Commit Graph

5094 Commits

Author SHA1 Message Date
Vladimir Barinov
2a3ee629ed arm64: dts: m3ulcb: Update memory node to 2 GiB map
This patch updates memory region:

  - After changes, the new map of the m3ulcb board on R8A7796 SoC
    Bank0: 1GiB RAM : 0x000048000000 -> 0x0007fffffff
    Bank1: 1GiB RAM : 0x000600000000 -> 0x0063fffffff

  - Before changes, the old map looked like this:
    Bank0: 1GiB RAM : 0x000048000000 -> 0x0007fffffff

Signed-off-by: Vladimir Barinov <vladimir.barinov+renesas@cogentembedded.com>
Tested-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-05-22 14:36:16 +02:00
Vladimir Barinov
82c906fac2 arm64: dts: m3ulcb: enable I2C
This supports I2C2 bus on M3ULCB board

Signed-off-by: Vladimir Barinov <vladimir.barinov+renesas@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-05-22 14:32:05 +02:00
Linus Torvalds
e47b40a235 arm64 2nd set of updates for 4.12:
- Silence module allocation failures when CONFIG_ARM*_MODULE_PLTS is
   enabled. This requires a check for __GFP_NOWARN in alloc_vmap_area()
 
 - Improve/sanitise user tagged pointers handling in the kernel
 
 - Inline asm fixes/cleanups
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZFJszAAoJEGvWsS0AyF7xASwQAKsY72jJMu+FbLqzn9vS7Frx
 AGlx+M20odn6htFBBEDhaJQxFTFSfuBUNb6z4WmRsVVcVZ722EHsvEFFkHU4naR1
 lAdZ1iFNHBRwGxV/JwCt08JwG0ipuqvcuNQH7XaYeuqldQLWaVTf4cangH4cZGX4
 Fcl54DI7Nfy6QYBnfkBSzi6Pqjhkdn6vh1JlNvkX40BwkT6Zt9WryXzvCwQha9A0
 EsstRhBECK6yCSaBcp7MbwyRbpB56PyOxUaeRUNoPaag+bSa8xs65JFq/yvolmpa
 Cm1Bt/hlVHvi3rgMIYnm+z1C4IVgLA1ouEKYAGdq4IpWA46BsPxwOBmmYG/0qLqH
 b7F5my5W8bFm9w1LI9I9l4FwoM1BU7b+n8KOZDZGpgfTwy86jIODhb42e7E4vEtn
 yHCwwu688zkxoI+JTt7PvY3Oue69zkP1/kXUWt5SILKH5LFyweZvdGc+VCSeQoGo
 fjwlnxI0l12vYIt2RnZWGJcA+W/T1E4cPJtIvvid9U9uuXs3Vv/EQ3F5wgaXoPN2
 UDyJTxwrv/iT2yMoZmaaVh36+6UDUPV+b2alA9Wq/3996axGlzeI3go+cdhQXj+E
 8JFzWph+kIZqCnGUaWMt/FTphFhOHjMxC36WEgxVRQZigXrajdrKAgvCj+7n2Qtm
 X0wL+XDgsWA8yPgt4WLK
 =WZ6G
 -----END PGP SIGNATURE-----

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull more arm64 updates from Catalin Marinas:

 - Silence module allocation failures when CONFIG_ARM*_MODULE_PLTS is
   enabled. This requires a check for __GFP_NOWARN in alloc_vmap_area()

 - Improve/sanitise user tagged pointers handling in the kernel

 - Inline asm fixes/cleanups

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Silence first allocation with CONFIG_ARM64_MODULE_PLTS=y
  ARM: Silence first allocation with CONFIG_ARM_MODULE_PLTS=y
  mm: Silence vmap() allocation failures based on caller gfp_flags
  arm64: uaccess: suppress spurious clang warning
  arm64: atomic_lse: match asm register sizes
  arm64: armv8_deprecated: ensure extension of addr
  arm64: uaccess: ensure extension of access_ok() addr
  arm64: ensure extension of smp_store_release value
  arm64: xchg: hazard against entire exchange variable
  arm64: documentation: document tagged pointer stack constraints
  arm64: entry: improve data abort handling of tagged pointers
  arm64: hw_breakpoint: fix watchpoint matching for tagged pointers
  arm64: traps: fix userspace cache maintenance emulation on a tagged pointer
2017-05-11 11:27:54 -07:00
Florian Fainelli
0c2cf6d948 arm64: Silence first allocation with CONFIG_ARM64_MODULE_PLTS=y
When CONFIG_ARM64_MODULE_PLTS is enabled, the first allocation using the
module space fails, because the module is too big, and then the module
allocation is attempted from vmalloc space. Silence the first allocation
failure in that case by setting __GFP_NOWARN.

Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-11 14:43:40 +01:00
Linus Torvalds
791a9a666d Kbuild UAPI header export updates for v4.12
Improvement of headers_install by Nicolas Dichtel.
 
 It has been long since the introduction of uapi directories,
 but the de-coupling of exported headers has not been completed.
 Headers listed in header-y are exported whether they exist in
 uapi directories or not.  His work fixes this inconsistency.
 
 All (and only) headers under uapi directories are now exported.
 The asm-generic wrappers are still exceptions, but this is a big
 step forward.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZE7MBAAoJED2LAQed4NsGroAP/iARejrIFmxuH96D5h2aiP1j
 c8KHQ+5fuq4w2KBmfbfkNvWbazlVheT6RrYWBUh/GABGsSqQC07d8New6B8TaUkE
 K0E48RsuYxouP18Ys6BOO4/zyRhEFD7Ta72PGQ/gDQY+6hAu4jYQnMdG0wipTblS
 QWgnUxTqfCbTjnRpRKXpcwRff+OeTWtOv3s0V8UashJUxnFVQ7Br2uRsm/KKkU/k
 jQC65KyHL4HlsFeeAiMmQ9IQPVwLsd6+d5crs0nydHaJ2XrFlNNQ7EEMyG8FxPdx
 9b/VpS+XY6DO+jeqkcpFrdL9IgcmCn72Qc5/4vrHuQO2dpWW5mVaVPq9RAGP0Yq/
 FB0vZRTp/tOIkD+0esirZW2gJtU3DWMY1A9rc5jjLRabdnRXVTdLfhEnksYJEfES
 yPbDEuKyzo6a+zBSqNtMquJPmYVYEDS2mcmgxY5sB58qtXkUN2Yr+uUALxC8XhXW
 SHHwIAV3a+UX5ZU9Ys8dp2hI4EXYXtdvsz2zvl4qPIn/Q9d1YoEJRe7/Y0p8gBXM
 5pVJ1yohKoYrNZVGBe0LO/gHGVAVgMj0cKn0Xg51bbvjxY2U5djUbMY0uw1gFrrM
 O9ld3C6O8zH5BsExCfwp9iPz2SW5W9N80kgnKfjCHBRUKuMTkm02DJf8Hx+pyfVQ
 DCy9lYTi76IgZ1uflKq9
 =Rqdo
 -----END PGP SIGNATURE-----

Merge tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild UAPI updates from Masahiro Yamada:
 "Improvement of headers_install by Nicolas Dichtel.

  It has been long since the introduction of uapi directories, but the
  de-coupling of exported headers has not been completed. Headers listed
  in header-y are exported whether they exist in uapi directories or
  not. His work fixes this inconsistency.

  All (and only) headers under uapi directories are now exported. The
  asm-generic wrappers are still exceptions, but this is a big step
  forward"

* tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  arch/include: remove empty Kbuild files
  uapi: export all arch specifics directories
  uapi: export all headers under uapi directories
  smc_diag.h: fix include from userland
  btrfs_tree.h: fix include from userland
  uapi: includes linux/types.h before exporting files
  Makefile.headersinst: remove destination-y option
  Makefile.headersinst: cleanup input files
  x86: stop exporting msr-index.h to userland
  nios2: put setup.h in uapi
  h8300: put bitsperlong.h in uapi
2017-05-10 20:45:36 -07:00
Linus Torvalds
23ea3f62f3 Kbuild misc updates for 4.12
- Clean up builddeb script
 
 - Use full path for KBUILD_IMAGE to fix rpm-pkg build
 
 - Fix objdiff tool to ignore debug info
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZE6tOAAoJED2LAQed4NsG2o4P/ii2YuHMrxUh5J6KbC1ilLLC
 aGcapg+CQ+pFqMeVIbofaEdJI/+vofajG8Eh5vVr8R4Hj3i7PA+2AFgg3cNe2hFE
 OSHJbb3YTkYJJzG+s+BynF1dla03Yyo/sOHoV4yRst/hiEJHpLlOJgieIM9bv8pq
 1DjBseHSrPGqUtvBuLoNwCbylhgyHiL5FycH//dpVbpNpoiy+HzSrcmXgT+rtbwJ
 qPEdf5QqapM0T83uxaYDko6VRYBIHOu9kQnVMUKS9+Qsqxm0NzO7Q8fFMdZpA8QY
 HCTFCQszeJid4VZO7VqKVCV40g3KGdAuCPPW7lZZO0H/AVEVqUv9PWOnuPCiyhJc
 ZXX7fmehvToHC0lbpC4GCHEQ9VxKF3KiNJUusDkFm63oSmvoaiRR2GGzWidpQ0eq
 l/lWB2/YygCQjs+kucDLhdIQjW89lkIBehXtZ28gkRYiLCbvQBpINHXrvZ/ai5uO
 hJ8hVyWnCkghm7alQDCktohMgRmcgUMPTByYcfbQG03vYBVITS9FBzvfSJgmRksQ
 DhPLakWq2Wlsx7DjjedELmO4JFn17oyi3av71lgiN5FjW9TBLxq3XmeHKu+avjEk
 LHisT5lCzh0YjyEhfSSkBtz2iyDBZhNUJKmw1Tf89owbKUMPnlxGjZtbmvQkv/qk
 5GdCH7YJG+XchdlDi70b
 =vptn
 -----END PGP SIGNATURE-----

Merge tag 'kbuild-misc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull misc Kbuild updates from Masahiro Yamada:

 - clean up builddeb script

 - use full path for KBUILD_IMAGE to fix rpm-pkg build

 - fix objdiff tool to ignore debug info

* tag 'kbuild-misc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  builddeb: fix typo
  builddeb: Update a few outdated and hardcoded strings
  deb-pkg: Remove the KBUILD_IMAGE workaround
  unicore32: Use full path in KBUILD_IMAGE definition
  sh: Use full path in KBUILD_IMAGE definition
  arc: Use full path in KBUILD_IMAGE definition
  arm: Use full path in KBUILD_IMAGE definition
  arm64: Use full path in KBUILD_IMAGE definition
  scripts: objdiff: Ignore debug info when comparing
2017-05-10 20:41:43 -07:00
Linus Torvalds
5ccd414080 Second round of KVM Changes for v4.12:
* ARM: bugfixes; moved shared 32-bit/64-bit files to virt/kvm/arm;
 support for saving/restoring virtual ITS state to userspace
 
 * PPC: XIVE (eXternal Interrupt Virtualization Engine) support
 
 * x86: nVMX improvements, including emulated page modification logging
 (PML) which brings nice performance improvements on some workloads
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJZEeusAAoJEL/70l94x66Dq+cH/RkL9znP717k7Z0jS8/FJN9q
 wKU8j0jRxuqjnvEu89redfFKxElWM9T1fwReBObjWct9+hyJ9Pbpf95Lr9ca39PR
 zhiBMKl79he0gHV/z48ItuzH1mOrU/KzFfxHYLlBd4oGw0ZdUttWAsUtaWQ8UNFo
 xtyu2R+CWYLeAUBrpYmkvrOjhnB+S9+f4y2OY9pXsMg4HN9/Tdn0B656yTOWdu9C
 onO3QQXNY/dzGFLH3tA/kAbz25x4Y+pP2UHlMm5vkW8XWPn+lluUwtBonTKdzy64
 RDWWUWcs0k37ps4H9b56oXmz8ZFZ0FQF3MimDQueGHSYOXCxU5EqmC9c7KZmZrg=
 =KcCv
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull more KVM updates from Paolo Bonzini:
 "ARM:
   - bugfixes
   - moved shared 32-bit/64-bit files to virt/kvm/arm
   - support for saving/restoring virtual ITS state to userspace

  PPC:
   - XIVE (eXternal Interrupt Virtualization Engine) support

  x86:
   - nVMX improvements, including emulated page modification logging
     (PML) which brings nice performance improvements on some workloads"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (45 commits)
  KVM: arm/arm64: vgic-its: Cleanup after failed ITT restore
  KVM: arm/arm64: Don't call map_resources when restoring ITS tables
  KVM: arm/arm64: Register ITS iodev when setting base address
  KVM: arm/arm64: Get rid of its->initialized field
  KVM: arm/arm64: Register iodevs when setting redist base and creating VCPUs
  KVM: arm/arm64: Slightly rework kvm_vgic_addr
  KVM: arm/arm64: Make vgic_v3_check_base more broadly usable
  KVM: arm/arm64: Refactor vgic_register_redist_iodevs
  KVM: Add kvm_vcpu_get_idx to get vcpu index in kvm->vcpus
  nVMX: Advertise PML to L1 hypervisor
  nVMX: Implement emulated Page Modification Logging
  kvm: x86: Add a hook for arch specific dirty logging emulation
  kvm: nVMX: Validate CR3 target count on nested VM-entry
  KVM: set no_llseek in stat_fops_per_vm
  KVM: arm/arm64: vgic: Rename kvm_vgic_vcpu_init to kvm_vgic_vcpu_enable
  KVM: arm/arm64: Clarification and relaxation to ITS save/restore ABI
  KVM: arm64: vgic-v3: KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES
  KVM: arm64: vgic-its: Fix pending table sync
  KVM: arm64: vgic-its: ITT save and restore
  KVM: arm64: vgic-its: Device table save/restore
  ...
2017-05-10 11:29:23 -07:00
Linus Torvalds
a2d9214c73 TEE driver infrastructure and OP-TEE drivers
This branch introduces a generic TEE framework in the kernel, to handle
 trusted environemtns (security coprocessor or software implementations
 such as OP-TEE/TrustZone). I'm sending it separately from the other
 arm-soc driver changes to give it a little more visibility, once
 the subsystem is merged, we will likely keep this in the arm₋soc
 drivers branch or have the maintainers submit pull requests directly,
 depending on the patch volume.
 
 I have reviewed earlier versions in the past, and have reviewed
 the latest version in person during Linaro Connect BUD17.
 
 Here is my overall assessment of the subsystem:
 
 * There is clearly demand for this, both for the generic
   infrastructure and the specific OP-TEE implementation.
 
 * The code has gone through a large number of reviews,
   and the review comments have all been addressed, but
   the reviews were not coming up with serious issues any more
   and nobody volunteered to vouch for the quality.
 
 * The user space ioctl interface is sufficient to work with the
   OP-TEE driver, and it should in principle work with other
   TEE implementations that follow the GlobalPlatform[1] standards,
   but it might need to be extended in minor ways depending on
   specific requirements of future TEE implementations
 
 * The main downside of the API to me is how the user space
   is tied to the TEE implementation in hardware or firmware,
   but uses a generic way to communicate with it. This seems
   to be an inherent problem with what it is trying to do,
   and I could not come up with any better solution than what
   is implemented here.
 
 For a detailed history of the patch series, see
 https://lkml.org/lkml/2017/3/10/1277
 
 Conflicts: needs a fixup after the drm tree was merged, see
 https://patchwork.kernel.org/patch/9691679/
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIVAwUAWRIRzWCrR//JCVInAQLKUhAAiJaBqb4uv5wDWKw8MVV5BbFjq6po/eMK
 r3lgwyBGoRnrYiXo0z2eYNqpHsmNIGrL21qYMzaBGhVeaOOVPZT4q3zH+Se9Oo+J
 HHZZ4J6Q9kDIUy9WkM7ybHVj3C0kQIn7H+/6zi2L97tMQJMZHI0jCSgDa6XPqHzh
 G/vqVx5jlaFj6SvkLR0L0yWTe0wXTHoyObSCWsM/nV8AiTNhMD3kcTEOm0XHcAJB
 k8ei/Pw2INOFZu1B0xpoRkWoAo6YKMcxQp9kiMkcEhChPIkNK+8+npYJ3fiogsii
 BVTXC9Km2jmUfQ21Pegd2XbqzNGU1rJSdHGTyK2Oax+0J+C8xElGMs8U9tqXPqun
 fWkSp0dl7Sk0f9Yhc8JBD1Tsbuo0H+TsMtQ6RNvlxLiNHE/5/bZBCeylvtoUyI+m
 NcvP0x5QeBmkitz7zhYpjaSv5HjZG3PPO3pfaz0Stmen5ZM8DWB1TaS1Nn9MigHt
 RGXlafc6dKybQQBLWDwStv7IkqDRYte+7pwmx+QFCRWj8+uFtTCDPLyaDUTwlErL
 n4ztUL1RWiq48S+yJDJURM4mLpEMnJFFF4tiiHH8eUe2JE+CXwGxkT6BG62W71Oy
 RosiJ84LmdoHRyHx6xmqpoDcL1WG57IgWt05SRUkQatA/ealGX88gguGEAWsPL0h
 cnKPYkiYfug=
 =VzpB
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-tee' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull TEE driver infrastructure and OP-TEE drivers from Arnd Bergmann:
 "This introduces a generic TEE framework in the kernel, to handle
  trusted environemtns (security coprocessor or software implementations
  such as OP-TEE/TrustZone). I'm sending it separately from the other
  arm-soc driver changes to give it a little more visibility, once the
  subsystem is merged, we will likely keep this in the arm₋soc drivers
  branch or have the maintainers submit pull requests directly,
  depending on the patch volume.

  I have reviewed earlier versions in the past, and have reviewed the
  latest version in person during Linaro Connect BUD17.

  Here is my overall assessment of the subsystem:

   - There is clearly demand for this, both for the generic
     infrastructure and the specific OP-TEE implementation.

   - The code has gone through a large number of reviews, and the review
     comments have all been addressed, but the reviews were not coming
     up with serious issues any more and nobody volunteered to vouch for
     the quality.

   - The user space ioctl interface is sufficient to work with the
     OP-TEE driver, and it should in principle work with other TEE
     implementations that follow the GlobalPlatform[1] standards, but it
     might need to be extended in minor ways depending on specific
     requirements of future TEE implementations

   - The main downside of the API to me is how the user space is tied to
     the TEE implementation in hardware or firmware, but uses a generic
     way to communicate with it. This seems to be an inherent problem
     with what it is trying to do, and I could not come up with any
     better solution than what is implemented here.

  For a detailed history of the patch series, see

    https://lkml.org/lkml/2017/3/10/1277"

* tag 'armsoc-tee' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: dt: hikey: Add optee node
  Documentation: tee subsystem and op-tee driver
  tee: add OP-TEE driver
  tee: generic TEE subsystem
  dt/bindings: add bindings for optee
2017-05-10 11:20:09 -07:00
Nicolas Dichtel
fcc8487d47 uapi: export all headers under uapi directories
Regularly, when a new header is created in include/uapi/, the developer
forgets to add it in the corresponding Kbuild file. This error is usually
detected after the release is out.

In fact, all headers under uapi directories should be exported, thus it's
useless to have an exhaustive list.

After this patch, the following files, which were not exported, are now
exported (with make headers_install_all):
asm-arc/kvm_para.h
asm-arc/ucontext.h
asm-blackfin/shmparam.h
asm-blackfin/ucontext.h
asm-c6x/shmparam.h
asm-c6x/ucontext.h
asm-cris/kvm_para.h
asm-h8300/shmparam.h
asm-h8300/ucontext.h
asm-hexagon/shmparam.h
asm-m32r/kvm_para.h
asm-m68k/kvm_para.h
asm-m68k/shmparam.h
asm-metag/kvm_para.h
asm-metag/shmparam.h
asm-metag/ucontext.h
asm-mips/hwcap.h
asm-mips/reg.h
asm-mips/ucontext.h
asm-nios2/kvm_para.h
asm-nios2/ucontext.h
asm-openrisc/shmparam.h
asm-parisc/kvm_para.h
asm-powerpc/perf_regs.h
asm-sh/kvm_para.h
asm-sh/ucontext.h
asm-tile/shmparam.h
asm-unicore32/shmparam.h
asm-unicore32/ucontext.h
asm-x86/hwcap2.h
asm-xtensa/kvm_para.h
drm/armada_drm.h
drm/etnaviv_drm.h
drm/vgem_drm.h
linux/aspeed-lpc-ctrl.h
linux/auto_dev-ioctl.h
linux/bcache.h
linux/btrfs_tree.h
linux/can/vxcan.h
linux/cifs/cifs_mount.h
linux/coresight-stm.h
linux/cryptouser.h
linux/fsmap.h
linux/genwqe/genwqe_card.h
linux/hash_info.h
linux/kcm.h
linux/kcov.h
linux/kfd_ioctl.h
linux/lightnvm.h
linux/module.h
linux/nbd-netlink.h
linux/nilfs2_api.h
linux/nilfs2_ondisk.h
linux/nsfs.h
linux/pr.h
linux/qrtr.h
linux/rpmsg.h
linux/sched/types.h
linux/sed-opal.h
linux/smc.h
linux/smc_diag.h
linux/stm.h
linux/switchtec_ioctl.h
linux/vfio_ccw.h
linux/wil6210_uapi.h
rdma/bnxt_re-abi.h

Note that I have removed from this list the files which are generated in every
exported directories (like .install or .install.cmd).

Thanks to Julien Floret <julien.floret@6wind.com> for the tip to get all
subdirs with a pure makefile command.

For the record, note that exported files for asm directories are a mix of
files listed by:
 - include/uapi/asm-generic/Kbuild.asm;
 - arch/<arch>/include/uapi/asm/Kbuild;
 - arch/<arch>/include/asm/Kbuild.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Mark Salter <msalter@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-05-11 00:21:54 +09:00
Linus Torvalds
28b47809b2 IOMMU Updates for Linux v4.12
This includes:
 
 	* Some code optimizations for the Intel VT-d driver
 
 	* Code to switch off a previously enabled Intel IOMMU
 
 	* Support for 'struct iommu_device' for OMAP, Rockchip and
 	  Mediatek IOMMUs
 
 	* Some header optimizations for IOMMU core code headers and a
 	  few fixes that became necessary in other parts of the kernel
 	  because of that
 
 	* ACPI/IORT updates and fixes
 
 	* Some Exynos IOMMU optimizations
 
 	* Code updates for the IOMMU dma-api code to bring it closer to
 	  use per-cpu iova caches
 
 	* New command-line option to set default domain type allocated
 	  by the iommu core code
 
 	* Another command line option to allow the Intel IOMMU switched
 	  off in a tboot environment
 
 	* ARM/SMMU: TLB sync optimisations for SMMUv2, Support for using
 	  an IDENTITY domain in conjunction with DMA ops, Support for
 	  SMR masking, Support for 16-bit ASIDs (was previously broken)
 
 	* Various other small fixes and improvements
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABAgAGBQJZEY4XAAoJECvwRC2XARrjth0QAKV56zjnFclv39aDo6eCq9CT
 51+XT4bPY5VKQ2+Jx76TBNObHmGK+8KEMHfT9khpWJtFCDyy25SGckLry1nYqmZs
 tSTsbj4sOeCyKzOLITlRN9/OzKXkjKAxYuq+sQZZFDFYf3kCM/eag0dGAU6aVLNp
 tkIal3CSpGjCQ9M5JohrtQ1mwiGqCIkMIgvnBjRw+bfpLnQNG+VL6VU2G3RAkV2b
 5Vbdoy+P7ZQnJSZr/bibYL2BaQs2diR4gOppT5YbsfniMq4QYSjheu1xBboGX8b7
 sx8yuPi4370irSan0BDvlvdQdjBKIRiDjfGEKDhRwPhtvN6JREGakhEOC8MySQ37
 mP96B72Lmd+a7DEl5udOL7tQILA0DcUCX0aOyF714khnZuFU5tVlCotb/36xeJ+T
 FPc3RbEVQ90m8dYU6MNJ+ahtb/ZapxGTRfisIigB6wlnZa0Evabp9EJSce6oJMkm
 whbBhDubeEU18n9XAaofMbu+P2LAzq8cxiRMlsDvT4mIy7jO86jjCmhpu1Tfn2GY
 4wrEQZdWOMvhUsIhObXA0aC3BzC506uvnKPW3qy041RaxBuelWiBi29qzYbhxzkr
 DLDpWbUZNYPyFJjttpavyQb2/XRduBTJdVP1pQpkJNDsW5jLiBkpSqm9xNADapRY
 vLSYRX0JCIquaD+PAuxn
 =3aE8
 -----END PGP SIGNATURE-----

Merge tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:

 - code optimizations for the Intel VT-d driver

 - ability to switch off a previously enabled Intel IOMMU

 - support for 'struct iommu_device' for OMAP, Rockchip and Mediatek
   IOMMUs

 - header optimizations for IOMMU core code headers and a few fixes that
   became necessary in other parts of the kernel because of that

 - ACPI/IORT updates and fixes

 - Exynos IOMMU optimizations

 - updates for the IOMMU dma-api code to bring it closer to use per-cpu
   iova caches

 - new command-line option to set default domain type allocated by the
   iommu core code

 - another command line option to allow the Intel IOMMU switched off in
   a tboot environment

 - ARM/SMMU: TLB sync optimisations for SMMUv2, Support for using an
   IDENTITY domain in conjunction with DMA ops, Support for SMR masking,
   Support for 16-bit ASIDs (was previously broken)

 - various other small fixes and improvements

* tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (63 commits)
  soc/qbman: Move dma-mapping.h include to qman_priv.h
  soc/qbman: Fix implicit header dependency now causing build fails
  iommu: Remove trace-events include from iommu.h
  iommu: Remove pci.h include from trace/events/iommu.h
  arm: dma-mapping: Don't override dma_ops in arch_setup_dma_ops()
  ACPI/IORT: Fix CONFIG_IOMMU_API dependency
  iommu/vt-d: Don't print the failure message when booting non-kdump kernel
  iommu: Move report_iommu_fault() to iommu.c
  iommu: Include device.h in iommu.h
  x86, iommu/vt-d: Add an option to disable Intel IOMMU force on
  iommu/arm-smmu: Return IOVA in iova_to_phys when SMMU is bypassed
  iommu/arm-smmu: Correct sid to mask
  iommu/amd: Fix incorrect error handling in amd_iommu_bind_pasid()
  iommu: Make iommu_bus_notifier return NOTIFY_DONE rather than error code
  omap3isp: Remove iommu_group related code
  iommu/omap: Add iommu-group support
  iommu/omap: Make use of 'struct iommu_device'
  iommu/omap: Store iommu_dev pointer in arch_data
  iommu/omap: Move data structures to omap-iommu.h
  iommu/omap: Drop legacy-style device support
  ...
2017-05-09 15:15:47 -07:00
Linus Torvalds
c6778ff813 ARM: 64-bit DT updates
Device-tree updates for arm64 platforms. Just as with 32-bit, a bunch of smaller
 changes, but also some new platforms that are worth mentioning:
 
  * Rockchip RK3399 platforms for Chromebooks, including Samsung Chromebook
    Plus (Kevin)
  * Orange Pi PC2 (Allwinner H5)
  * Freescale LS2088A and LS1088A SoCs
  * Expanded support for Nvidia Tegra186 (and Jetson TX2)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZEA5TAAoJEIwa5zzehBx3uPwP/3NBPKvsDQha/x+PPgtSM1cM
 pUEF1fxsLftrt+pUeRgMZqGE2xu5vVUKEQsr7KDdWMS9LMs50Pp9dTvfxr7A4Asm
 WRRMR7Y3gPbr49uf4+JLLmn0hYXTeaoUftVneBj0qU9Flwe3mQDVULiRjPalWYVB
 g0+NwkPE2lrqrudceA2HiVEXqNlVXCIh2mdMaC7Luo0VEsz7nRHT0TOGPaxnXB3M
 NoJ56FPHtv3x9+C56B5CLJ/+Ya8SLgfqVwwoK8FgoqDzEF3nbhf/WCUyph+gHdP3
 D+jMk7t0tvIW8Ne4TGXenoxBznZxgh5ObpLlKBKPCGJkKxpfuq9koH33MmY/WoUN
 7uh3F3HI2sGr7tY/xaN8H7a9A4mHzipj8nqaAsjAJppIpioecGCFVtkY5q0jfxLC
 aAc1o4zoimdPs9q9mu/qhgKNxWkoTYnwvtWHuwqEOggvSb1ulS1SPS24VkKrc4LI
 XMGbA4mQOuFwZyG4FVfvWzbnhsHzDh4cgHaVGra6z5zoX1MUrvieCWEji+Ul1VWa
 lUJ2sTilvSGkwjGcMUSki5p9GcU8dPXwqKiZqDuGx6Ps4aQsw0vz286BnBeVsusG
 qLRH4nkqbF9xCEz9h71mcU6WMu17EsG9zMoCg5K4EZ+RIG3cgWq0dMWW1LqtRn7S
 2YqayY3+UEyMPN146R1V
 =q3Ix
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM 64-bit DT updates from Olof Johansson:
 "Device-tree updates for arm64 platforms. Just as with 32-bit, a bunch
  of smaller changes, but also some new platforms that are worth
  mentioning:

   - Rockchip RK3399 platforms for Chromebooks, including Samsung
     Chromebook Plus (Kevin)

   - Orange Pi PC2 (Allwinner H5)

   - Freescale LS2088A and LS1088A SoCs

   - Expanded support for Nvidia Tegra186 (and Jetson TX2)"

* tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (180 commits)
  arm64: dts: Add basic DT to support Spreadtrum's SP9860G
  arm64: dts: exynos: Use - instead of @ for DT OPP entries
  arm64: dts: exynos: Add support for s6e3hf2 panel device on TM2e board
  arm64: dts: juno: add information about L1 and L2 caches
  arm64: dts: juno: fix few unit address format warnings
  arm64: marvell: dts: enable the crypto engine on the Armada 8040 DB
  arm64: marvell: dts: enable the crypto engine on the Armada 7040 DB
  arm64: marvell: dts: add crypto engine description for 7k/8k
  arm64: dts: marvell: add sdhci support for Armada 7K/8K
  arm64: dts: marvell: add eMMC support for Armada 37xx
  arm64: dts: hisi: add pinctrl dtsi file for HiKey960 development board
  arm64: dts: hisi: add drive strength levels of the pins for Hi3660 SoC
  arm64: dts: hisi: enable the NIC and SAS for the hip07-d05 board
  arm64: dts: hisi: add SAS nodes for the hip07 SoC
  arm64: dts: hisi: add RoCE nodes for the hip07 SoC
  arm64: dts: hisi: add network related nodes for the hip07 SoC
  arm64: dts: hisi: add mbigen nodes for the hip07 SoC
  arm64: dts: rockchip: fix the memory size of PX5 Evaluation board
  arm64: dts: hisilicon: add dts files for hi3798cv200-poplar board
  dt-bindings: arm: hisilicon: add bindings for hi3798cv200 SoC and Poplar board
  ...
2017-05-09 10:07:33 -07:00
Linus Torvalds
0ff4c01b27 ARM: SoC 64-bit changes
Changes to platform code for 64-bit ARM platforms.
 
 Most of these are small changes to the one defconfig we use on arm64
 (no per-platform configs there), to enable new drivers.
 
 There are also a few other changes. Broadcom sold off their 'Vulcan'
 design to Cavium, where it is now called ThunderX2. While we normally
 don't rename stuff based on marketing's whims, it seemed appropriate to
 bring in renames on a few things such as MAINTAINERS, etc.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZEAyiAAoJEIwa5zzehBx3OlUQAI24Ofhr3VWeQhGWBpN/+Jx0
 0IjBTPGSs8ugTFfLsJP6sBxK4d66tJSMtoD1486IK3gR9/mugL9suoYm+tME9ggN
 UE7DUK674QV9lE3WvLD/faL2/6a0VghuRBs7Lf6kWK+s/di+Wb5ewC0fC4AtkNiH
 nep4ah1RMJLHgTSLph1VMvncOlnIs1fak337zm3QtOvjnYKTqpv4yc2/uZUkB0EY
 eZJlVUCgHlJNVlu9lg2VhGwUUNGG+ho2npm0mXiADDUt3PzqQUzI7PvJD7FQhCyk
 XL0leYt/ySceNBoBXR6iuAcOlb9b2Sh6o4cOcItILl14yf6cig8lOxOi8JJOxI7m
 s4iCwX8U5R1q55wuke+Li/oXhbjsj4B/gWZIGwJSKYaTvag/MpO+cbTL7E5IVj17
 QyQ3r60BHxt783/Q+Z4iBqdomC9WlLa9Y9q+z+zXXvZxdBCsJIDyD1aTyG17R2ur
 D1DlWk/zd7AbuVjn5maM2pWGcMeI6vw2ixdt3xyVUaH5+6sXGb4JL1EwnJ63octH
 6oboY/iKzr4lTOQrjH3Sif2myo3FXgNgAxGZJSY5Z7Z/e/Vq7FXtfHJCZRz10OuO
 YUCx9ExGB/RYJJqEU7MLYu7NmwXCt4ymtoslRSeOqSH7fuZVroHtDVqpSEu01Fqw
 vStyAVScUusu5Okr43bP
 =NJ8c
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC 64-bit changes from Olof Johansson:
 "Changes to platform code for 64-bit ARM platforms.

  Most of these are small changes to the one defconfig we use on arm64
  (no per-platform configs there), to enable new drivers.

  There are also a few other changes. Broadcom sold off their 'Vulcan'
  design to Cavium, where it is now called ThunderX2. While we normally
  don't rename stuff based on marketing's whims, it seemed appropriate
  to bring in renames on a few things such as MAINTAINERS, etc"

* tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: sunxi: always enable reset controller
  arm64: defconfig: enable the Safexcel crypto engine as a module
  arm64: configs: enable SDHCI driver for Xenon
  MAINTAINERS: Broadcom Vulcan is now Cavium ThunderX2
  arm64: defconfig: add Allwinner USB PHY
  arm64: defconfig: enable MVPP2
  arm64: defconfig: Enable video, DRM and LPASS drivers for Exynos5433 and Exynos7
  arm64: exynos: Enable Exynos PMU and PM domains drivers
  arm64: only select PINCTRL for Allwinner platforms
  arm64: set CONFIG_MMC_BCM2835=y in defconfig
  arm64: defconfig: enable I2C_PXA
  arm64: defconfig: enable MVNETA
  ARM64: defconfig: enable the leds-pwm driver and default-on trigger
  arm64: defconfig: Enable SH Mobile I2C controller
2017-05-09 10:04:17 -07:00
Linus Torvalds
85d604902e ARM: Device-tree updates
Device-tree continues to see lots of updates. The majority of patches
 here are smaller changes for new hardware on existing platforms, and
 there are a few larger changes worth pointing out.
 
 Major new platforms:
 
  - Gemini has been ported to DT, so a handful of "new" platforms moved over
    from board files
  - Rockchip RK3288 support for Tinkerboard and Phytec phyCORE-RK3288 SoM and RDK
  - A bunch of embedded platforms, several Linksys platforms, Synology DS116,
  - Motorola Droid4 (really old OMAP-based phone) support is added.
 
 Some refactorings, i.e. Allwinner H3/H5 support is commonalized.
 
 And lots of smaller changes, cleanups, etc. See shortlog for more description
 
 We're adding ability to cross-include DT files between arm and arm64,
 by creating appropriate links in the dt-include directory, and using arm/
 and arm64/ as include prefixes. This will avoid other local hacks such as
 per-file links between the two arch trees (this broke for external mirroring
 of DT contents). Now they can just provide their own appropriate dt-include
 hierarcy per platform.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZEAoxAAoJEIwa5zzehBx3li8P/iIMy0HmGuJ0JsTldMk4kgkM
 1Ci/gcgKYn43m68RwvZCwkBxVibqCdMbBtLHCUt3ScGIYdj6mUG8axRHvFW/tsGf
 BP0Y5pxm7l1BlHOKed97bJUeMyqqG13szzS7aB5L6cyZt41lAAkpCx4OFAuIlaxo
 XM1v2xRSxqSf/zp4px83qX2hdHIpe4ZGlDiNh8rCBBnKMY4PqhK0V7TFLPOKbFnr
 stIvD1TpvzacN67JVo1En0rCFgXSCwJ+CTumAOIx4tflV48ymY5THRNtI1ogFosc
 1IfOxnC9DyRVM2ubFF7/ZLFbmn5KHu6ZwPLN+8Wl2McbT96PAtJ3h/zgTnuk4Tvf
 GaAfqcyAXFeiZGU+bkkGiaQwXRDBroxVuNFTgERNgF70GUrDpBzd3tJO2rx7oZCS
 Rj2QvKfBDBr9g5ldVGjOBIq/G9DeN5TtR6gyr/hCS/nm0NlYQ90Pzing0Nj8PDC9
 /AOa4k4wUWo/oaFucBEeATCxto3TKpmBuP1I31sWG8StKVSJbIek2dSMcWSVFrG5
 6/pzmuE4C7ZlshcFAUOeHxMVjBhTya5mDZQgZhCAnwhVMzrrpMTHTi27nbWcv/k8
 9TH+ig5DoKL65FFE92ZkEb4S47SaD2+qKjEzJMDNQzc5WuY4l7pfDQoSn3YLjzKZ
 xSKQEsmyOW0/0v8ecDKP
 =v6w6
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM Device-tree updates from Olof Johansson:
 "Device-tree continues to see lots of updates. The majority of patches
  here are smaller changes for new hardware on existing platforms, and
  there are a few larger changes worth pointing out.

  Major new platforms:

   - Gemini has been ported to DT, so a handful of "new" platforms moved
     over from board files

   - Rockchip RK3288 support for Tinkerboard and Phytec phyCORE-RK3288
     SoM and RDK

   - A bunch of embedded platforms, several Linksys platforms, Synology
     DS116,

   - Motorola Droid4 (really old OMAP-based phone) support is added.

  Some refactorings, i.e. Allwinner H3/H5 support is commonalized.

  And lots of smaller changes, cleanups, etc. See shortlog for more
  description

  We're adding ability to cross-include DT files between arm and arm64,
  by creating appropriate links in the dt-include directory, and using
  arm/ and arm64/ as include prefixes. This will avoid other local hacks
  such as per-file links between the two arch trees (this broke for
  external mirroring of DT contents). Now they can just provide their
  own appropriate dt-include hierarcy per platform"

* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (349 commits)
  ARM: dts: exynos: Use - instead of @ for DT OPP entries
  arm: spear6xx: add DT description of the ADC on SPEAr600
  arm: spear6xx: remove unneeded pinctrl properties in spear600-evb
  arm: spear6xx: switch spear600-evb to the new flash partition DT binding
  arm: spear6xx: fix spaces in spear600-evb.dts
  arm: spear6xx: use node labels in spear600-evb.dts
  arm: spear6xx: add labels to various nodes in spear600.dtsi
  ARM: dts: vexpress: fix few unit address format warnings
  ARM: dts: at91: sama5d3_xplained: not all ADC channels are available
  ARM: dts: at91: sama5d3_xplained: fix ADC vref
  ARM: dts: at91: add envelope detector mux to the Axentia TSE-850
  ARM: dts: armada-38x: label USB and SATA nodes
  ARM: dts: imx6q-utilite-pro: add hpd gpio
  ARM: dts: imx6qp-sabresd: Set reg_arm regulator supply
  ARM: dts: imx6qdl-sabresd: Set LDO regulator supply
  ARM: dts: imx: add Gateworks Ventana GW5903 support
  ARM: dts: i.MX25: add AIPS control registers
  ARM: dts: imx7-colibri: add Carrier Board 3.3V/5V regulators
  ARM: dts: imx7-colibri: remove 1.8V fixed regulator
  ARM: dts: imx7-colibri: allow to disable Ethernet rail
  ...
2017-05-09 09:54:39 -07:00
Mark Rutland
d135b8b506 arm64: uaccess: suppress spurious clang warning
Clang tries to warn when there's a mismatch between an operand's size,
and the size of the register it is held in, as this may indicate a bug.
Specifically, clang warns when the operand's type is less than 64 bits
wide, and the register is used unqualified (i.e. %N rather than %xN or
%wN).

Unfortunately clang can generate these warnings for unreachable code.
For example, for code like:

do {                                            \
        typeof(*(ptr)) __v = (v);               \
        switch(sizeof(*(ptr))) {                \
        case 1:                                 \
                // assume __v is 1 byte wide    \
                asm ("{op}b %w0" : : "r" (v));  \
                break;                          \
        case 8:                                 \
                // assume __v is 8 bytes wide   \
                asm ("{op} %0" : : "r" (v));    \
                break;                          \
        }
while (0)

... if op() were passed a char value and pointer to char, clang may
produce a warning for the unreachable case where sizeof(*(ptr)) is 8.

For the same reasons, clang produces warnings when __put_user_err() is
used for types that are less than 64 bits wide.

We could avoid this with a cast to a fixed-width type in each of the
cases. However, GCC will then warn that pointer types are being cast to
mismatched integer sizes (in unreachable paths).

Another option would be to use the same union trickery as we do for
__smp_store_release() and __smp_load_acquire(), but this is fairly
invasive.

Instead, this patch suppresses the clang warning by using an x modifier
in the assembly for the 8 byte case of __put_user_err(). No additional
work is necessary as the value has been cast to typeof(*(ptr)), so the
compiler will have performed any necessary extension for the reachable
case.

For consistency, __get_user_err() is also updated to use the x modifier
for its 8 byte case.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:47:27 +01:00
Mark Rutland
8997c93452 arm64: atomic_lse: match asm register sizes
The LSE atomic code uses asm register variables to ensure that
parameters are allocated in specific registers. In the majority of cases
we specifically ask for an x register when using 64-bit values, but in a
couple of cases we use a w regsiter for a 64-bit value.

For asm register variables, the compiler only cares about the register
index, with wN and xN having the same meaning. The compiler determines
the register size to use based on the type of the variable. Thus, this
inconsistency is merely confusing, and not harmful to code generation.

For consistency, this patch updates those cases to use the x register
alias. There should be no functional change as a result of this patch.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:47:17 +01:00
Mark Rutland
55de49f9aa arm64: armv8_deprecated: ensure extension of addr
Our compat swp emulation holds the compat user address in an unsigned
int, which it passes to __user_swpX_asm(). When a 32-bit value is passed
in a register, the upper 32 bits of the register are unknown, and we
must extend the value to 64 bits before we can use it as a base address.

This patch casts the address to unsigned long to ensure it has been
suitably extended, avoiding the potential issue, and silencing a related
warning from clang.

Fixes: bd35a4adc4 ("arm64: Port SWP/SWPB emulation support from arm")
Cc: <stable@vger.kernel.org> # 3.19.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:47:05 +01:00
Mark Rutland
a06040d7a7 arm64: uaccess: ensure extension of access_ok() addr
Our access_ok() simply hands its arguments over to __range_ok(), which
implicitly assummes that the addr parameter is 64 bits wide. This isn't
necessarily true for compat code, which might pass down a 32-bit address
parameter.

In these cases, we don't have a guarantee that the address has been zero
extended to 64 bits, and the upper bits of the register may contain
unknown values, potentially resulting in a suprious failure.

Avoid this by explicitly casting the addr parameter to an unsigned long
(as is done on other architectures), ensuring that the parameter is
widened appropriately.

Fixes: 0aea86a217 ("arm64: User access library functions")
Cc: <stable@vger.kernel.org> # 3.7.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:46:51 +01:00
Mark Rutland
994870bead arm64: ensure extension of smp_store_release value
When an inline assembly operand's type is narrower than the register it
is allocated to, the least significant bits of the register (up to the
operand type's width) are valid, and any other bits are permitted to
contain any arbitrary value. This aligns with the AAPCS64 parameter
passing rules.

Our __smp_store_release() implementation does not account for this, and
implicitly assumes that operands have been zero-extended to the width of
the type being stored to. Thus, we may store unknown values to memory
when the value type is narrower than the pointer type (e.g. when storing
a char to a long).

This patch fixes the issue by casting the value operand to the same
width as the pointer operand in all cases, which ensures that the value
is zero-extended as we expect. We use the same union trickery as
__smp_load_acquire and {READ,WRITE}_ONCE() to avoid GCC complaining that
pointers are potentially cast to narrower width integers in unreachable
paths.

A whitespace issue at the top of __smp_store_release() is also
corrected.

No changes are necessary for __smp_load_acquire(). Load instructions
implicitly clear any upper bits of the register, and the compiler will
only consider the least significant bits of the register as valid
regardless.

Fixes: 47933ad41a ("arch: Introduce smp_load_acquire(), smp_store_release()")
Fixes: 878a84d5a8 ("arm64: add missing data types in smp_load_acquire/smp_store_release")
Cc: <stable@vger.kernel.org> # 3.14.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:45:04 +01:00
Mark Rutland
fee960bed5 arm64: xchg: hazard against entire exchange variable
The inline assembly in __XCHG_CASE() uses a +Q constraint to hazard
against other accesses to the memory location being exchanged. However,
the pointer passed to the constraint is a u8 pointer, and thus the
hazard only applies to the first byte of the location.

GCC can take advantage of this, assuming that other portions of the
location are unchanged, as demonstrated with the following test case:

union u {
	unsigned long l;
	unsigned int i[2];
};

unsigned long update_char_hazard(union u *u)
{
	unsigned int a, b;

	a = u->i[1];
	asm ("str %1, %0" : "+Q" (*(char *)&u->l) : "r" (0UL));
	b = u->i[1];

	return a ^ b;
}

unsigned long update_long_hazard(union u *u)
{
	unsigned int a, b;

	a = u->i[1];
	asm ("str %1, %0" : "+Q" (*(long *)&u->l) : "r" (0UL));
	b = u->i[1];

	return a ^ b;
}

The linaro 15.08 GCC 5.1.1 toolchain compiles the above as follows when
using -O2 or above:

0000000000000000 <update_char_hazard>:
   0:	d2800001 	mov	x1, #0x0                   	// #0
   4:	f9000001 	str	x1, [x0]
   8:	d2800000 	mov	x0, #0x0                   	// #0
   c:	d65f03c0 	ret

0000000000000010 <update_long_hazard>:
  10:	b9400401 	ldr	w1, [x0,#4]
  14:	d2800002 	mov	x2, #0x0                   	// #0
  18:	f9000002 	str	x2, [x0]
  1c:	b9400400 	ldr	w0, [x0,#4]
  20:	4a000020 	eor	w0, w1, w0
  24:	d65f03c0 	ret

This patch fixes the issue by passing an unsigned long pointer into the
+Q constraint, as we do for our cmpxchg code. This may hazard against
more than is necessary, but this is better than missing a necessary
hazard.

Fixes: 305d454aaa ("arm64: atomics: implement native {relaxed, acquire, release} atomics")
Cc: <stable@vger.kernel.org> # 4.4.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:44:50 +01:00
Kristina Martsenko
276e93279a arm64: entry: improve data abort handling of tagged pointers
When handling a data abort from EL0, we currently zero the top byte of
the faulting address, as we assume the address is a TTBR0 address, which
may contain a non-zero address tag. However, the address may be a TTBR1
address, in which case we should not zero the top byte. This patch fixes
that. The effect is that the full TTBR1 address is passed to the task's
signal handler (or printed out in the kernel log).

When handling a data abort from EL1, we leave the faulting address
intact, as we assume it's either a TTBR1 address or a TTBR0 address with
tag 0x00. This is true as far as I'm aware, we don't seem to access a
tagged TTBR0 address anywhere in the kernel. Regardless, it's easy to
forget about address tags, and code added in the future may not always
remember to remove tags from addresses before accessing them. So add tag
handling to the EL1 data abort handler as well. This also makes it
consistent with the EL0 data abort handler.

Fixes: d50240a5f6 ("arm64: mm: permit use of tagged pointers at EL0")
Cc: <stable@vger.kernel.org> # 3.12.x-
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:26:59 +01:00
Kristina Martsenko
7dcd9dd8ce arm64: hw_breakpoint: fix watchpoint matching for tagged pointers
When we take a watchpoint exception, the address that triggered the
watchpoint is found in FAR_EL1. We compare it to the address of each
configured watchpoint to see which one was hit.

The configured watchpoint addresses are untagged, while the address in
FAR_EL1 will have an address tag if the data access was done using a
tagged address. The tag needs to be removed to compare the address to
the watchpoints.

Currently we don't remove it, and as a result can report the wrong
watchpoint as being hit (specifically, always either the highest TTBR0
watchpoint or lowest TTBR1 watchpoint). This patch removes the tag.

Fixes: d50240a5f6 ("arm64: mm: permit use of tagged pointers at EL0")
Cc: <stable@vger.kernel.org> # 3.12.x-
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:26:40 +01:00
Kristina Martsenko
81cddd65b5 arm64: traps: fix userspace cache maintenance emulation on a tagged pointer
When we emulate userspace cache maintenance in the kernel, we can
currently send the task a SIGSEGV even though the maintenance was done
on a valid address. This happens if the address has a non-zero address
tag, and happens to not be mapped in.

When we get the address from a user register, we don't currently remove
the address tag before performing cache maintenance on it. If the
maintenance faults, we end up in either __do_page_fault, where find_vma
can't find the VMA if the address has a tag, or in do_translation_fault,
where the tagged address will appear to be above TASK_SIZE. In both
cases, the address is not mapped in, and the task is sent a SIGSEGV.

This patch removes the tag from the address before using it. With this
patch, the fault is handled correctly, the address gets mapped in, and
the cache maintenance succeeds.

As a second bug, if cache maintenance (correctly) fails on an invalid
tagged address, the address gets passed into arm64_notify_segfault,
where find_vma fails to find the VMA due to the tag, and the wrong
si_code may be sent as part of the siginfo_t of the segfault. With this
patch, the correct si_code is sent.

Fixes: 7dd01aef05 ("arm64: trap userspace "dc cvau" cache operation on errata-affected core")
Cc: <stable@vger.kernel.org> # 4.8.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-09 17:26:17 +01:00
Paolo Bonzini
36c344f3f1 Second round of KVM/ARM Changes for v4.12.
Changes include:
  - A fix related to the 32-bit idmap stub
  - A fix to the bitmask used to deode the operands of an AArch32 CP
    instruction
  - We have moved the files shared between arch/arm/kvm and
    arch/arm64/kvm to virt/kvm/arm
  - We add support for saving/restoring the virtual ITS state to
    userspace
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJZEZihAAoJEEtpOizt6ddyGDYH/jmGjDMnryORn2P2o10dUQKJ
 RnHTQYnpOYqnprlkFtZFpmK+mjl/a8R1Btb7GK2EwmovTR95pMYPRqtrCTOL0aQA
 4OToh7+vFGatwxsGCS6utazdhmx0UT/LhO/GEF4G1zOb7eVa4ZtS1NKLP2WjPD1E
 RU3Qn8wa0pESv3tJScv8qo2+PWVX4krbFllhY2Hk0AkVQcI66ExkdVq4ikm1eUXn
 rxzIayLG2bv3KEPNCzozdwoY9tDL+b40q6vN/RHGJmM05SZbbSx2/Bkw2RbslSpD
 2hvhHWX7xeuEBcd5mZO7sP4WS3hM/BI8eX7q+uMeNJ9B+nM82yjGfOTtglVi2cc=
 =JfvQ
 -----END PGP SIGNATURE-----

Merge tag 'kvm-arm-for-v4.12-round2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

Second round of KVM/ARM Changes for v4.12.

Changes include:
 - A fix related to the 32-bit idmap stub
 - A fix to the bitmask used to deode the operands of an AArch32 CP
   instruction
 - We have moved the files shared between arch/arm/kvm and
   arch/arm64/kvm to virt/kvm/arm
 - We add support for saving/restoring the virtual ITS state to
   userspace
2017-05-09 12:51:49 +02:00
Linus Torvalds
857f864014 pci-v4.12-changes
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZEHmsAAoJEFmIoMA60/r88SgQAJbFddueb0+DfJ+USDud4b/Z
 akfS+G1UAm+TgtMyh1wM49dHzFssp36uWJxtWI+bPqBzuy94PMCbz7JVUV28gX9G
 tFhFuc5YH94I/3y85rbZnolb6uZN9MhLjzTFqDC9ilW6HFqmwK4t4wlHSCjQN1St
 svLYvs2G6n6/VK3Fre7/wOvdZ1erG4Qod+kn5Tx3K5TQydmRlaSBfK+DRANuDBkM
 KzGO7Bkc/Cx8hb9pHmaey/wxmNrrgmVjTtWrEnb2tEq833zP4h6GhUIJEKodMSi5
 gXPNZgKlu3n5L592M0UCh4EoHejzkv9wrcsoDm+djmsc5Zg2Howq4kAdHP8k4hUG
 0gt8n0ni9vhJN56jikrGi7cAdHCKSNnx2Ue/qTCbX0ncB3XUMuJxJwCsgW/6wa9f
 oU7tRtTS03UltnKoFAcyYclS4TaSY4SA4ySaK6Hi+cRkdVFDdyHQYbHHNSU7MsA+
 IS2tXvGoIdSYyrZMHSRcl2rRTfYQUkmPEvBF3LvqZr32M4mJMmUNAPLZaly373ZE
 iwq0ZJlrLeM0cqdFIG3S60RtJyQk/HBN1NMqrYHArWOxvWIgNd5F8NCsTTxY3wU3
 IxgBIuUFcbVwVkqEHGs8K5AvB3oghqdnA3eGOV79799eMtLn3LOvyIlpHMSw9WUq
 ags00JtMLitfNPBH3eSl
 =eE4D
 -----END PGP SIGNATURE-----

Merge tag 'pci-v4.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - add framework for supporting PCIe devices in Endpoint mode (Kishon
   Vijay Abraham I)

 - use non-postable PCI config space mappings when possible (Lorenzo
   Pieralisi)

 - clean up and unify mmap of PCI BARs (David Woodhouse)

 - export and unify Function Level Reset support (Christoph Hellwig)

 - avoid FLR for Intel 82579 NICs (Sasha Neftin)

 - add pci_request_irq() and pci_free_irq() helpers (Christoph Hellwig)

 - short-circuit config access failures for disconnected devices (Keith
   Busch)

 - remove D3 sleep delay when possible (Adrian Hunter)

 - freeze PME scan before suspending devices (Lukas Wunner)

 - stop disabling MSI/MSI-X in pci_device_shutdown() (Prarit Bhargava)

 - disable boot interrupt quirk for ASUS M2N-LR (Stefan Assmann)

 - add arch-specific alignment control to improve device passthrough by
   avoiding multiple BARs in a page (Yongji Xie)

 - add sysfs sriov_drivers_autoprobe to control VF driver binding
   (Bodong Wang)

 - allow slots below PCI-to-PCIe "reverse bridges" (Bjorn Helgaas)

 - fix crashes when unbinding host controllers that don't support
   removal (Brian Norris)

 - add driver for MicroSemi Switchtec management interface (Logan
   Gunthorpe)

 - add driver for Faraday Technology FTPCI100 host bridge (Linus
   Walleij)

 - add i.MX7D support (Andrey Smirnov)

 - use generic MSI support for Aardvark (Thomas Petazzoni)

 - make Rockchip driver modular (Brian Norris)

 - advertise 128-byte Read Completion Boundary support for Rockchip
   (Shawn Lin)

 - advertise PCI_EXP_LNKSTA_SLC for Rockchip root port (Shawn Lin)

 - convert atomic_t to refcount_t in HV driver (Elena Reshetova)

 - add CPU IRQ affinity in HV driver (K. Y. Srinivasan)

 - fix PCI bus removal in HV driver (Long Li)

 - add support for ThunderX2 DMA alias topology (Jayachandran C)

 - add ThunderX pass2.x 2nd node MCFG quirk (Tomasz Nowicki)

 - add ITE 8893 bridge DMA alias quirk (Jarod Wilson)

 - restrict Cavium ACS quirk only to CN81xx/CN83xx/CN88xx devices
   (Manish Jaggi)

* tag 'pci-v4.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (146 commits)
  PCI: Don't allow unbinding host controllers that aren't prepared
  ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP
  MAINTAINERS: Add PCI Endpoint maintainer
  Documentation: PCI: Add userguide for PCI endpoint test function
  tools: PCI: Add sample test script to invoke pcitest
  tools: PCI: Add a userspace tool to test PCI endpoint
  Documentation: misc-devices: Add Documentation for pci-endpoint-test driver
  misc: Add host side PCI driver for PCI test function device
  PCI: Add device IDs for DRA74x and DRA72x
  dt-bindings: PCI: dra7xx: Add DT bindings to enable unaligned access
  PCI: dwc: dra7xx: Workaround for errata id i870
  dt-bindings: PCI: dra7xx: Add DT bindings for PCI dra7xx EP mode
  PCI: dwc: dra7xx: Add EP mode support
  PCI: dwc: dra7xx: Facilitate wrapper and MSI interrupts to be enabled independently
  dt-bindings: PCI: Add DT bindings for PCI designware EP mode
  PCI: dwc: designware: Add EP mode support
  Documentation: PCI: Add binding documentation for pci-test endpoint function
  ixgbe: Use pcie_flr() instead of duplicating it
  IB/hfi1: Use pcie_flr() instead of duplicating it
  PCI: imx6: Fix spelling mistake: "contol" -> "control"
  ...
2017-05-08 19:03:25 -07:00
Linus Torvalds
bf5f89463f Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:

 - the rest of MM

 - various misc things

 - procfs updates

 - lib/ updates

 - checkpatch updates

 - kdump/kexec updates

 - add kvmalloc helpers, use them

 - time helper updates for Y2038 issues. We're almost ready to remove
   current_fs_time() but that awaits a btrfs merge.

 - add tracepoints to DAX

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (114 commits)
  drivers/staging/ccree/ssi_hash.c: fix build with gcc-4.4.4
  selftests/vm: add a test for virtual address range mapping
  dax: add tracepoint to dax_insert_mapping()
  dax: add tracepoint to dax_writeback_one()
  dax: add tracepoints to dax_writeback_mapping_range()
  dax: add tracepoints to dax_load_hole()
  dax: add tracepoints to dax_pfn_mkwrite()
  dax: add tracepoints to dax_iomap_pte_fault()
  mtd: nand: nandsim: convert to memalloc_noreclaim_*()
  treewide: convert PF_MEMALLOC manipulations to new helpers
  mm: introduce memalloc_noreclaim_{save,restore}
  mm: prevent potential recursive reclaim due to clearing PF_MEMALLOC
  mm/huge_memory.c: deposit a pgtable for DAX PMD faults when required
  mm/huge_memory.c: use zap_deposited_table() more
  time: delete CURRENT_TIME_SEC and CURRENT_TIME
  gfs2: replace CURRENT_TIME with current_time
  apparmorfs: replace CURRENT_TIME with current_time()
  lustre: replace CURRENT_TIME macro
  fs: ubifs: replace CURRENT_TIME_SEC with current_time
  fs: ufs: use ktime_get_real_ts64() for birthtime
  ...
2017-05-08 18:17:56 -07:00
Laura Abbott
e6ccbff0e9 treewide: decouple cacheflush.h and set_memory.h
Now that all call sites, completely decouple cacheflush.h and
set_memory.h

[sfr@canb.auug.org.au: kprobes/x86: merge fix for set_memory.h decoupling]
  Link: http://lkml.kernel.org/r/20170418180903.10300fd3@canb.auug.org.au
Link: http://lkml.kernel.org/r/1488920133-27229-17-git-send-email-labbott@redhat.com
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:14 -07:00
Laura Abbott
d4bbc30bb0 arm64: use set_memory.h header
The set_memory_* functions have moved to set_memory.h.  Use that header
explicitly.

Link: http://lkml.kernel.org/r/1488920133-27229-4-git-send-email-labbott@redhat.com
Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:13 -07:00
Laura Abbott
299878bac3 treewide: move set_memory_* functions away from cacheflush.h
Patch series "set_memory_* functions header refactor", v3.

The set_memory_* APIs came out of a desire to have a better way to
change memory attributes.  Many of these attributes were linked to cache
functionality so the prototypes were put in cacheflush.h.  These days,
the APIs have grown and have a much wider use than just cache APIs.  To
support this growth, split off set_memory_* and friends into a separate
header file to avoid growing cacheflush.h for APIs that have nothing to
do with caches.

Link: http://lkml.kernel.org/r/1488920133-27229-2-git-send-email-labbott@redhat.com
Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:13 -07:00
Linus Torvalds
2d3e4866de * ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU
support; virtual interrupt controller performance improvements; support
 for userspace virtual interrupt controller (slower, but necessary for
 KVM on the weird Broadcom SoCs used by the Raspberry Pi 3)
 
 * MIPS: basic support for hardware virtualization (ImgTec
 P5600/P6600/I6400 and Cavium Octeon III)
 
 * PPC: in-kernel acceleration for VFIO
 
 * s390: support for guests without storage keys; adapter interruption
 suppression
 
 * x86: usual range of nVMX improvements, notably nested EPT support for
 accessed and dirty bits; emulation of CPL3 CPUID faulting
 
 * generic: first part of VCPU thread request API; kvm_stat improvements
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJZEHUkAAoJEL/70l94x66DBeYH/09wrpJ2FjU4Rqv7FxmqgWfH
 9WGi4wvn/Z+XzQSyfMJiu2SfZVzU69/Y67OMHudy7vBT6knB+ziM7Ntoiu/hUfbG
 0g5KsDX79FW15HuvuuGh9kSjUsj7qsQdyPZwP4FW/6ZoDArV9mibSvdjSmiUSMV/
 2wxaoLzjoShdOuCe9EABaPhKK0XCrOYkygT6Paz1pItDxaSn8iW3ulaCuWMprUfG
 Niq+dFemK464E4yn6HVD88xg5j2eUM6bfuXB3qR3eTR76mHLgtwejBzZdDjLG9fk
 32PNYKhJNomBxHVqtksJ9/7cSR6iNPs7neQ1XHemKWTuYqwYQMlPj1NDy0aslQU=
 =IsiZ
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "ARM:
   - HYP mode stub supports kexec/kdump on 32-bit
   - improved PMU support
   - virtual interrupt controller performance improvements
   - support for userspace virtual interrupt controller (slower, but
     necessary for KVM on the weird Broadcom SoCs used by the Raspberry
     Pi 3)

  MIPS:
   - basic support for hardware virtualization (ImgTec P5600/P6600/I6400
     and Cavium Octeon III)

  PPC:
   - in-kernel acceleration for VFIO

  s390:
   - support for guests without storage keys
   - adapter interruption suppression

  x86:
   - usual range of nVMX improvements, notably nested EPT support for
     accessed and dirty bits
   - emulation of CPL3 CPUID faulting

  generic:
   - first part of VCPU thread request API
   - kvm_stat improvements"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits)
  kvm: nVMX: Don't validate disabled secondary controls
  KVM: put back #ifndef CONFIG_S390 around kvm_vcpu_kick
  Revert "KVM: Support vCPU-based gfn->hva cache"
  tools/kvm: fix top level makefile
  KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING
  KVM: Documentation: remove VM mmap documentation
  kvm: nVMX: Remove superfluous VMX instruction fault checks
  KVM: x86: fix emulation of RSM and IRET instructions
  KVM: mark requests that need synchronization
  KVM: return if kvm_vcpu_wake_up() did wake up the VCPU
  KVM: add explicit barrier to kvm_vcpu_kick
  KVM: perform a wake_up in kvm_make_all_cpus_request
  KVM: mark requests that do not need a wakeup
  KVM: remove #ifndef CONFIG_S390 around kvm_vcpu_wake_up
  KVM: x86: always use kvm_make_request instead of set_bit
  KVM: add kvm_{test,clear}_request to replace {test,clear}_bit
  s390: kvm: Cpu model support for msa6, msa7 and msa8
  KVM: x86: remove irq disablement around KVM_SET_CLOCK/KVM_GET_CLOCK
  kvm: better MWAIT emulation for guests
  KVM: x86: virtualize cpuid faulting
  ...
2017-05-08 12:37:56 -07:00
Eric Auger
280771252c KVM: arm64: vgic-v3: KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES
This patch adds a new attribute to GICV3 KVM device
KVM_DEV_ARM_VGIC_GRP_CTRL group. This allows userspace to
flush all GICR pending tables into guest RAM.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
2017-05-08 14:39:31 +02:00
Eric Auger
3b65808f4b KVM: arm64: vgic-its: KVM_DEV_ARM_ITS_SAVE/RESTORE_TABLES
Introduce new attributes in KVM_DEV_ARM_VGIC_GRP_CTRL group:
- KVM_DEV_ARM_ITS_SAVE_TABLES: saves the ITS tables into guest RAM
- KVM_DEV_ARM_ITS_RESTORE_TABLES: restores them into VGIC internal
  structures.

We hold the vcpus lock during the save and restore to make
sure no vcpu is running.

At this stage the functionality is not yet implemented. Only
the skeleton is put in place.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
[Given we will move the iodev register until setting the base addr]
Reviewed-by: Christoffer Dall <cdall@linaro.org>
2017-05-08 14:36:37 +02:00
Eric Auger
876ae234cb KVM: arm64: vgic-its: KVM_DEV_ARM_VGIC_GRP_ITS_REGS group
The ITS KVM device exposes a new KVM_DEV_ARM_VGIC_GRP_ITS_REGS
group which allows the userspace to save/restore ITS registers.

At this stage the get/set/has operations are not yet implemented.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
2017-05-08 14:33:08 +02:00
Linus Torvalds
ab182e67ec arm64 updates for 4.12:
- kdump support, including two necessary memblock additions:
   memblock_clear_nomap() and memblock_cap_memory_range()
 
 - ARMv8.3 HWCAP bits for JavaScript conversion instructions, complex
   numbers and weaker release consistency
 
 - arm64 ACPI platform MSI support
 
 - arm perf updates: ACPI PMU support, L3 cache PMU in some Qualcomm
   SoCs, Cortex-A53 L2 cache events and DTLB refills, MAINTAINERS update
   for DT perf bindings
 
 - architected timer errata framework (the arch/arm64 changes only)
 
 - support for DMA_ATTR_FORCE_CONTIGUOUS in the arm64 iommu DMA API
 
 - arm64 KVM refactoring to use common system register definitions
 
 - remove support for ASID-tagged VIVT I-cache (no ARMv8 implementation
   using it and deprecated in the architecture) together with some
   I-cache handling clean-up
 
 - PE/COFF EFI header clean-up/hardening
 
 - define BUG() instruction without CONFIG_BUG
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZDKMoAAoJEGvWsS0AyF7xR+YP/0EMEz5MDfCv0PVYj7/AIa0G
 Zphl7OhysIkeDAz7urXw9Jdl0NfORNIqmD1vZNVSc321IyNp56Od+kWd82lBrOWB
 ad3nNT67pEmu0pAW7CO48ju3rTesEnEl3ra45E1tULeLihmv93jc4ZlfXgumlKq3
 /GE84XJ5ZFmluuhq1zgNefeUtyl1tbxTxHJ74+INF7dTd/5sJcphpqS4Dzpb+msT
 20WYliccQCBF9zBFUYHc2KjcXXKRQGxLulGS3MuoN2DLkD+U9YyR/OmA7SoXh2J2
 WXC5b0x856xTQJFCJ39pb7rw5xHjt3l5zfU3VLSvqEVL/+asBqCcgGNtNUgOW1Es
 dEHC6bc66Ley6mn7bbpFE3MK8D+K5q8HwMF6G5KDtIVB6DB/iQ6kzi5aXKoupxtb
 1EuU4OW6cDhmOFQYjgIDofLgqbmVvJofdF6+NfxasfZmWrMgHzv0rYvaCDnAV/Tr
 t7bhH7hf9/KcP/wpk86O2AMKKpgoNTqe1Qy8cWVFFLnut567Pb6zs/L3ZXfleoLv
 t613yM8Zj2fE05ja8ylMDjaasidNpXGttb08/4kAn06Daaoueqla0jmduAhy4aaV
 dQ3OFP9lJ5MFaFnMMTPfU3vtvNLMHuo9MZsYCrv5zCaNNs3lpAPUiPNh588ZscKa
 sWx4PEiaCi+wcOsLsJvh
 =SDkm
 -----END PGP SIGNATURE-----

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - kdump support, including two necessary memblock additions:
   memblock_clear_nomap() and memblock_cap_memory_range()

 - ARMv8.3 HWCAP bits for JavaScript conversion instructions, complex
   numbers and weaker release consistency

 - arm64 ACPI platform MSI support

 - arm perf updates: ACPI PMU support, L3 cache PMU in some Qualcomm
   SoCs, Cortex-A53 L2 cache events and DTLB refills, MAINTAINERS update
   for DT perf bindings

 - architected timer errata framework (the arch/arm64 changes only)

 - support for DMA_ATTR_FORCE_CONTIGUOUS in the arm64 iommu DMA API

 - arm64 KVM refactoring to use common system register definitions

 - remove support for ASID-tagged VIVT I-cache (no ARMv8 implementation
   using it and deprecated in the architecture) together with some
   I-cache handling clean-up

 - PE/COFF EFI header clean-up/hardening

 - define BUG() instruction without CONFIG_BUG

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (92 commits)
  arm64: Fix the DMA mmap and get_sgtable API with DMA_ATTR_FORCE_CONTIGUOUS
  arm64: Print DT machine model in setup_machine_fdt()
  arm64: pmu: Wire-up Cortex A53 L2 cache events and DTLB refills
  arm64: module: split core and init PLT sections
  arm64: pmuv3: handle pmuv3+
  arm64: Add CNTFRQ_EL0 trap handler
  arm64: Silence spurious kbuild warning on menuconfig
  arm64: pmuv3: use arm_pmu ACPI framework
  arm64: pmuv3: handle !PMUv3 when probing
  drivers/perf: arm_pmu: add ACPI framework
  arm64: add function to get a cpu's MADT GICC table
  drivers/perf: arm_pmu: split out platform device probe logic
  drivers/perf: arm_pmu: move irq request/free into probe
  drivers/perf: arm_pmu: split cpu-local irq request/free
  drivers/perf: arm_pmu: rename irq request/free functions
  drivers/perf: arm_pmu: handle no platform_device
  drivers/perf: arm_pmu: simplify cpu_pmu_request_irqs()
  drivers/perf: arm_pmu: factor out pmu registration
  drivers/perf: arm_pmu: fold init into alloc
  drivers/perf: arm_pmu: define armpmu_init_fn
  ...
2017-05-05 12:11:37 -07:00
Catalin Marinas
92f66f84d9 arm64: Fix the DMA mmap and get_sgtable API with DMA_ATTR_FORCE_CONTIGUOUS
While honouring the DMA_ATTR_FORCE_CONTIGUOUS on arm64 (commit
44176bb38f: "arm64: Add support for DMA_ATTR_FORCE_CONTIGUOUS to
IOMMU"), the existing uses of dma_mmap_attrs() and dma_get_sgtable()
have been broken by passing a physically contiguous vm_struct with an
invalid pages pointer through the common iommu API.

Since the coherent allocation with DMA_ATTR_FORCE_CONTIGUOUS uses CMA,
this patch simply reuses the existing swiotlb logic for mmap and
get_sgtable.

Note that the current implementation of get_sgtable (both swiotlb and
iommu) is broken if dma_declare_coherent_memory() is used since such
memory does not have a corresponding struct page. To be addressed in a
subsequent patch.

Fixes: 44176bb38f ("arm64: Add support for DMA_ATTR_FORCE_CONTIGUOUS to IOMMU")
Reported-by: Andrzej Hajda <a.hajda@samsung.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-05 11:41:35 +01:00
Linus Torvalds
8f28472a73 USB patches for 4.12-rc1
Here is the big USB patchset for 4.12-rc1.
 
 Lots of good stuff here, after many many many attempts, the kernel
 finally has a working typeC interface, many thanks to the Heikki and
 Guenter and others who have taken the time to get this merged.  It
 wasn't an easy path for them at all.
 
 There's also a staging driver that uses this new api, which is why it's
 coming in through this tree.
 
 Along with that, there's the usual huge number of changes for gadget
 drivers, xhci, and other stuff.  Johan also finally refactored pretty
 much every driver that was looking at USB endpoints to do it in a common
 way, which will help prevent any "badly-formed" devices from causing
 problems in drivers.  That too wasn't a simple task.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWQvEIQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+yny4gCePCXxnrQdMWE+IMXf1H1hMubLkVkAn0ZWgQkq
 BspgO7ZmGb+9Fpf6YvNz
 =nwAu
 -----END PGP SIGNATURE-----

Merge tag 'usb-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB updates from Greg KH:
 "Here is the big USB patchset for 4.12-rc1.

  Lots of good stuff here, after many many many attempts, the kernel
  finally has a working typeC interface, many thanks to Heikki and
  Guenter and others who have taken the time to get this merged. It
  wasn't an easy path for them at all.

  There's also a staging driver that uses this new api, which is why
  it's coming in through this tree.

  Along with that, there's the usual huge number of changes for gadget
  drivers, xhci, and other stuff. Johan also finally refactored pretty
  much every driver that was looking at USB endpoints to do it in a
  common way, which will help prevent any "badly-formed" devices from
  causing problems in drivers. That too wasn't a simple task.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (263 commits)
  staging: typec: Fairchild FUSB302 Type-c chip driver
  staging: typec: Type-C Port Controller Interface driver (tcpci)
  staging: typec: USB Type-C Port Manager (tcpm)
  usb: host: xhci: remove #ifdef around PM functions
  usb: musb: don't mark of_dev_auxdata as initdata
  usb: misc: legousbtower: Fix buffers on stack
  USB: Revert "cdc-wdm: fix "out-of-sync" due to missing notifications"
  usb: Make sure usb/phy/of gets built-in
  USB: storage: e-mail update in drivers/usb/storage/unusual_devs.h
  usb: host: xhci: print correct command ring address
  usb: host: xhci: delete sp_dma_buffers for scratchpad
  usb: host: xhci: using correct specification chapter reference for DCBAAP
  xhci: switch to pci_alloc_irq_vectors
  usb: host: xhci-plat: set resume_quirk() for R-Car controllers
  usb: host: xhci-plat: add resume_quirk()
  usb: host: xhci-plat: enable clk in resume timing
  usb: host: plat: Enable xHCI plat runtime PM
  USB: serial: ftdi_sio: add device ID for Microsemi/Arrow SF2PLUS Dev Kit
  USB: serial: constify static arrays
  usb: fix some references for /proc/bus/usb
  ...
2017-05-04 18:03:51 -07:00
Linus Torvalds
a96480723c xen: fixes and featrues for 4.12
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQEcBAABAgAGBQJZChTBAAoJELDendYovxMvkXEIAJDpK5UKMsL1Ihgc0DL0OujQ
 UGxLfWJueSA1X7i8BgL/8vfgKxSEB9SUiM+ooHOKXS6oDhyk2RP4MuCe5+lhUbbv
 ZMK5KxHMlVUOD9EjYif8DhhiwRowBbWYEwr8XgY12s0Ya0a9TQLVC+noGsuzqNiH
 1UyzeeWlBae4nulUMMim6urPNq5AEPVeQKNX3S8rlnDp74IKVZuoISMM62b2KRSr
 +R8FVBshXR/HO53YNY0+AfmmUa8T1+dyjL50Eo/QnsG0i+3igOqNrzSKSc6T+nBt
 Zl3KDUE5W3/OlxuR+CIdZZ1KKtjzoAiR3cvVlHs2z7MIio87bJcYJforAqe6Evo=
 =k6in
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-4.12b-rc0b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:
 "Xen fixes and featrues for 4.12. The main changes are:

   - enable building the kernel with Xen support but without enabling
     paravirtualized mode (Vitaly Kuznetsov)

   - add a new 9pfs xen frontend driver (Stefano Stabellini)

   - simplify Xen's cpuid handling by making use of cpu capabilities
     (Juergen Gross)

   - add/modify some headers for new Xen paravirtualized devices
     (Oleksandr Andrushchenko)

   - EFI reset_system support under Xen (Julien Grall)

   - and the usual cleanups and corrections"

* tag 'for-linus-4.12b-rc0b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (57 commits)
  xen: Move xen_have_vector_callback definition to enlighten.c
  xen: Implement EFI reset_system callback
  arm/xen: Consolidate calls to shutdown hypercall in a single helper
  xen: Export xen_reboot
  xen/x86: Call xen_smp_intr_init_pv() on BSP
  xen: Revert commits da72ff5bfc and 72a9b18629
  xen/pvh: Do not fill kernel's e820 map in init_pvh_bootparams()
  xen/scsifront: use offset_in_page() macro
  xen/arm,arm64: rename __generic_dma_ops to xen_get_dma_ops
  xen/arm,arm64: fix xen_dma_ops after 815dd18 "Consolidate get_dma_ops..."
  xen/9pfs: select CONFIG_XEN_XENBUS_FRONTEND
  x86/cpu: remove hypervisor specific set_cpu_features
  vmware: set cpu capabilities during platform initialization
  x86/xen: use capabilities instead of fake cpuid values for xsave
  x86/xen: use capabilities instead of fake cpuid values for x2apic
  x86/xen: use capabilities instead of fake cpuid values for mwait
  x86/xen: use capabilities instead of fake cpuid values for acpi
  x86/xen: use capabilities instead of fake cpuid values for acc
  x86/xen: use capabilities instead of fake cpuid values for mtrr
  x86/xen: use capabilities instead of fake cpuid values for aperf
  ...
2017-05-04 11:37:09 -07:00
Joerg Roedel
2c0248d688 Merge branches 'arm/exynos', 'arm/omap', 'arm/rockchip', 'arm/mediatek', 'arm/smmu', 'arm/core', 'x86/vt-d', 'x86/amd' and 'core' into next 2017-05-04 18:06:17 +02:00
Christoffer Dall
35d2d5d490 KVM: arm/arm64: Move shared files to virt/kvm/arm
For some time now we have been having a lot of shared functionality
between the arm and arm64 KVM support in arch/arm, which not only
required a horrible inter-arch reference from the Makefile in
arch/arm64/kvm, but also created confusion for newcomers to the code
base, as was recently seen on the mailing list.

Further, it causes confusion for things like cscope, which needs special
attention to index specific shared files for arm64 from the arm tree.

Move the shared files into virt/kvm/arm and move the trace points along
with it.  When moving the tracepoints we have to modify the way the vgic
creates definitions of the trace points, so we take the chance to
include the VGIC tracepoints in its very own special vgic trace.h file.

Signed-off-by: Christoffer Dall <cdall@linaro.org>
2017-05-04 13:57:26 +02:00
Linus Torvalds
be580e7522 MMC core:
- Continue to re-factor code to prepare for eMMC CMDQ and blkmq support
  - Introduce queue semantics to prepare for eMMC CMDQ and blkmq support
  - Add helper functions to manage temporary enable/disable of eMMC CMDQ
  - Improve wait-busy detection for SDIO
 
 MMC host:
  - cavium: Add driver to support Cavium controllers
  - cavium: Extend Cavium driver to support Octeon SOCs and ThunderX SOCs
  - bcm2835: Add new driver for Broadcom BCM2835 controller
  - sdhci-xenon: Add driver to support Marvell Xenon SDHCI controller
  - sdhci-tegra: Add support for the Tegra186 variant
  - sdhci-of-esdhc: Support for UHS-I SD cards
  - sdhci-of-esdhc: Support for eMMC HS200 cards
  - sdhci-cadence: Add eMMC HS400 enhanced strobe support
  - sdhci-esdhc-imx: Reset tuning circuit when needed
  - sdhci-pci: Modernize and clean-up some PM related code
  - sdhci-pci: Avoid re-tuning at runtime PM for some Intel devices
  - sdhci-pci|acpi: Use aggressive PM for some Intel BYT controllers
  - sdhci: Re-factoring and modernizations
  - sdhci: Optimize delay loops
  - sdhci: Improve register dump print format
  - sdhci: Add support for the Command Queue Engine
  - meson-gx: Various improvements and clean-ups
  - meson-gx: Add support for CMD23
  - meson-gx: Basic tuning support to avoid CRC errors
  - s3cmci: Enable probing via DT
  - mediatek: Improve tuning support for eMMC HS200 and HS400 mode
  - tmio: Improve DMA support
  - tmio: Use correct response for CMD12
  - dw_mmc: Minor improvements and clean-ups
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZCF8JAAoJEP4mhCVzWIwpjikP/iLwYZOP+aNl1wvHXJ7/UtOB
 bonqPPRLfW6mJkiphZyjnf3ZldS8DoUYp1Jh8gVsWoOPZhFuzAyFTGRJA5t0sEtH
 WzV0X72qzfDESekP1KGZZPQSfqfo/UnIEwa7U0Rlw8jlpvVsbXimqw54e+hCE0n8
 bhZjQihxOkXofCMnS4CxFJwbSCNEkdw6cMgNk72P8KAQllbOA3UbOurAbRUT0I6S
 3H3+8uKh0fZp3BYGV5y8DxzqIRaCz3ed8TTuGFc3YU8sNGEF67AwcbBzfDaegNsR
 qNPU12gccOU5IY8gbG/MMoEpSXodEj0RCW2uDqt+QT289eh3SpPLlS2en/iZj4t6
 F1xnMEg48GpYJbiB4YImfK49c3RQXAtcdwf/v8SUcE4FUktuOsyQIozMglYIsUd1
 fGZ3yr0caRBnwAkbj5GXaG3/VXzMExKYalf990kUuxhHHGuRQLLg0SHkfWNhJNA1
 mw0XHXTrC9GO32PPfylgkdGOOCnlP36sbBPhGQqJUH6yeiy1wO4xoCVSO8iVI5J9
 8W9BGgSYJRlPaItmH2syQEO9dSRMS5BLy7oICTBn+LsszXwMbuNn6cFBkhF1Xxwy
 2MHU+b6EMn4V4qrp0c8gVfMraXkL9H7BwL9aCv1UTuti7d/7NM7G1wNW9qGala3Y
 9cU8nzC1A521kfmDNPPO
 =p+Hb
 -----END PGP SIGNATURE-----

Merge tag 'mmc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Continue to re-factor code to prepare for eMMC CMDQ and blkmq support
   - Introduce queue semantics to prepare for eMMC CMDQ and blkmq support
   - Add helper functions to manage temporary enable/disable of eMMC CMDQ
   - Improve wait-busy detection for SDIO

  MMC host:
   - cavium: Add driver to support Cavium controllers
   - cavium: Extend Cavium driver to support Octeon and ThunderX SOCs
   - bcm2835: Add new driver for Broadcom BCM2835 controller
   - sdhci-xenon: Add driver to support Marvell Xenon SDHCI controller
   - sdhci-tegra: Add support for the Tegra186 variant
   - sdhci-of-esdhc: Support for UHS-I SD cards
   - sdhci-of-esdhc: Support for eMMC HS200 cards
   - sdhci-cadence: Add eMMC HS400 enhanced strobe support
   - sdhci-esdhc-imx: Reset tuning circuit when needed
   - sdhci-pci: Modernize and clean-up some PM related code
   - sdhci-pci: Avoid re-tuning at runtime PM for some Intel devices
   - sdhci-pci|acpi: Use aggressive PM for some Intel BYT controllers
   - sdhci: Re-factoring and modernizations
   - sdhci: Optimize delay loops
   - sdhci: Improve register dump print format
   - sdhci: Add support for the Command Queue Engine
   - meson-gx: Various improvements and clean-ups
   - meson-gx: Add support for CMD23
   - meson-gx: Basic tuning support to avoid CRC errors
   - s3cmci: Enable probing via DT
   - mediatek: Improve tuning support for eMMC HS200 and HS400 mode
   - tmio: Improve DMA support
   - tmio: Use correct response for CMD12
   - dw_mmc: Minor improvements and clean-ups"

* tag 'mmc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (148 commits)
  mmc: sdhci-of-esdhc: limit SD clock for ls1012a/ls1046a
  mmc: sdhci-of-esdhc: poll ESDHC_CLOCK_STABLE bit with udelay
  mmc: sdhci-xenon: Fix default value of LOGIC_TIMING_ADJUST for eMMC5.0 PHY
  mmc: sdhci-xenon: Fix the work flow in xenon_remove().
  MIPS: Octeon: cavium_octeon_defconfig: Enable Octeon MMC
  mmc: sdhci-xenon: Remove redundant dev_err call in get_dt_pad_ctrl_data()
  mmc: cavium: Use module_pci_driver to simplify the code
  mmc: cavium: Add MMC support for Octeon SOCs.
  mmc: cavium: Fix detection of block or byte addressing.
  mmc: core: Export API to allow hosts to get the card address
  mmc: sdio: Fix sdio wait busy implement limitation
  mmc: sdhci-esdhc-imx: reset tuning circuit when power on mmc card
  clk: apn806: fix spelling mistake: "mising" -> "missing"
  mmc: sdhci-of-esdhc: add delay between tuning cycles
  mmc: sdhci: Control the delay between tuning commands
  mmc: sdhci-of-esdhc: add tuning support
  mmc: sdhci-of-esdhc: add support for signal voltage switch
  mmc: sdhci-of-esdhc: add peripheral clock support
  mmc: sdhci-pci: Allow for 3 bytes from Intel DSM
  mmc: cavium: Fix a shift wrapping bug
  ...
2017-05-02 17:34:32 -07:00
Linus Torvalds
8d65b08deb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Millar:
 "Here are some highlights from the 2065 networking commits that
  happened this development cycle:

   1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri)

   2) Add a generic XDP driver, so that anyone can test XDP even if they
      lack a networking device whose driver has explicit XDP support
      (me).

   3) Sparc64 now has an eBPF JIT too (me)

   4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei
      Starovoitov)

   5) Make netfitler network namespace teardown less expensive (Florian
      Westphal)

   6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana)

   7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger)

   8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky)

   9) Multiqueue support in stmmac driver (Joao Pinto)

  10) Remove TCP timewait recycling, it never really could possibly work
      well in the real world and timestamp randomization really zaps any
      hint of usability this feature had (Soheil Hassas Yeganeh)

  11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay
      Aleksandrov)

  12) Add socket busy poll support to epoll (Sridhar Samudrala)

  13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso,
      and several others)

  14) IPSEC hw offload infrastructure (Steffen Klassert)"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits)
  tipc: refactor function tipc_sk_recv_stream()
  tipc: refactor function tipc_sk_recvmsg()
  net: thunderx: Optimize page recycling for XDP
  net: thunderx: Support for XDP header adjustment
  net: thunderx: Add support for XDP_TX
  net: thunderx: Add support for XDP_DROP
  net: thunderx: Add basic XDP support
  net: thunderx: Cleanup receive buffer allocation
  net: thunderx: Optimize CQE_TX handling
  net: thunderx: Optimize RBDR descriptor handling
  net: thunderx: Support for page recycling
  ipx: call ipxitf_put() in ioctl error path
  net: sched: add helpers to handle extended actions
  qed*: Fix issues in the ptp filter config implementation.
  qede: Fix concurrency issue in PTP Tx path processing.
  stmmac: Add support for SIMATIC IOT2000 platform
  net: hns: fix ethtool_get_strings overflow in hns driver
  tcp: fix wraparound issue in tcp_lp
  bpf, arm64: fix jit branch offset related to ldimm64
  bpf, arm64: implement jiting of BPF_XADD
  ...
2017-05-02 16:40:27 -07:00
Linus Torvalds
5a0387a8a8 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.12:

  API:
   - Add batch registration for acomp/scomp
   - Change acomp testing to non-unique compressed result
   - Extend algorithm name limit to 128 bytes
   - Require setkey before accept(2) in algif_aead

  Algorithms:
   - Add support for deflate rfc1950 (zlib)

  Drivers:
   - Add accelerated crct10dif for powerpc
   - Add crc32 in stm32
   - Add sha384/sha512 in ccp
   - Add 3des/gcm(aes) for v5 devices in ccp
   - Add Queue Interface (QI) backend support in caam
   - Add new Exynos RNG driver
   - Add ThunderX ZIP driver
   - Add driver for hardware random generator on MT7623 SoC"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (101 commits)
  crypto: stm32 - Fix OF module alias information
  crypto: algif_aead - Require setkey before accept(2)
  crypto: scomp - add support for deflate rfc1950 (zlib)
  crypto: scomp - allow registration of multiple scomps
  crypto: ccp - Change ISR handler method for a v5 CCP
  crypto: ccp - Change ISR handler method for a v3 CCP
  crypto: crypto4xx - rename ce_ring_contol to ce_ring_control
  crypto: testmgr - Allow ecb(cipher_null) in FIPS mode
  Revert "crypto: arm64/sha - Add constant operand modifier to ASM_EXPORT"
  crypto: ccp - Disable interrupts early on unload
  crypto: ccp - Use only the relevant interrupt bits
  hwrng: mtk - Add driver for hardware random generator on MT7623 SoC
  dt-bindings: hwrng: Add Mediatek hardware random generator bindings
  crypto: crct10dif-vpmsum - Fix missing preempt_disable()
  crypto: testmgr - replace compression known answer test
  crypto: acomp - allow registration of multiple acomps
  hwrng: n2 - Use devm_kcalloc() in n2rng_probe()
  crypto: chcr - Fix error handling related to 'chcr_alloc_shash'
  padata: get_next is never NULL
  crypto: exynos - Add new Exynos RNG driver
  ...
2017-05-02 15:53:46 -07:00
Daniel Borkmann
ddc665a4bb bpf, arm64: fix jit branch offset related to ldimm64
When the instruction right before the branch destination is
a 64 bit load immediate, we currently calculate the wrong
jump offset in the ctx->offset[] array as we only account
one instruction slot for the 64 bit load immediate although
it uses two BPF instructions. Fix it up by setting the offset
into the right slot after we incremented the index.

Before (ldimm64 test 1):

  [...]
  00000020:  52800007  mov w7, #0x0 // #0
  00000024:  d2800060  mov x0, #0x3 // #3
  00000028:  d2800041  mov x1, #0x2 // #2
  0000002c:  eb01001f  cmp x0, x1
  00000030:  54ffff82  b.cs 0x00000020
  00000034:  d29fffe7  mov x7, #0xffff // #65535
  00000038:  f2bfffe7  movk x7, #0xffff, lsl #16
  0000003c:  f2dfffe7  movk x7, #0xffff, lsl #32
  00000040:  f2ffffe7  movk x7, #0xffff, lsl #48
  00000044:  d29dddc7  mov x7, #0xeeee // #61166
  00000048:  f2bdddc7  movk x7, #0xeeee, lsl #16
  0000004c:  f2ddddc7  movk x7, #0xeeee, lsl #32
  00000050:  f2fdddc7  movk x7, #0xeeee, lsl #48
  [...]

After (ldimm64 test 1):

  [...]
  00000020:  52800007  mov w7, #0x0 // #0
  00000024:  d2800060  mov x0, #0x3 // #3
  00000028:  d2800041  mov x1, #0x2 // #2
  0000002c:  eb01001f  cmp x0, x1
  00000030:  540000a2  b.cs 0x00000044
  00000034:  d29fffe7  mov x7, #0xffff // #65535
  00000038:  f2bfffe7  movk x7, #0xffff, lsl #16
  0000003c:  f2dfffe7  movk x7, #0xffff, lsl #32
  00000040:  f2ffffe7  movk x7, #0xffff, lsl #48
  00000044:  d29dddc7  mov x7, #0xeeee // #61166
  00000048:  f2bdddc7  movk x7, #0xeeee, lsl #16
  0000004c:  f2ddddc7  movk x7, #0xeeee, lsl #32
  00000050:  f2fdddc7  movk x7, #0xeeee, lsl #48
  [...]

Also, add a couple of test cases to make sure JITs pass
this test. Tested on Cavium ThunderX ARMv8. The added
test cases all pass after the fix.

Fixes: 8eee539dde ("arm64: bpf: fix out-of-bounds read in bpf2a64_offset()")
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Xi Wang <xi.wang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-02 15:04:50 -04:00
Daniel Borkmann
85f68fe898 bpf, arm64: implement jiting of BPF_XADD
This work adds BPF_XADD for BPF_W/BPF_DW to the arm64 JIT and therefore
completes JITing of all BPF instructions, meaning we can thus also remove
the 'notyet' label and do not need to fall back to the interpreter when
BPF_XADD is used in a program!

This now also brings arm64 JIT in line with x86_64, s390x, ppc64, sparc64,
where all current eBPF features are supported.

BPF_W example from test_bpf:

  .u.insns_int = {
    BPF_ALU32_IMM(BPF_MOV, R0, 0x12),
    BPF_ST_MEM(BPF_W, R10, -40, 0x10),
    BPF_STX_XADD(BPF_W, R10, R0, -40),
    BPF_LDX_MEM(BPF_W, R0, R10, -40),
    BPF_EXIT_INSN(),
  },

  [...]
  00000020:  52800247  mov w7, #0x12 // #18
  00000024:  928004eb  mov x11, #0xffffffffffffffd8 // #-40
  00000028:  d280020a  mov x10, #0x10 // #16
  0000002c:  b82b6b2a  str w10, [x25,x11]
  // start of xadd mapping:
  00000030:  928004ea  mov x10, #0xffffffffffffffd8 // #-40
  00000034:  8b19014a  add x10, x10, x25
  00000038:  f9800151  prfm pstl1strm, [x10]
  0000003c:  885f7d4b  ldxr w11, [x10]
  00000040:  0b07016b  add w11, w11, w7
  00000044:  880b7d4b  stxr w11, w11, [x10]
  00000048:  35ffffab  cbnz w11, 0x0000003c
  // end of xadd mapping:
  [...]

BPF_DW example from test_bpf:

  .u.insns_int = {
    BPF_ALU32_IMM(BPF_MOV, R0, 0x12),
    BPF_ST_MEM(BPF_DW, R10, -40, 0x10),
    BPF_STX_XADD(BPF_DW, R10, R0, -40),
    BPF_LDX_MEM(BPF_DW, R0, R10, -40),
    BPF_EXIT_INSN(),
  },

  [...]
  00000020:  52800247  mov w7,  #0x12 // #18
  00000024:  928004eb  mov x11, #0xffffffffffffffd8 // #-40
  00000028:  d280020a  mov x10, #0x10 // #16
  0000002c:  f82b6b2a  str x10, [x25,x11]
  // start of xadd mapping:
  00000030:  928004ea  mov x10, #0xffffffffffffffd8 // #-40
  00000034:  8b19014a  add x10, x10, x25
  00000038:  f9800151  prfm pstl1strm, [x10]
  0000003c:  c85f7d4b  ldxr x11, [x10]
  00000040:  8b07016b  add x11, x11, x7
  00000044:  c80b7d4b  stxr w11, x11, [x10]
  00000048:  35ffffab  cbnz w11, 0x0000003c
  // end of xadd mapping:
  [...]

Tested on Cavium ThunderX ARMv8, test suite results after the patch:

  No JIT:   [ 3751.855362] test_bpf: Summary: 311 PASSED, 0 FAILED, [0/303 JIT'ed]
  With JIT: [ 3573.759527] test_bpf: Summary: 311 PASSED, 0 FAILED, [303/303 JIT'ed]

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-02 15:04:50 -04:00
Linus Torvalds
204f144c9f Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull fs/compat.c cleanups from Al Viro:
 "More moving of compat syscalls from fs/compat.c to fs/*.c where the
  native counterparts live.

  And death to compat_sys_getdents64() - the only architecture that used
  to need it was ia64, and _that_ has lost biarch support quite a few
  years ago"

* 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fs/compat.c: trim unused includes
  move compat_rw_copy_check_uvector() over to fs/read_write.c
  fhandle: move compat syscalls from compat.c
  open: move compat syscalls from compat.c
  stat: move compat syscalls from compat.c
  fcntl: move compat syscalls from compat.c
  readdir: move compat syscalls from compat.c
  statfs: move compat syscalls from compat.c
  utimes: move compat syscalls from compat.c
  move compat select-related syscalls to fs/select.c
  Remove compat_sys_getdents64()
2017-05-02 11:54:26 -07:00
Stefano Stabellini
e058632670 xen/arm,arm64: fix xen_dma_ops after 815dd18 "Consolidate get_dma_ops..."
The following commit:

  commit 815dd18788
  Author: Bart Van Assche <bart.vanassche@sandisk.com>
  Date:   Fri Jan 20 13:04:04 2017 -0800

      treewide: Consolidate get_dma_ops() implementations

rearranges get_dma_ops in a way that xen_dma_ops are not returned when
running on Xen anymore, dev->dma_ops is returned instead (see
arch/arm/include/asm/dma-mapping.h:get_arch_dma_ops and
include/linux/dma-mapping.h:get_dma_ops).

Fix the problem by storing dev->dma_ops in dev_archdata, and setting
dev->dma_ops to xen_dma_ops. This way, xen_dma_ops is returned naturally
by get_dma_ops. The Xen code can retrieve the original dev->dma_ops from
dev_archdata when needed. It also allows us to remove __generic_dma_ops
from common headers.

Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Tested-by: Julien Grall <julien.grall@arm.com>
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org>        [4.11+]
CC: linux@armlinux.org.uk
CC: catalin.marinas@arm.com
CC: will.deacon@arm.com
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
CC: Julien Grall <julien.grall@arm.com>
2017-05-02 11:14:42 +02:00
Marc Zyngier
c667186f1c arm64: KVM: Fix decoding of Rt/Rt2 when trapping AArch32 CP accesses
Our 32bit CP14/15 handling inherited some of the ARMv7 code for handling
the trapped system registers, completely missing the fact that the
fields for Rt and Rt2 are now 5 bit wide, and not 4...

Let's fix it, and provide an accessor for the most common Rt case.

Cc: stable@vger.kernel.org
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
2017-05-02 09:53:46 +02:00
Linus Torvalds
3fb9268e43 Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
 "The main changes in this cycle were:

   - unwinder fixes and enhancements

   - improve ftrace interaction with the unwinder

   - optimize the code footprint of WARN() and related debugging
     constructs

   - ... plus misc updates, cleanups and fixes"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  x86/unwind: Dump all stacks in unwind_dump()
  x86/unwind: Silence more entry-code related warnings
  x86/ftrace: Fix ebp in ftrace_regs_caller that screws up unwinder
  x86/unwind: Remove unused 'sp' parameter in unwind_dump()
  x86/unwind: Prepend hex mask value with '0x' in unwind_dump()
  x86/unwind: Properly zero-pad 32-bit values in unwind_dump()
  x86/unwind: Ensure stack pointer is aligned
  debug: Avoid setting BUGFLAG_WARNING twice
  x86/unwind: Silence entry-related warnings
  x86/unwind: Read stack return address in update_stack_state()
  x86/unwind: Move common code into update_stack_state()
  debug: Fix __bug_table[] in arch linker scripts
  debug: Add _ONCE() logic to report_bug()
  x86/debug: Define BUG() again for !CONFIG_BUG
  x86/debug: Implement __WARN() using UD0
  x86/ftrace: Use Makefile logic instead of #ifdef for compiling ftrace_*.o
  x86/ftrace: Add -mfentry support to x86_32 with DYNAMIC_FTRACE set
  x86/ftrace: Clean up ftrace_regs_caller
  x86/ftrace: Add stack frame pointer to ftrace_caller
  x86/ftrace: Move the ftrace specific code out of entry_32.S
  ...
2017-05-01 22:07:51 -07:00
Linus Torvalds
3711c94fd6 Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar:
 "The main changes in this cycle were:

   - move BGRT handling to drivers/acpi so it can be shared between x86
     and ARM

   - bring the EFI stub's initrd and FDT allocation logic in line with
     the latest changes to the arm64 boot protocol

   - improvements and fixes to the EFI stub's command line parsing
     routines

   - randomize the virtual mapping of the UEFI runtime services on
     ARM/arm64

   - ... and other misc enhancements, cleanups and fixes"

* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/libstub/arm: Don't use TASK_SIZE when randomizing the RT space
  ef/libstub/arm/arm64: Randomize the base of the UEFI rt services region
  efi/libstub/arm/arm64: Disable debug prints on 'quiet' cmdline arg
  efi/libstub: Unify command line param parsing
  efi/libstub: Fix harmless command line parsing bug
  efi/arm32-stub: Allow boot-time allocations in the vmlinux region
  x86/efi: Clean up a minor mistake in comment
  efi/pstore: Return error code (if any) from efi_pstore_write()
  efi/bgrt: Enable ACPI BGRT handling on arm64
  x86/efi/bgrt: Move efi-bgrt handling out of arch/x86
  efi/arm-stub: Round up FDT allocation to mapping size
  efi/arm-stub: Correct FDT and initrd allocation rules for arm64
2017-05-01 18:20:03 -07:00
Linus Torvalds
174ddfd5df Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
 "The timer departement delivers:

   - more year 2038 rework

   - a massive rework of the arm achitected timer

   - preparatory patches to allow NTP correction of clock event devices
     to avoid early expiry

   - the usual pile of fixes and enhancements all over the place"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (91 commits)
  timer/sysclt: Restrict timer migration sysctl values to 0 and 1
  arm64/arch_timer: Mark errata handlers as __maybe_unused
  Clocksource/mips-gic: Remove redundant non devicetree init
  MIPS/Malta: Probe gic-timer via devicetree
  clocksource: Use GENMASK_ULL in definition of CLOCKSOURCE_MASK
  acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver
  clocksource: arm_arch_timer: add GTDT support for memory-mapped timer
  acpi/arm64: Add memory-mapped timer support in GTDT driver
  clocksource: arm_arch_timer: simplify ACPI support code.
  acpi/arm64: Add GTDT table parse driver
  clocksource: arm_arch_timer: split MMIO timer probing.
  clocksource: arm_arch_timer: add structs to describe MMIO timer
  clocksource: arm_arch_timer: move arch_timer_needs_of_probing into DT init call
  clocksource: arm_arch_timer: refactor arch_timer_needs_probing
  clocksource: arm_arch_timer: split dt-only rate handling
  x86/uv/time: Set ->min_delta_ticks and ->max_delta_ticks
  unicore32/time: Set ->min_delta_ticks and ->max_delta_ticks
  um/time: Set ->min_delta_ticks and ->max_delta_ticks
  tile/time: Set ->min_delta_ticks and ->max_delta_ticks
  score/time: Set ->min_delta_ticks and ->max_delta_ticks
  ...
2017-05-01 16:15:18 -07:00
Linus Torvalds
5db6db0d40 Merge branch 'work.uaccess' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull uaccess unification updates from Al Viro:
 "This is the uaccess unification pile. It's _not_ the end of uaccess
  work, but the next batch of that will go into the next cycle. This one
  mostly takes copy_from_user() and friends out of arch/* and gets the
  zero-padding behaviour in sync for all architectures.

  Dealing with the nocache/writethrough mess is for the next cycle;
  fortunately, that's x86-only. Same for cleanups in iov_iter.c (I am
  sold on access_ok() in there, BTW; just not in this pile), same for
  reducing __copy_... callsites, strn*... stuff, etc. - there will be a
  pile about as large as this one in the next merge window.

  This one sat in -next for weeks. -3KLoC"

* 'work.uaccess' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (96 commits)
  HAVE_ARCH_HARDENED_USERCOPY is unconditional now
  CONFIG_ARCH_HAS_RAW_COPY_USER is unconditional now
  m32r: switch to RAW_COPY_USER
  hexagon: switch to RAW_COPY_USER
  microblaze: switch to RAW_COPY_USER
  get rid of padding, switch to RAW_COPY_USER
  ia64: get rid of copy_in_user()
  ia64: sanitize __access_ok()
  ia64: get rid of 'segment' argument of __do_{get,put}_user()
  ia64: get rid of 'segment' argument of __{get,put}_user_check()
  ia64: add extable.h
  powerpc: get rid of zeroing, switch to RAW_COPY_USER
  esas2r: don't open-code memdup_user()
  alpha: fix stack smashing in old_adjtimex(2)
  don't open-code kernel_setsockopt()
  mips: switch to RAW_COPY_USER
  mips: get rid of tail-zeroing in primitives
  mips: make copy_from_user() zero tail explicitly
  mips: clean and reorder the forest of macros...
  mips: consolidate __invoke_... wrappers
  ...
2017-05-01 14:41:04 -07:00