Commit Graph

840 Commits

Author SHA1 Message Date
Linus Torvalds
192f0f8e9d powerpc updates for 5.3
Notable changes:
 
  - Removal of the NPU DMA code, used by the out-of-tree Nvidia driver, as well
    as some other functions only used by drivers that haven't (yet?) made it
    upstream.
 
  - A fix for a bug in our handling of hardware watchpoints (eg. perf record -e
    mem: ...) which could lead to register corruption and kernel crashes.
 
  - Enable HAVE_ARCH_HUGE_VMAP, which allows us to use large pages for vmalloc
    when using the Radix MMU.
 
  - A large but incremental rewrite of our exception handling code to use gas
    macros rather than multiple levels of nested CPP macros.
 
 And the usual small fixes, cleanups and improvements.
 
 Thanks to:
   Alastair D'Silva, Alexey Kardashevskiy, Andreas Schwab, Aneesh Kumar K.V, Anju
   T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Cédric Le Goater,
   Christian Lamparter, Christophe Leroy, Christophe Lombard, Christoph Hellwig,
   Daniel Axtens, Denis Efremov, Enrico Weigelt, Frederic Barrat, Gautham R.
   Shenoy, Geert Uytterhoeven, Geliang Tang, Gen Zhang, Greg Kroah-Hartman, Greg
   Kurz, Gustavo Romero, Krzysztof Kozlowski, Madhavan Srinivasan, Masahiro
   Yamada, Mathieu Malaterre, Michael Neuling, Nathan Lynch, Naveen N. Rao,
   Nicholas Piggin, Nishad Kamdar, Oliver O'Halloran, Qian Cai, Ravi Bangoria,
   Sachin Sant, Sam Bobroff, Satheesh Rajendran, Segher Boessenkool, Shaokun
   Zhang, Shawn Anastasio, Stewart Smith, Suraj Jitindar Singh, Thiago Jung
   Bauermann, YueHaibing.
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Merge tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Notable changes:

   - Removal of the NPU DMA code, used by the out-of-tree Nvidia driver,
     as well as some other functions only used by drivers that haven't
     (yet?) made it upstream.

   - A fix for a bug in our handling of hardware watchpoints (eg. perf
     record -e mem: ...) which could lead to register corruption and
     kernel crashes.

   - Enable HAVE_ARCH_HUGE_VMAP, which allows us to use large pages for
     vmalloc when using the Radix MMU.

   - A large but incremental rewrite of our exception handling code to
     use gas macros rather than multiple levels of nested CPP macros.

  And the usual small fixes, cleanups and improvements.

  Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Andreas Schwab,
  Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann,
  Athira Rajeev, Cédric Le Goater, Christian Lamparter, Christophe
  Leroy, Christophe Lombard, Christoph Hellwig, Daniel Axtens, Denis
  Efremov, Enrico Weigelt, Frederic Barrat, Gautham R. Shenoy, Geert
  Uytterhoeven, Geliang Tang, Gen Zhang, Greg Kroah-Hartman, Greg Kurz,
  Gustavo Romero, Krzysztof Kozlowski, Madhavan Srinivasan, Masahiro
  Yamada, Mathieu Malaterre, Michael Neuling, Nathan Lynch, Naveen N.
  Rao, Nicholas Piggin, Nishad Kamdar, Oliver O'Halloran, Qian Cai, Ravi
  Bangoria, Sachin Sant, Sam Bobroff, Satheesh Rajendran, Segher
  Boessenkool, Shaokun Zhang, Shawn Anastasio, Stewart Smith, Suraj
  Jitindar Singh, Thiago Jung Bauermann, YueHaibing"

* tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (163 commits)
  powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state.
  powerpc/eeh: Handle hugepages in ioremap space
  ocxl: Update for AFU descriptor template version 1.1
  powerpc/boot: pass CONFIG options in a simpler and more robust way
  powerpc/boot: add {get, put}_unaligned_be32 to xz_config.h
  powerpc/irq: Don't WARN continuously in arch_local_irq_restore()
  powerpc/module64: Use symbolic instructions names.
  powerpc/module32: Use symbolic instructions names.
  powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h
  powerpc/module64: Fix comment in R_PPC64_ENTRY handling
  powerpc/boot: Add lzo support for uImage
  powerpc/boot: Add lzma support for uImage
  powerpc/boot: don't force gzipped uImage
  powerpc/8xx: Add microcode patch to move SMC parameter RAM.
  powerpc/8xx: Use IO accessors in microcode programming.
  powerpc/8xx: replace #ifdefs by IS_ENABLED() in microcode.c
  powerpc/8xx: refactor programming of microcode CPM params.
  powerpc/8xx: refactor printing of microcode patch name.
  powerpc/8xx: Refactor microcode write
  powerpc/8xx: refactor writing of CPM microcode arrays
  ...
2019-07-13 16:08:36 -07:00
Linus Torvalds
39ceda5ce1 Kbuild updates for v5.3
- remove headers_{install,check}_all targets
 
 - remove unreasonable 'depends on !UML' from CONFIG_SAMPLES
 
 - re-implement 'make headers_install' more cleanly
 
 - add new header-test-y syntax to compile-test headers
 
 - compile-test exported headers to ensure they are compilable in
   user-space
 
 - compile-test headers under include/ to ensure they are self-contained
 
 - remove -Waggregate-return, -Wno-uninitialized, -Wno-unused-value flags
 
 - add -Werror=unknown-warning-option for Clang
 
 - add 128-bit built-in types support to genksyms
 
 - fix missed rebuild of modules.builtin
 
 - propagate 'No space left on device' error in fixdep to Make
 
 - allow Clang to use its integrated assembler
 
 - improve some coccinelle scripts
 
 - add a new flag KBUILD_ABS_SRCTREE to request Kbuild to use absolute
   path for $(srctree).
 
 - do not ignore errors when compression utility is missing
 
 - misc cleanups
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Merge tag 'kbuild-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - remove headers_{install,check}_all targets

 - remove unreasonable 'depends on !UML' from CONFIG_SAMPLES

 - re-implement 'make headers_install' more cleanly

 - add new header-test-y syntax to compile-test headers

 - compile-test exported headers to ensure they are compilable in
   user-space

 - compile-test headers under include/ to ensure they are self-contained

 - remove -Waggregate-return, -Wno-uninitialized, -Wno-unused-value
   flags

 - add -Werror=unknown-warning-option for Clang

 - add 128-bit built-in types support to genksyms

 - fix missed rebuild of modules.builtin

 - propagate 'No space left on device' error in fixdep to Make

 - allow Clang to use its integrated assembler

 - improve some coccinelle scripts

 - add a new flag KBUILD_ABS_SRCTREE to request Kbuild to use absolute
   path for $(srctree).

 - do not ignore errors when compression utility is missing

 - misc cleanups

* tag 'kbuild-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (49 commits)
  kbuild: use -- separater intead of $(filter-out ...) for cc-cross-prefix
  kbuild: Inform user to pass ARCH= for make mrproper
  kbuild: fix compression errors getting ignored
  kbuild: add a flag to force absolute path for srctree
  kbuild: replace KBUILD_SRCTREE with boolean building_out_of_srctree
  kbuild: remove src and obj from the top Makefile
  scripts/tags.sh: remove unused environment variables from comments
  scripts/tags.sh: drop SUBARCH support for ARM
  kbuild: compile-test kernel headers to ensure they are self-contained
  kheaders: include only headers into kheaders_data.tar.xz
  kheaders: remove meaningless -R option of 'ls'
  kbuild: support header-test-pattern-y
  kbuild: do not create wrappers for header-test-y
  kbuild: compile-test exported headers to ensure they are self-contained
  init/Kconfig: add CONFIG_CC_CAN_LINK
  kallsyms: exclude kasan local symbols on s390
  kbuild: add more hints about SUBDIRS replacement
  coccinelle: api/stream_open: treat all wait_.*() calls as blocking
  coccinelle: put_device: Add a cast to an expression for an assignment
  coccinelle: put_device: Adjust a message construction
  ...
2019-07-12 16:03:16 -07:00
Satheesh Rajendran
31afa05bf9 powerpc: Enable CONFIG_IPV6 in ppc64_defconfig
Enable CONFIG_IPV6 in ppc64_defconfig to enable
certain network functionalities required for tests.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-04 21:04:06 +10:00
Anton Blanchard
7505a13f85 powerpc/configs: Disable latencytop
latencytop adds almost 4kB to each and every task struct and as such
it doesn't deserve to be in our defconfigs.

Signed-off-by: Anton Blanchard <anton@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-04 17:09:03 +10:00
Krzysztof Kozlowski
14b2f7d908 powerpc/configs: Remove useless UEVENT_HELPER_PATH
Remove the CONFIG_UEVENT_HELPER_PATH because:
1. It is disabled since commit 1be01d4a57 ("driver: base: Disable
   CONFIG_UEVENT_HELPER by default") as its dependency (UEVENT_HELPER) was
   made default to 'n',
2. It is not recommended (help message: "This should not be used today
   [...] creates a high system load") and was kept only for ancient
   userland,
3. Certain userland specifically requests it to be disabled (systemd
   README: "Legacy hotplug slows down the system and confuses udev").

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-03 15:19:36 +10:00
Jiri Pirko
a51486266c net: sched: remove NET_CLS_IND config option
This config option makes only couple of lines optional.
Two small helpers and an int in couple of cls structs.

Remove the config option and always compile this in.
This saves the user from unexpected surprises when he adds
a filter with ingress device match which is silently ignored
in case the config option is not set.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-15 14:06:13 -07:00
Masahiro Yamada
e949f4c2d6 kbuild: add CONFIG_HEADERS_INSTALL and loosen the dependency of samples
Commit 5318321d36 ("samples: disable CONFIG_SAMPLES for UML") used
a big hammer to fix the build errors under the samples/ directory.
Only some samples actually include uapi headers from usr/include.

Introduce CONFIG_HEADERS_INSTALL since 'depends on HEADERS_INSTALL' is
clearer than 'depends on !UML'. If this option is enabled, uapi headers
are installed before starting directory descending.

I added 'depends on HEADERS_INSTALL' to per-sample CONFIG options.
This allows UML to compile some samples.

$ make ARCH=um allmodconfig samples/
  [ snip ]
  CC [M]  samples/configfs/configfs_sample.o
  CC [M]  samples/kfifo/bytestream-example.o
  CC [M]  samples/kfifo/dma-example.o
  CC [M]  samples/kfifo/inttype-example.o
  CC [M]  samples/kfifo/record-example.o
  CC [M]  samples/kobject/kobject-example.o
  CC [M]  samples/kobject/kset-example.o
  CC [M]  samples/trace_events/trace-events-sample.o
  CC [M]  samples/trace_printk/trace-printk.o
  AR      samples/vfio-mdev/built-in.a
  AR      samples/built-in.a

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-06-15 19:57:01 +09:00
Linus Torvalds
4dbf09fea6 This pull request contains the following changes for MTD:
MTD core changes:
 - New AFS partition parser
 - Update MAINTAINERS entry
 - Use of fall-throughs markers
 
 NAND core changes:
 - Support having the bad block markers in either the first, second or
   last page of a block. The combination of all three location is now
   possible.
 - Constification of NAND_OP_PARSER(_PATTERN) elements.
 - Generic NAND DT bindings changed to yaml format (can be used to
   check the proposed bindings. First platform to be fully supported:
   sunxi.
 - Stopped using several legacy hooks.
 - Preparation to use the generic NAND layer with the addition of
   several helpers and the removal of the struct nand_chip from generic
   functions.
 - Kconfig cleanup to prepare the introduction of external ECC engines
   support.
 - Fallthrough comments.
 - Introduction of the SPI-mem dirmap API for SPI-NAND devices.
 
 Raw NAND controller drivers changes:
 - nandsim:
   * Switch to ->exec-op().
 - meson:
   * Misc cleanups and fixes.
   * New OOB layout.
 - Sunxi:
   * A23/A33 NAND DMA support.
 - Ingenic:
   * Full reorganization and cleanup.
   * Clear separation between NAND controller and ECC engine.
   * Support JZ4740 an JZ4725B.
 - Denali:
   * Clear controller/chip separation.
   * ->exec_op() migration.
   * Various cleanups.
 - fsl_elbc:
   * Enable software ECC support.
 - Atmel:
   * Sam9x60 support.
 - GPMI:
   * Introduce the GPMI_IS_MXS() macro.
 - Various trivial/spelling/coding style fixes.
 
 SPI NOR core changes:
 - Print all JEDEC ID bytes on error
 - Fix comment of spi_nor_find_best_erase_type()
 - Add region locking flags for s25fl512s
 
 SPI NOR controller drivers changes:
 - intel-spi:
   * Avoid crossing 4K address boundary on read/write
   * Add support for Intel Comet Lake SPI serial flash
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Merge tag 'mtd/for-5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull MTD updates from Richard Weinberger:
 "MTD core changes:
   - New AFS partition parser
   - Update MAINTAINERS entry
   - Use of fall-throughs markers

  NAND core changes:
   - Support having the bad block markers in either the first, second or
     last page of a block. The combination of all three location is now
     possible.
   - Constification of NAND_OP_PARSER(_PATTERN) elements.
   - Generic NAND DT bindings changed to yaml format (can be used to
     check the proposed bindings. First platform to be fully supported:
     sunxi.
   - Stopped using several legacy hooks.
   - Preparation to use the generic NAND layer with the addition of
     several helpers and the removal of the struct nand_chip from
     generic functions.
   - Kconfig cleanup to prepare the introduction of external ECC engines
     support.
   - Fallthrough comments.
   - Introduction of the SPI-mem dirmap API for SPI-NAND devices.

  Raw NAND controller drivers changes:
   - nandsim:
      - Switch to ->exec-op().
   - meson:
      - Misc cleanups and fixes.
      - New OOB layout.
   - Sunxi:
      - A23/A33 NAND DMA support.
   - Ingenic:
      - Full reorganization and cleanup.
      - Clear separation between NAND controller and ECC engine.
      - Support JZ4740 an JZ4725B.
   - Denali:
      - Clear controller/chip separation.
      - ->exec_op() migration.
      - Various cleanups.
   - fsl_elbc:
      - Enable software ECC support.
   - Atmel:
      - Sam9x60 support.
   - GPMI:
      - Introduce the GPMI_IS_MXS() macro.
   - Various trivial/spelling/coding style fixes.

  SPI NOR core changes:
   - Print all JEDEC ID bytes on error
   - Fix comment of spi_nor_find_best_erase_type()
   - Add region locking flags for s25fl512s

  SPI NOR controller drivers changes:
   - intel-spi:
      - Avoid crossing 4K address boundary on read/write
      - Add support for Intel Comet Lake SPI serial flash"

* tag 'mtd/for-5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (120 commits)
  mtd: part: fix incorrect format specifier for an unsigned long long
  mtd: lpddr_cmds: Mark expected switch fall-through
  mtd: phram: Mark expected switch fall-throughs
  mtd: cfi_cmdset_0002: Mark expected switch fall-throughs
  mtd: cfi_util: mark expected switch fall-throughs
  MAINTAINERS: MTD Git repository is hosted on kernel.org
  MAINTAINERS: Update jffs2 entry
  mtd: afs: add v2 partition parsing
  mtd: afs: factor the IIS read into partition parser
  mtd: afs: factor footer parsing into the v1 part parsing
  mtd: factor out v1 partition parsing
  mtd: afs: simplify partition detection
  mtd: afs: simplify partition parsing
  mtd: partitions: Add OF support to AFS partitions
  mtd: partitions: Add AFS partitions DT bindings
  mtd: afs: Move AFS partition parser to parsers subdir
  mtd: maps: Make uclinux_ram_map static
  mtd: maps: Allow MTD_PHYSMAP with MTD_RAM
  MAINTAINERS: Add myself as MTD maintainer
  MAINTAINERS: Remove my name from the MTD and NAND entries
  ...
2019-05-12 17:57:52 -04:00
Linus Torvalds
b970afcfca powerpc updates for 5.2
Highlights:
 
  - Support for Kernel Userspace Access/Execution Prevention (like
    SMAP/SMEP/PAN/PXN) on some 64-bit and 32-bit CPUs. This prevents the kernel
    from accidentally accessing userspace outside copy_to/from_user(), or
    ever executing userspace.
 
  - KASAN support on 32-bit.
 
  - Rework of where we map the kernel, vmalloc, etc. on 64-bit hash to use the
    same address ranges we use with the Radix MMU.
 
  - A rewrite into C of large parts of our idle handling code for 64-bit Book3S
    (ie. power8 & power9).
 
  - A fast path entry for syscalls on 32-bit CPUs, for a 12-17% speedup in the
    null_syscall benchmark.
 
  - On 64-bit bare metal we have support for recovering from errors with the time
    base (our clocksource), however if that fails currently we hang in __delay()
    and never crash. We now have support for detecting that case and short
    circuiting __delay() so we at least panic() and reboot.
 
  - Add support for optionally enabling the DAWR on Power9, which had to be
    disabled by default due to a hardware erratum. This has the effect of
    enabling hardware breakpoints for GDB, the downside is a badly behaved
    program could crash the machine by pointing the DAWR at cache inhibited
    memory. This is opt-in obviously.
 
  - xmon, our crash handler, gets support for a read only mode where operations
    that could change memory or otherwise disturb the system are disabled.
 
 Plus many clean-ups, reworks and minor fixes etc.
 
 Thanks to:
   Christophe Leroy, Akshay Adiga, Alastair D'Silva, Alexey Kardashevskiy, Andrew
   Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Ben Hutchings,
   Bo YU, Breno Leitao, Cédric Le Goater, Christopher M. Riedl, Christoph
   Hellwig, Colin Ian King, David Gibson, Ganesh Goudar, Gautham R. Shenoy,
   George Spelvin, Greg Kroah-Hartman, Greg Kurz, Horia Geantă, Jagadeesh
   Pagadala, Joel Stanley, Joe Perches, Julia Lawall, Laurentiu Tudor, Laurent
   Vivier, Lukas Bulwahn, Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu
   Malaterre, Michael Neuling, Mukesh Ojha, Nathan Fontenot, Nathan Lynch,
   Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Peng Hao, Qian Cai, Ravi
   Bangoria, Rick Lindsley, Russell Currey, Sachin Sant, Stewart Smith, Sukadev
   Bhattiprolu, Thomas Huth, Tobin C. Harding, Tyrel Datwyler, Valentin
   Schneider, Wei Yongjun, Wen Yang, YueHaibing.
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Merge tag 'powerpc-5.2-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Slightly delayed due to the issue with printk() calling
  probe_kernel_read() interacting with our new user access prevention
  stuff, but all fixed now.

  The only out-of-area changes are the addition of a cpuhp_state, small
  additions to Documentation and MAINTAINERS updates.

  Highlights:

   - Support for Kernel Userspace Access/Execution Prevention (like
     SMAP/SMEP/PAN/PXN) on some 64-bit and 32-bit CPUs. This prevents
     the kernel from accidentally accessing userspace outside
     copy_to/from_user(), or ever executing userspace.

   - KASAN support on 32-bit.

   - Rework of where we map the kernel, vmalloc, etc. on 64-bit hash to
     use the same address ranges we use with the Radix MMU.

   - A rewrite into C of large parts of our idle handling code for
     64-bit Book3S (ie. power8 & power9).

   - A fast path entry for syscalls on 32-bit CPUs, for a 12-17% speedup
     in the null_syscall benchmark.

   - On 64-bit bare metal we have support for recovering from errors
     with the time base (our clocksource), however if that fails
     currently we hang in __delay() and never crash. We now have support
     for detecting that case and short circuiting __delay() so we at
     least panic() and reboot.

   - Add support for optionally enabling the DAWR on Power9, which had
     to be disabled by default due to a hardware erratum. This has the
     effect of enabling hardware breakpoints for GDB, the downside is a
     badly behaved program could crash the machine by pointing the DAWR
     at cache inhibited memory. This is opt-in obviously.

   - xmon, our crash handler, gets support for a read only mode where
     operations that could change memory or otherwise disturb the system
     are disabled.

  Plus many clean-ups, reworks and minor fixes etc.

  Thanks to: Christophe Leroy, Akshay Adiga, Alastair D'Silva, Alexey
  Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar,
  Anton Blanchard, Ben Hutchings, Bo YU, Breno Leitao, Cédric Le Goater,
  Christopher M. Riedl, Christoph Hellwig, Colin Ian King, David Gibson,
  Ganesh Goudar, Gautham R. Shenoy, George Spelvin, Greg Kroah-Hartman,
  Greg Kurz, Horia Geantă, Jagadeesh Pagadala, Joel Stanley, Joe
  Perches, Julia Lawall, Laurentiu Tudor, Laurent Vivier, Lukas Bulwahn,
  Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre, Michael
  Neuling, Mukesh Ojha, Nathan Fontenot, Nathan Lynch, Nicholas Piggin,
  Nick Desaulniers, Oliver O'Halloran, Peng Hao, Qian Cai, Ravi
  Bangoria, Rick Lindsley, Russell Currey, Sachin Sant, Stewart Smith,
  Sukadev Bhattiprolu, Thomas Huth, Tobin C. Harding, Tyrel Datwyler,
  Valentin Schneider, Wei Yongjun, Wen Yang, YueHaibing"

* tag 'powerpc-5.2-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (205 commits)
  powerpc/64s: Use early_mmu_has_feature() in set_kuap()
  powerpc/book3s/64: check for NULL pointer in pgd_alloc()
  powerpc/mm: Fix hugetlb page initialization
  ocxl: Fix return value check in afu_ioctl()
  powerpc/mm: fix section mismatch for setup_kup()
  powerpc/mm: fix redundant inclusion of pgtable-frag.o in Makefile
  powerpc/mm: Fix makefile for KASAN
  powerpc/kasan: add missing/lost Makefile
  selftests/powerpc: Add a signal fuzzer selftest
  powerpc/booke64: set RI in default MSR
  ocxl: Provide global MMIO accessors for external drivers
  ocxl: move event_fd handling to frontend
  ocxl: afu_irq only deals with IRQ IDs, not offsets
  ocxl: Allow external drivers to use OpenCAPI contexts
  ocxl: Create a clear delineation between ocxl backend & frontend
  ocxl: Don't pass pci_dev around
  ocxl: Split pci.c
  ocxl: Remove some unused exported symbols
  ocxl: Remove superfluous 'extern' from headers
  ocxl: read_pasid never returns an error, so make it void
  ...
2019-05-10 05:29:27 -07:00
Richard Weinberger
1c7cbd6347 NAND core changes:
- Support having the bad block markers in either the first, second or
   last page of a block. The combination of all three location is now
   possible.
 - Constification of NAND_OP_PARSER(_PATTERN) elements.
 - Generic NAND DT bindings changed to yaml format (can be used to
   check the proposed bindings. First platform to be fully supported:
   sunxi.
 - Stopped using several legacy hooks.
 - Preparation to use the generic NAND layer with the addition of
   several helpers and the removal of the struct nand_chip from generic
   functions.
 - Kconfig cleanup to prepare the introduction of external ECC engines
   support.
 - Fallthrough comments.
 - Introduction of the SPI-mem dirmap API for SPI-NAND devices.
 
 Raw NAND controller drivers changes:
 - nandsim:
   * Switch to ->exec-op().
 - meson:
   * Misc cleanups and fixes.
   * New OOB layout.
 - Sunxi:
   * A23/A33 NAND DMA support.
 - Ingenic:
   * Full reorganization and cleanup.
   * Clear separation between NAND controller and ECC engine.
   * Support JZ4740 an JZ4725B.
 - Denali:
   * Clear controller/chip separation.
   * ->exec_op() migration.
   * Various cleanups.
 - fsl_elbc:
   * Enable software ECC support.
 - Atmel:
   * Sam9x60 support.
 - GPMI:
   * Introduce the GPMI_IS_MXS() macro.
 - Various trivial/spelling/coding style fixes.
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Merge tag 'nand/for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux into mtd/next

NAND core changes:
- Support having the bad block markers in either the first, second or
  last page of a block. The combination of all three location is now
  possible.
- Constification of NAND_OP_PARSER(_PATTERN) elements.
- Generic NAND DT bindings changed to yaml format (can be used to
  check the proposed bindings. First platform to be fully supported:
  sunxi.
- Stopped using several legacy hooks.
- Preparation to use the generic NAND layer with the addition of
  several helpers and the removal of the struct nand_chip from generic
  functions.
- Kconfig cleanup to prepare the introduction of external ECC engines
  support.
- Fallthrough comments.
- Introduction of the SPI-mem dirmap API for SPI-NAND devices.

Raw NAND controller drivers changes:
- nandsim:
  * Switch to ->exec-op().
- meson:
  * Misc cleanups and fixes.
  * New OOB layout.
- Sunxi:
  * A23/A33 NAND DMA support.
- Ingenic:
  * Full reorganization and cleanup.
  * Clear separation between NAND controller and ECC engine.
  * Support JZ4740 an JZ4725B.
- Denali:
  * Clear controller/chip separation.
  * ->exec_op() migration.
  * Various cleanups.
- fsl_elbc:
  * Enable software ECC support.
- Atmel:
  * Sam9x60 support.
- GPMI:
  * Introduce the GPMI_IS_MXS() macro.
- Various trivial/spelling/coding style fixes.
2019-05-05 11:54:11 +02:00
Joel Stanley
e1619e89c9 powerpc/configs: Add (back) MLX5 ethernet support to skiroot_defconfig
It turns out that some defconfig changes and kernel config option
changes meant we accidentally dropped Ethernet support for Mellanox
CLX5 cards.

Fixes: cbc39809a3 ("powerpc/configs: Update skiroot defconfig")
Reported-by: Carol L Soto <clsoto@us.ibm.com>
Suggested-by: Carol L Soto <clsoto@us.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-05-03 02:54:58 +10:00
Thomas Huth
24c174bb23 powerpc/configs: Enable CONFIG_USB_XHCI_HCD by default
Recent versions of QEMU provide a XHCI device by default these
days instead of an old-fashioned OHCI device:

 https://git.qemu.org/?p=qemu.git;a=commitdiff;h=57040d451315320b7d27

So to get the keyboard working in the graphical console there again,
we should now include XHCI support in the kernel by default, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-04-20 22:02:26 +10:00
Miquel Raynal
72c5af0027 mtd: rawnand: Clarify Kconfig entry MTD_NAND
MTD_NAND is large and encloses much more than what the symbol is
actually used for: raw NAND. Clarify the symbol by naming it
MTD_RAW_NAND instead.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2019-04-18 08:54:00 +02:00
Miquel Raynal
9bb94643b9 mtd: nand: Clarify Kconfig entry for software Hamming ECC entries
The software Hamming ECC correction implementation is referred as
MTD_NAND_ECC which is too generic. Rename it
MTD_NAND_ECC_SW_HAMMING. Also rename MTD_NAND_ECC_SMC which is an
SMC quirk in the Hamming implementation as
MTD_NAND_ECC_SW_HAMMING_SMC.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2019-04-18 08:54:00 +02:00
Michael Ellerman
8adddf349f powerpc/mm/radix: Make Radix require HUGETLB_PAGE
Joel reported weird crashes using skiroot_defconfig, in his case we
jumped into an NX page:

  kernel tried to execute exec-protected page (c000000002bff4f0) - exploit attempt? (uid: 0)
  BUG: Unable to handle kernel instruction fetch
  Faulting instruction address: 0xc000000002bff4f0

Looking at the disassembly, we had simply branched to that address:

  c000000000c001bc  49fff335    bl     c000000002bff4f0

But that didn't match the original kernel image:

  c000000000c001bc  4bfff335    bl     c000000000bff4f0 <kobject_get+0x8>

When STRICT_KERNEL_RWX is enabled, and we're using the radix MMU, we
call radix__change_memory_range() late in boot to change page
protections. We do that both to mark rodata read only and also to mark
init text no-execute. That involves walking the kernel page tables,
and clearing _PAGE_WRITE or _PAGE_EXEC respectively.

With radix we may use hugepages for the linear mapping, so the code in
radix__change_memory_range() uses eg. pmd_huge() to test if it has
found a huge mapping, and if so it stops the page table walk and
changes the PMD permissions.

However if the kernel is built without HUGETLBFS support, pmd_huge()
is just a #define that always returns 0. That causes the code in
radix__change_memory_range() to incorrectly interpret the PMD value as
a pointer to a PTE page rather than as a PTE at the PMD level.

We can see this using `dv` in xmon which also uses pmd_huge():

  0:mon> dv c000000000000000
  pgd  @ 0xc000000001740000
  pgdp @ 0xc000000001740000 = 0x80000000ffffb009
  pudp @ 0xc0000000ffffb000 = 0x80000000ffffa009
  pmdp @ 0xc0000000ffffa000 = 0xc00000000000018f   <- this is a PTE
  ptep @ 0xc000000000000100 = 0xa64bb17da64ab07d   <- kernel text

The end result is we treat the value at 0xc000000000000100 as a PTE
and clear _PAGE_WRITE or _PAGE_EXEC, potentially corrupting the code
at that address.

In Joel's specific case we cleared the sign bit in the offset of the
branch, causing a backward branch to turn into a forward branch which
caused us to branch into a non-executable page. However the exact
nature of the crash depends on kernel version, compiler version, and
other factors.

We need to fix radix__change_memory_range() to not use accessors that
depend on HUGETLBFS, but we also have radix memory hotplug code that
uses pmd_huge() etc that will also need fixing. So for now just
disallow the broken combination of Radix with HUGETLBFS disabled.

The only defconfig we have that is affected is skiroot_defconfig, so
turn on HUGETLBFS there so that it still gets Radix.

Fixes: 566ca99af0 ("powerpc/mm/radix: Add dummy radix_enabled()")
Cc: stable@vger.kernel.org # v4.7+
Reported-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-04-17 18:50:26 +10:00
Linus Torvalds
a9c55d58bc powerpc fixes for 5.1
One fix to prevent runtime allocation of 16GB pages when running in a VM (as
 opposed to bare metal), because it doesn't work.
 
 A small fix to our recently added KCOV support to exempt some more code from
 being instrumented.
 
 Plus a few minor build fixes, a small dead code removal and a defconfig update.
 
 Thanks to:
   Alexey Kardashevskiy, Aneesh Kumar K.V, Christophe Leroy, Jason Yan, Joel
   Stanley, Mahesh Salgaonkar, Mathieu Malaterre.
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Merge tag 'powerpc-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "One fix to prevent runtime allocation of 16GB pages when running in a
  VM (as opposed to bare metal), because it doesn't work.

  A small fix to our recently added KCOV support to exempt some more
  code from being instrumented.

  Plus a few minor build fixes, a small dead code removal and a
  defconfig update.

  Thanks to: Alexey Kardashevskiy, Aneesh Kumar K.V, Christophe Leroy,
  Jason Yan, Joel Stanley, Mahesh Salgaonkar, Mathieu Malaterre"

* tag 'powerpc-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: Include <asm/nmi.h> header file to fix a warning
  powerpc/powernv: Fix compile without CONFIG_TRACEPOINTS
  powerpc/mm: Disable kcov for SLB routines
  powerpc: remove dead code in head_fsl_booke.S
  powerpc/configs: Sync skiroot defconfig
  powerpc/hugetlb: Don't do runtime allocation of 16G pages in LPAR configuration
2019-03-16 10:45:17 -07:00
Alexey Brodkin
3337d5cfe5 configs: get rid of obsolete CONFIG_ENABLE_WARN_DEPRECATED
This Kconfig option was removed during v4.19 development in commit
771c035372 ("deprecate the '__deprecated' attribute warnings entirely
and for good") so there's no point to keep it in defconfigs any longer.

FWIW defconfigs were patched with:
--------------------------->8----------------------
find . -name *_defconfig -exec sed -i '/CONFIG_ENABLE_WARN_DEPRECATED/d' {} \;
--------------------------->8----------------------

Link: http://lkml.kernel.org/r/20190128152434.41969-1-abrodkin@synopsys.com
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07 18:32:02 -08:00
Joel Stanley
805bf3b755 powerpc/configs: Sync skiroot defconfig
This updates the skiroot defconfig with the version from the OpenPower
firmwre build tree.

Important changes are the addition of QED and E1000E ethernet drivers.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-03-05 16:35:54 +11:00
Michael Ellerman
42aee37298 powerpc/configs: Add PPC4xx_OCM to ppc40x_defconfig
There was recently a compilation break to this driver, but we didn't
notice because none of our defconfigs have it enabled. Fix that.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-30 14:00:47 +11:00
Scott Wood
5f470b3638 powerpc/configs/85xx: Enable CONFIG_DEBUG_KERNEL
This is required for CONFIG_DEBUG_INFO to work.

Signed-off-by: Scott Wood <oss@buserror.net>
2018-12-21 22:07:54 -06:00
Michael Ellerman
2b874a5c7b powerpc/configs: Don't enable PPC_EARLY_DEBUG in defconfigs
This reverts the remains of commit b9ef7d6b11 ("powerpc: Update
default configurations").

That commit was proceeded by a commit which added a config option to
control use of BOOTX for early debug, ie. PPC_EARLY_DEBUG_BOOTX, and
then the update of the defconfigs was intended to not change behaviour
by then enabling the new config option.

However enabling PPC_EARLY_DEBUG had other consequences, notably
causing us to register the udbg console at the end of udbg_early_init().

This means on a system which doesn't have anything that BOOTX can
use (most systems), we register the udbg console very early but the
bootx code just throws everything away, meaning early boot messages
are never printed to the console.

What we want to happen is for the udbg console to only be registered
later (from setup_arch()) once we've setup udbg_putc, and then all
early boot messages will be replayed.

Fixes: b9ef7d6b11 ("powerpc: Update default configurations")
Reported-by: Torsten Duwe <duwe@lst.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-20 22:21:20 +11:00
Satheesh Rajendran
721c01ba8b powerpc/configs: Add KVM guest defconfig
This patch adds new defconfig options for powerpc KVM guest
and guest.config with additional config symbols enabled,
which is to build kernel to boot without initramfs and can be used
as place holder for guest specific additional config symbols in future.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-11-26 22:33:37 +11:00
Satheesh Rajendran
b6e8882357 powerpc/configs: Add missing config symbols for ppc64_defconfig
This patch adds missing config symbols for ppc64_defconfig
to enable cgroups, memhotplug, numa balancing and XFS
in core kernel image.

Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-11-26 22:33:37 +11:00
Satheesh Rajendran
2f40d82fef powerpc/configs: Add CONFIG_NR_CPUS to ppc64_defconfig
CONFIG_NR_CPUS is not set in ppc64_defconfig, So it gets default of 32
which is quite small for modern powerpc systems. Instead set a default
of 2048 like other powerpc defconfigs.

Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-11-26 22:33:37 +11:00
Michael Ellerman
4ba34d5dfe powerpc/configs: Update ppc64_defconfig with savedefconfig
Update ppc64_defconfig with savedefconfig. No symbols are added or
removed, this is 100% movement.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-11-26 22:33:37 +11:00
Michael Ellerman
b1cfa0391a powerpc/configs: Remove unnecessary ftrace symbols
In commit 539df7fcb3 ("powerpc/configs: Enable function trace by
default") we added:

  CONFIG_FTRACE=y
  CONFIG_FUNCTION_TRACER=y
  CONFIG_FUNCTION_GRAPH_TRACER=y

To ppc64_defconfig, powernv_defconfig and pseries_defconfig.

But only CONFIG_FUNCTION_TRACER=y is required, CONFIG_FTRACE is
default y if DEBUG_KERNEL is enabled, which we have. And then
CONFIG_FUNCTION_GRAPH_TRACER is default y when CONFIG_FUNCTION_TRACER
is enabled.

The extra symbols were already removed from powernv_defconfig in
commit 9a018fb1e1 ("powerpc/config: powernv_defconfig updates").

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-11-26 22:33:37 +11:00
Petr Vorel
5bd9b4445d powerpc/config: Enable CONFIG_PRINTK_TIME
for 64bit configs which use for CONFIG_LOG_BUF_SHIFT the same
or higher value than the default (currently 17).

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-10-03 15:40:06 +10:00
Joel Stanley
cbc39809a3 powerpc/configs: Update skiroot defconfig
Disable new features from recent releases, and clean out some other
unused options:

  - Enable EXPERT, so we can disable some things
  - Disable non-powerpc BPF decoders
  - Disable TASKSTATS
  - Disable unused syscalls
  - Set more things to be modules
  - Turn off unused network vendors
  - PPC_OF_BOOT_TRAMPOLINE and FB_OF are unused on powernv
  - Drop unused Radeon and Matrox GPU drivers
  - IPV6 support landed in petitboot
  - Bringup related command line powersave=off dropped, switch to quiet

Set CONFIG_I2C_CHARDEV=y as the module is not loaded automatically, and
without this i2cget etc. will fail in the skiroot environment.

This defconfig gets us build coverage of KERNEL_XZ, which was broken in
the 4.19 merge window for powerpc.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-09-19 22:08:12 +10:00
Joel Stanley
b0dc0f8618 powerpc/powernv: Don't select the cpufreq governors
Deciding wich govenors should be built into the kernel can be left to
users to configure.

Fixes: 81f359027a ("cpufreq: powernv: Select CPUFreq related Kconfig options for powernv")
Signed-off-by: Joel Stanley <joel@jms.id.au>
[mpe: Update powernv/ppc64 defconfigs to enable them by default]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-09-17 21:16:26 +10:00
Linus Torvalds
5e2d059b52 powerpc updates for 4.19
Notable changes:
 
  - A fix for a bug in our page table fragment allocator, where a page table page
    could be freed and reallocated for something else while still in use, leading
    to memory corruption etc. The fix reuses pt_mm in struct page (x86 only) for
    a powerpc only refcount.
 
  - Fixes to our pkey support. Several are user-visible changes, but bring us in
    to line with x86 behaviour and/or fix outright bugs. Thanks to Florian Weimer
    for reporting many of these.
 
  - A series to improve the hvc driver & related OPAL console code, which have
    been seen to cause hardlockups at times. The hvc driver changes in particular
    have been in linux-next for ~month.
 
  - Increase our MAX_PHYSMEM_BITS to 128TB when SPARSEMEM_VMEMMAP=y.
 
  - Remove Power8 DD1 and Power9 DD1 support, neither chip should be in use
    anywhere other than as a paper weight.
 
  - An optimised memcmp implementation using Power7-or-later VMX instructions
 
  - Support for barrier_nospec on some NXP CPUs.
 
  - Support for flushing the count cache on context switch on some IBM CPUs
    (controlled by firmware), as a Spectre v2 mitigation.
 
  - A series to enhance the information we print on unhandled signals to bring it
    into line with other arches, including showing the offending VMA and dumping
    the instructions around the fault.
 
 Thanks to:
   Aaro Koskinen, Akshay Adiga, Alastair D'Silva, Alexey Kardashevskiy, Alexey
   Spirkov, Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar,
   Arnd Bergmann, Bartosz Golaszewski, Benjamin Herrenschmidt, Bharat Bhushan,
   Bjoern Noetel, Boqun Feng, Breno Leitao, Bryant G. Ly, Camelia Groza,
   Christophe Leroy, Christoph Hellwig, Cyril Bur, Dan Carpenter, Daniel Klamt,
   Darren Stevens, Dave Young, David Gibson, Diana Craciun, Finn Thain, Florian
   Weimer, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geoff Levand,
   Guenter Roeck, Gustavo Romero, Haren Myneni, Hari Bathini, Joel Stanley,
   Jonathan Neuschäfer, Kees Cook, Madhavan Srinivasan, Mahesh Salgaonkar, Markus
   Elfring, Mathieu Malaterre, Mauro S. M. Rodrigues, Michael Hanselmann, Michael
   Neuling, Michael Schmitz, Mukesh Ojha, Murilo Opsfelder Araujo, Nicholas
   Piggin, Parth Y Shah, Paul Mackerras, Paul Menzel, Ram Pai, Randy Dunlap,
   Rashmica Gupta, Reza Arbab, Rodrigo R. Galvao, Russell Currey, Sam Bobroff,
   Scott Wood, Shilpasri G Bhat, Simon Guo, Souptick Joarder, Stan Johnson,
   Thiago Jung Bauermann, Tyrel Datwyler, Vaibhav Jain, Vasant Hegde, Venkat Rao
   B, zhong jiang.
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Merge tag 'powerpc-4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Notable changes:

   - A fix for a bug in our page table fragment allocator, where a page
     table page could be freed and reallocated for something else while
     still in use, leading to memory corruption etc. The fix reuses
     pt_mm in struct page (x86 only) for a powerpc only refcount.

   - Fixes to our pkey support. Several are user-visible changes, but
     bring us in to line with x86 behaviour and/or fix outright bugs.
     Thanks to Florian Weimer for reporting many of these.

   - A series to improve the hvc driver & related OPAL console code,
     which have been seen to cause hardlockups at times. The hvc driver
     changes in particular have been in linux-next for ~month.

   - Increase our MAX_PHYSMEM_BITS to 128TB when SPARSEMEM_VMEMMAP=y.

   - Remove Power8 DD1 and Power9 DD1 support, neither chip should be in
     use anywhere other than as a paper weight.

   - An optimised memcmp implementation using Power7-or-later VMX
     instructions

   - Support for barrier_nospec on some NXP CPUs.

   - Support for flushing the count cache on context switch on some IBM
     CPUs (controlled by firmware), as a Spectre v2 mitigation.

   - A series to enhance the information we print on unhandled signals
     to bring it into line with other arches, including showing the
     offending VMA and dumping the instructions around the fault.

  Thanks to: Aaro Koskinen, Akshay Adiga, Alastair D'Silva, Alexey
  Kardashevskiy, Alexey Spirkov, Alistair Popple, Andrew Donnellan,
  Aneesh Kumar K.V, Anju T Sudhakar, Arnd Bergmann, Bartosz Golaszewski,
  Benjamin Herrenschmidt, Bharat Bhushan, Bjoern Noetel, Boqun Feng,
  Breno Leitao, Bryant G. Ly, Camelia Groza, Christophe Leroy, Christoph
  Hellwig, Cyril Bur, Dan Carpenter, Daniel Klamt, Darren Stevens, Dave
  Young, David Gibson, Diana Craciun, Finn Thain, Florian Weimer,
  Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geoff Levand,
  Guenter Roeck, Gustavo Romero, Haren Myneni, Hari Bathini, Joel
  Stanley, Jonathan Neuschäfer, Kees Cook, Madhavan Srinivasan, Mahesh
  Salgaonkar, Markus Elfring, Mathieu Malaterre, Mauro S. M. Rodrigues,
  Michael Hanselmann, Michael Neuling, Michael Schmitz, Mukesh Ojha,
  Murilo Opsfelder Araujo, Nicholas Piggin, Parth Y Shah, Paul
  Mackerras, Paul Menzel, Ram Pai, Randy Dunlap, Rashmica Gupta, Reza
  Arbab, Rodrigo R. Galvao, Russell Currey, Sam Bobroff, Scott Wood,
  Shilpasri G Bhat, Simon Guo, Souptick Joarder, Stan Johnson, Thiago
  Jung Bauermann, Tyrel Datwyler, Vaibhav Jain, Vasant Hegde, Venkat
  Rao, zhong jiang"

* tag 'powerpc-4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (234 commits)
  powerpc/mm/book3s/radix: Add mapping statistics
  powerpc/uaccess: Enable get_user(u64, *p) on 32-bit
  powerpc/mm/hash: Remove unnecessary do { } while(0) loop
  powerpc/64s: move machine check SLB flushing to mm/slb.c
  powerpc/powernv/idle: Fix build error
  powerpc/mm/tlbflush: update the mmu_gather page size while iterating address range
  powerpc/mm: remove warning about ‘type’ being set
  powerpc/32: Include setup.h header file to fix warnings
  powerpc: Move `path` variable inside DEBUG_PROM
  powerpc/powermac: Make some functions static
  powerpc/powermac: Remove variable x that's never read
  cxl: remove a dead branch
  powerpc/powermac: Add missing include of header pmac.h
  powerpc/kexec: Use common error handling code in setup_new_fdt()
  powerpc/xmon: Add address lookup for percpu symbols
  powerpc/mm: remove huge_pte_offset_and_shift() prototype
  powerpc/lib: Use patch_site to patch copy_32 functions once cache is enabled
  powerpc/pseries: Fix endianness while restoring of r3 in MCE handler.
  powerpc/fadump: merge adjacent memory ranges to reduce PT_LOAD segements
  powerpc/fadump: handle crash memory ranges array index overflow
  ...
2018-08-17 11:32:50 -07:00
Michael Büsch
209b43759d ssb: Remove SSB_WARN_ON, SSB_BUG_ON and SSB_DEBUG
Use the standard WARN_ON instead.
If a small kernel is desired, WARN_ON can be disabled globally.

Also remove SSB_DEBUG. Besides WARN_ON it only adds a tiny debug check.
Include this check unconditionally.

Signed-off-by: Michael Buesch <m@bues.ch>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-08-09 18:47:47 +03:00
Camelia Groza
24f36ce616 powerpc/configs/dpaa: enable the Cortina PHY driver
Cortina PHYs are present on T4240RDB and T2080RDB. Enable the driver
by default.

Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
2018-08-08 17:13:45 -05:00
Michael Ellerman
8db0c9d416 powerpc: Add ppc32_allmodconfig defconfig target
Because the allmodconfig logic just sets every symbol to M or Y, it
has the effect of always generating a 64-bit config, because
CONFIG_PPC64 becomes Y.

So to make it easier for folks to test 32-bit code, provide a phony
defconfig target that generates a 32-bit allmodconfig.

The 32-bit port has several mutually exclusive CPU types, we choose
the Book3S variants as that's what the help text in Kconfig says is
most common.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-24 22:03:15 +10:00
Mark Greer
92c8c16f34 powerpc/embedded6xx: Remove C2K board support
The C2K platform appears to be orphaned so remove code supporting it.

CC: Remi Machet <rmachet@nvidia.com>
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Acked-by: Remi Machet <remi@machet.us>
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-06-04 00:39:22 +10:00
Nicholas Piggin
9a018fb1e1 powerpc/config: powernv_defconfig updates
For consideration:

* Add NVDIMM support - Enables greater testing, mambo device.
* Add IPv6 support built in + additional modules - Because it's 2018 maan.
* Add DEFERRED_STRUCT_PAGE_INIT - Let's see what breaks.
* Add PPC_MEMTRACE - Small powernv debugfs driver for getting hardware traces.
* Add MEMORY_FAILURE - Machine check exceptions can now drive memory failure.
* Turn on FANOTIFY - This is the current filesystem notification feature.
* Turn on SCOM_DEBUGFS - Handy for hardware/firmware debugging, security risk?
* Turn on async SCSI scanning - Let's see what breaks.
* Add MLX5 driver as a module - Popular demand.
* Add CRYPTO_CRCT10DIF_VPMSUM - POWER8 T10DIF acceleration.

* Make a bunch of USB hid drivers modules.
* Make SCSI SG, SR, and FC modules - FC is huge.
* Make video drivers except AST GPU modules - Also huge.
* Make PCI serial driver a module - Uncommon.
* Make more things modules, NFS FS, RAM disk, netconsole, MS-DOS fs.

* Get rid of /dev/port - Not used.
* Remove PPS and PTP subsystms - Unusual.
* Remove legacy BSD ttys - Long dead.
* Remove IDE - Deprecated and replaced with ATA.
* Remove WIRELESS - Until we get POWER9 laptops.
* Remove RAW - Long deprecated in favour of direct IO.
* Remove floppy, parport, and PS2 input devices - not supported.
* Remove virtio drivers, ballooning - We're host only.
* Remove PPP - Sorry Paulus.

This results in a significantly smaller vmlinux:

    text      data       bss        dec   filename
13143383   5277944   1317856   19739183   vanilla
12263281   4852074   1341720   18457075   patched

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-10 23:25:07 +10:00
Jonathan Neuschäfer
c4c19684fa powerpc: wii_defconfig: Disable BCMA support
The B43 driver only needs CONFIG_SSB to support the WLAN card found in
the Wii. Configure it accordingly, and disable BCMA bus support to save
a bit of space.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-10 23:25:07 +10:00
Jonathan Neuschäfer
1a6d51f499 powerpc: wii_defconfig: Enable Wii SDHCI driver
This allows access to the SD card and the BCM4318 Wifi module.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-10 23:25:06 +10:00
Jonathan Neuschäfer
d75f98dd24 powerpc: wii_defconfig: Enable GPIO-related options
Now that there's a GPIO driver for the Wii, let's enable the following
drivers:

- the GPIO driver itself
- gpio-keys
- gpio-poweroff
- gpio-leds and a few LED triggers

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-10 23:25:06 +10:00
Jonathan Neuschäfer
a84813f5bf powerpc: wii_defconfig: Disable Ethernet driver support code
The Wii doesn't have built-in Ethernet and USB Ethernet adapters are in
a different menu. Disable CONFIG_ETHERNET to save some space in support
code for Ethernet drivers.

Note that this patch doesn't disable any Ethernet drivers, because they
are not enabled by default.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-10 23:25:05 +10:00
Paul Gortmaker
3bc6cf5a86 powerpc: remove retired sbc834x support
I no longer have a functional version of this board for even the most
basic sanity boot testing, and they have not been available for purchase
for quite some years now.

There is no point in adding a burden to testing coverage that does
walk all the possible defconfigs, so with all the above in mind, it
makes sense to remove it.  Of course it will remain in the git history
for anyone who happens to stumble on one and wants to tinker with it.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-03 22:32:30 +10:00
Christoph Hellwig
e184f2bf4d scsi: remove the fdomain and fdomain_cs drivers
These drivers haven't seen any recent bug fixing and are two of the last
drivers using the scsi_module.c infrastruture that has been deprecated
15 years ago.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-19 22:54:47 -04:00
Linus Torvalds
03f51d4efa powerpc updates for 4.16
Highlights:
 
  - Enable support for memory protection keys aka "pkeys" on Power7/8/9 when
    using the hash table MMU.
 
  - Extend our interrupt soft masking to support masking PMU interrupts as well
    as "normal" interrupts, and then use that to implement local_t for a ~4x
    speedup vs the current atomics-based implementation.
 
  - A new driver "ocxl" for "Open Coherent Accelerator Processor Interface
    (OpenCAPI)" devices.
 
  - Support for new device tree properties on PowerVM to describe hotpluggable
    memory and devices.
 
  - Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE to the 64-bit VDSO.
 
  - Freescale updates from Scott:
      "Contains fixes for CPM GPIO and an FSL PCI erratum workaround, plus a
       minor cleanup patch."
 
 As well as quite a lot of other changes all over the place, and small fixes and
 cleanups as always.
 
 Thanks to:
   Alan Modra, Alastair D'Silva, Alexey Kardashevskiy, Alistair Popple, Andreas
   Schwab, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anshuman
   Khandual, Anton Blanchard, Arnd Bergmann, Balbir Singh, Benjamin
   Herrenschmidt, Bhaktipriya Shridhar, Bryant G. Ly, Cédric Le Goater,
   Christophe Leroy, Christophe Lombard, Cyril Bur, David Gibson, Desnes A. Nunes
   do Rosario, Dmitry Torokhov, Frederic Barrat, Geert Uytterhoeven, Guilherme G.
   Piccoli, Gustavo A. R. Silva, Gustavo Romero, Ivan Mikhaylov, Joakim
   Tjernlund, Joe Perches, Josh Poimboeuf, Juan J. Alvarez, Julia Cartwright,
   Kamalesh Babulal, Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre,
   Michael Bringmann, Michael Hanselmann, Michael Neuling, Nathan Fontenot,
   Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Philippe Bergheaud, Ram Pai,
   Russell Currey, Santosh Sivaraj, Scott Wood, Seth Forshee, Simon Guo, Stewart
   Smith, Sukadev Bhattiprolu, Thiago Jung Bauermann, Vaibhav Jain, Vasyl
   Gomonovych.
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Merge tag 'powerpc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights:

   - Enable support for memory protection keys aka "pkeys" on Power7/8/9
     when using the hash table MMU.

   - Extend our interrupt soft masking to support masking PMU interrupts
     as well as "normal" interrupts, and then use that to implement
     local_t for a ~4x speedup vs the current atomics-based
     implementation.

   - A new driver "ocxl" for "Open Coherent Accelerator Processor
     Interface (OpenCAPI)" devices.

   - Support for new device tree properties on PowerVM to describe
     hotpluggable memory and devices.

   - Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE to the 64-bit
     VDSO.

   - Freescale updates from Scott: fixes for CPM GPIO and an FSL PCI
     erratum workaround, plus a minor cleanup patch.

  As well as quite a lot of other changes all over the place, and small
  fixes and cleanups as always.

  Thanks to: Alan Modra, Alastair D'Silva, Alexey Kardashevskiy,
  Alistair Popple, Andreas Schwab, Andrew Donnellan, Aneesh Kumar K.V,
  Anju T Sudhakar, Anshuman Khandual, Anton Blanchard, Arnd Bergmann,
  Balbir Singh, Benjamin Herrenschmidt, Bhaktipriya Shridhar, Bryant G.
  Ly, Cédric Le Goater, Christophe Leroy, Christophe Lombard, Cyril Bur,
  David Gibson, Desnes A. Nunes do Rosario, Dmitry Torokhov, Frederic
  Barrat, Geert Uytterhoeven, Guilherme G. Piccoli, Gustavo A. R. Silva,
  Gustavo Romero, Ivan Mikhaylov, Joakim Tjernlund, Joe Perches, Josh
  Poimboeuf, Juan J. Alvarez, Julia Cartwright, Kamalesh Babulal,
  Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre, Michael
  Bringmann, Michael Hanselmann, Michael Neuling, Nathan Fontenot,
  Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Philippe Bergheaud,
  Ram Pai, Russell Currey, Santosh Sivaraj, Scott Wood, Seth Forshee,
  Simon Guo, Stewart Smith, Sukadev Bhattiprolu, Thiago Jung Bauermann,
  Vaibhav Jain, Vasyl Gomonovych"

* tag 'powerpc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (199 commits)
  powerpc/mm/radix: Fix build error when RADIX_MMU=n
  macintosh/ams-input: Use true and false for boolean values
  macintosh: change some data types from int to bool
  powerpc/watchdog: Print the NIP in soft_nmi_interrupt()
  powerpc/watchdog: regs can't be null in soft_nmi_interrupt()
  powerpc/watchdog: Tweak watchdog printks
  powerpc/cell: Remove axonram driver
  rtc-opal: Fix handling of firmware error codes, prevent busy loops
  powerpc/mpc52xx_gpt: make use of raw_spinlock variants
  macintosh/adb: Properly mark continued kernel messages
  powerpc/pseries: Fix cpu hotplug crash with memoryless nodes
  powerpc/numa: Ensure nodes initialized for hotplug
  powerpc/numa: Use ibm,max-associativity-domains to discover possible nodes
  powerpc/kernel: Block interrupts when updating TIDR
  powerpc/powernv/idoa: Remove unnecessary pcidev from pci_dn
  powerpc/mm/nohash: do not flush the entire mm when range is a single page
  powerpc/pseries: Add Initialization of VF Bars
  powerpc/pseries/pci: Associate PEs to VFs in configure SR-IOV
  powerpc/eeh: Add EEH notify resume sysfs
  powerpc/eeh: Add EEH operations to notify resume
  ...
2018-02-02 10:01:04 -08:00
Linus Torvalds
47fcc0360c Driver Core updates for 4.16-rc1
Here is the set of "big" driver core patches for 4.16-rc1.
 
 The majority of the work here is in the firmware subsystem, with reworks
 to try to attempt to make the code easier to handle in the long run, but
 no functional change.  There's also some tree-wide sysfs attribute
 fixups with lots of acks from the various subsystem maintainers, as well
 as a handful of other normal fixes and changes.
 
 And finally, some license cleanups for the driver core and sysfs code.
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of "big" driver core patches for 4.16-rc1.

  The majority of the work here is in the firmware subsystem, with
  reworks to try to attempt to make the code easier to handle in the
  long run, but no functional change. There's also some tree-wide sysfs
  attribute fixups with lots of acks from the various subsystem
  maintainers, as well as a handful of other normal fixes and changes.

  And finally, some license cleanups for the driver core and sysfs code.

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

* tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (48 commits)
  device property: Define type of PROPERTY_ENRTY_*() macros
  device property: Reuse property_entry_free_data()
  device property: Move property_entry_free_data() upper
  firmware: Fix up docs referring to FIRMWARE_IN_KERNEL
  firmware: Drop FIRMWARE_IN_KERNEL Kconfig option
  USB: serial: keyspan: Drop firmware Kconfig options
  sysfs: remove DEBUG defines
  sysfs: use SPDX identifiers
  drivers: base: add coredump driver ops
  sysfs: add attribute specification for /sysfs/devices/.../coredump
  test_firmware: fix missing unlock on error in config_num_requests_store()
  test_firmware: make local symbol test_fw_config static
  sysfs: turn WARN() into pr_warn()
  firmware: Fix a typo in fallback-mechanisms.rst
  treewide: Use DEVICE_ATTR_WO
  treewide: Use DEVICE_ATTR_RO
  treewide: Use DEVICE_ATTR_RW
  sysfs.h: Use octal permissions
  component: add debugfs support
  bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate
  ...
2018-02-01 10:00:28 -08:00
Benjamin Gilbert
7f55c733b6 firmware: Drop FIRMWARE_IN_KERNEL Kconfig option
It doesn't actually do anything.  Merge its help text into
EXTRA_FIRMWARE.

Fixes: 5620a0d1aa ("firmware: delete in-kernel firmware")
Fixes: 0946b2fb38 ("firmware: cleanup FIRMWARE_IN_KERNEL message")
Signed-off-by: Benjamin Gilbert <benjamin.gilbert@coreos.com>
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25 12:46:30 +01:00
Benjamin Gilbert
003948c54e USB: serial: keyspan: Drop firmware Kconfig options
The USB_SERIAL_KEYSPAN_* firmware options no longer do anything.

Fixes: 5620a0d1aa ("firmware: delete in-kernel firmware")
Signed-off-by: Benjamin Gilbert <benjamin.gilbert@coreos.com>
Cc: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25 12:46:30 +01:00
Marc Zyngier
c5baa1be8f irqdomain: Kill CONFIG_IRQ_DOMAIN_DEBUG
CONFIG_IRQ_DOMAIN_DEBUG is similar to CONFIG_GENERIC_IRQ_DEBUGFS,
just with less information.

Spring cleanup time.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Yang Shunyong <shunyong.yang@hxt-semitech.com>
Link: https://lkml.kernel.org/r/20180117142647.23622-1-marc.zyngier@arm.com
2018-01-24 12:32:58 +01:00
Benjamin Herrenschmidt
bba9bc89b9 powerpc: Add aacraid and nvme to powernv_defconfig
These adapters can be found in a number of our systems, so let's
enable the corresponding drivers by default.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-16 23:47:15 +11:00
Christophe Leroy
2a45addd21 powerpc/8xx: Remove CPU6 ERRATA Workaround
CPU6 ERRATA affects only MPC860 revisions prior to C.0. Manufacturing
of those revisiosn was stopped in 1999-2000.
Therefore, it has been almost 20 years since this ERRATA has been
fixed in the silicon.

This patch removes the workaround for that ERRATA.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-16 23:47:12 +11:00
Andrew Donnellan
deed2ec5a7 powerpc/configs: Enable I2C_CHARDEV for pseries and powernv
i2c-dev provides an interface for userspace programs to interact with I2C
devices, and is very helpful for I2C-related debugging.

Enable it in pseries_defconfig and powernv_defconfig. It's already enabled
in many other powerpc defconfigs.

Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-10-22 12:08:31 +02:00
Michael Neuling
e366b921c7 powerpc: Add PPC_EMULATED_STATS to powernv_defconfig
This is useful, especially for developers.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-10-06 20:47:32 +11:00