Commit Graph

3514 Commits

Author SHA1 Message Date
Attilio Rao
c711288727 x86: xen: Cleanup and remove x86_init.paging.pagetable_setup_done()
At this stage x86_init.paging.pagetable_setup_done is only used in the
XEN case. Move its content in the x86_init.paging.pagetable_init setup
function and remove the now unused x86_init.paging.pagetable_setup_done
remaining infrastructure.

Signed-off-by: Attilio Rao <attilio.rao@citrix.com>
Acked-by: <konrad.wilk@oracle.com>
Cc: <Ian.Campbell@citrix.com>
Cc: <Stefano.Stabellini@eu.citrix.com>
Cc: <xen-devel@lists.xensource.com>
Link: http://lkml.kernel.org/r/1345580561-8506-5-git-send-email-attilio.rao@citrix.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-09-12 15:33:06 +02:00
Attilio Rao
843b8ed2ec x86: Move paging_init() call to x86_init.paging.pagetable_init()
Move the paging_init() call to the platform specific pagetable_init()
function, so we can get rid of the extra pagetable_setup_done()
function pointer.

Signed-off-by: Attilio Rao <attilio.rao@citrix.com>
Acked-by: <konrad.wilk@oracle.com>
Cc: <Ian.Campbell@citrix.com>
Cc: <Stefano.Stabellini@eu.citrix.com>
Cc: <xen-devel@lists.xensource.com>
Link: http://lkml.kernel.org/r/1345580561-8506-4-git-send-email-attilio.rao@citrix.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-09-12 15:33:06 +02:00
Attilio Rao
7737b215ad x86: Rename pagetable_setup_start() to pagetable_init()
In preparation for unifying the pagetable_setup_start() and
pagetable_setup_done() setup functions, rename appropriately all the
infrastructure related to pagetable_setup_start().

Signed-off-by: Attilio Rao <attilio.rao@citrix.com>
Ackedd-by: <konrad.wilk@oracle.com>
Cc: <Ian.Campbell@citrix.com>
Cc: <Stefano.Stabellini@eu.citrix.com>
Cc: <xen-devel@lists.xensource.com>
Link: http://lkml.kernel.org/r/1345580561-8506-3-git-send-email-attilio.rao@citrix.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-09-12 15:33:06 +02:00
Attilio Rao
73090f8993 x86: Remove base argument from x86_init.paging.pagetable_setup_start
We either use swapper_pg_dir or the argument is unused. Preparatory
patch to simplify platform pagetable setup further.

Signed-off-by: Attilio Rao <attilio.rao@citrix.com>
Ackedb-by: <konrad.wilk@oracle.com>
Cc: <Ian.Campbell@citrix.com>
Cc: <Stefano.Stabellini@eu.citrix.com>
Cc: <xen-devel@lists.xensource.com>
Link: http://lkml.kernel.org/r/1345580561-8506-2-git-send-email-attilio.rao@citrix.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-09-12 15:33:06 +02:00
Richard Weinberger
83be4ffa1a x86/spinlocks: Fix comment in spinlock.h
This comment is no longer true.  We support up to 2^16 CPUs
because __ticket_t is an u16 if NR_CPUS is larger than 256.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-08-22 09:52:47 +02:00
Linus Torvalds
1ca0049f2c Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Various fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86-64, kcmp: The kcmp system call can be common
  arch/x86/kernel/kdebugfs.c: Ensure a consistent return value in error case
  x86/mce: Add quirk for instruction recovery on Sandy Bridge processors
  x86/mce: Move MCACOD defines from mce-severity.c to <asm/mce.h>
  x86/ioapic: Fix NULL pointer dereference on CPU hotplug after disabling irqs
  x86, nops: Missing break resulting in incorrect selection on Intel
  x86: CONFIG_CC_STACKPROTECTOR=y is no longer experimental
2012-08-03 10:59:36 -07:00
Linus Torvalds
bd463a0606 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Fix merge window fallout and fix sleep profiling (this was always
  broken, so it's not a fix for the merge window - we can skip this one
  from the head of the tree)."

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/trace: Add ability to set a target task for events
  perf/x86: Fix USER/KERNEL tagging of samples properly
  perf/x86/intel/uncore: Make UNCORE_PMU_HRTIMER_INTERVAL 64-bit
2012-08-03 10:57:20 -07:00
Linus Torvalds
fc6bdb59a5 Merge branch 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc
Pull OLPC platform updates from Andres Salomon:
 "These move the OLPC Embedded Controller driver out of
  arch/x86/platform and into drivers/platform/olpc.

  OLPC machines are now ARM-based (which means lots of x86 and ARM
  changes), but are typically pretty self-contained..  so it makes more
  sense to go through a separate OLPC tree after getting the appropriate
  review/ACKs."

* 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc:
  x86: OLPC: move s/r-related EC cmds to EC driver
  Platform: OLPC: move global variables into priv struct
  Platform: OLPC: move debugfs support from x86 EC driver
  x86: OLPC: switch over to using new EC driver on x86
  Platform: OLPC: add a suspended flag to the EC driver
  Platform: OLPC: turn EC driver into a platform_driver
  Platform: OLPC: allow EC cmd to be overridden, and create a workqueue to call it
  drivers: OLPC: update various drivers to include olpc-ec.h
  Platform: OLPC: add a stub to drivers/platform/ for the OLPC EC driver
2012-08-02 11:52:39 -07:00
Andres Salomon
85f90cf6ca x86: OLPC: switch over to using new EC driver on x86
This uses the new EC driver framework in drivers/platform/olpc.  The
XO-1 and XO-1.5-specific code is still in arch/x86, but the generic stuff
(including a new workqueue; no more running EC commands with IRQs disabled!)
can be shared with other architectures.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Paul Fox <pgf@laptop.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2012-07-31 23:27:30 -04:00
Andres Salomon
3bf9428f22 drivers: OLPC: update various drivers to include olpc-ec.h
Switch over to using olpc-ec.h in multiple steps, so as not to break builds.
This covers every driver that calls olpc_ec_cmd().

Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Paul Fox <pgf@laptop.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2012-07-31 23:27:29 -04:00
Andres Salomon
392a325c43 Platform: OLPC: add a stub to drivers/platform/ for the OLPC EC driver
The OLPC EC driver has outgrown arch/x86/platform/.  It's time to both
share common code amongst different architectures, as well as move it out
of arch/x86/.  The XO-1.75 is ARM-based, and the EC driver shares a lot of
code with the x86 code.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Paul Fox <pgf@laptop.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2012-07-31 23:27:29 -04:00
Linus Torvalds
bca1a5c0ea Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
 "The biggest changes are Intel Nehalem-EX PMU uncore support, uprobes
  updates/cleanups/fixes from Oleg and diverse tooling updates (mostly
  fixes) now that Arnaldo is back from vacation."

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  uprobes: __replace_page() needs munlock_vma_page()
  uprobes: Rename vma_address() and make it return "unsigned long"
  uprobes: Fix register_for_each_vma()->vma_address() check
  uprobes: Introduce vaddr_to_offset(vma, vaddr)
  uprobes: Teach build_probe_list() to consider the range
  uprobes: Remove insert_vm_struct()->uprobe_mmap()
  uprobes: Remove copy_vma()->uprobe_mmap()
  uprobes: Fix overflow in vma_address()/find_active_uprobe()
  uprobes: Suppress uprobe_munmap() from mmput()
  uprobes: Uprobe_mmap/munmap needs list_for_each_entry_safe()
  uprobes: Clean up and document write_opcode()->lock_page(old_page)
  uprobes: Kill write_opcode()->lock_page(new_page)
  uprobes: __replace_page() should not use page_address_in_vma()
  uprobes: Don't recheck vma/f_mapping in write_opcode()
  perf/x86: Fix missing struct before structure name
  perf/x86: Fix format definition of SNB-EP uncore QPI box
  perf/x86: Make bitfield unsigned
  perf/x86: Fix LLC-* and node-* events on Intel SandyBridge
  perf/x86: Add Intel Nehalem-EX uncore support
  perf/x86: Fix typo in format definition of uncore PCU filter
  ...
2012-07-31 15:34:13 -07:00
Peter Zijlstra
d07bdfd322 perf/x86: Fix USER/KERNEL tagging of samples properly
Some PMUs don't provide a full register set for their sample,
specifically 'advanced' PMUs like AMD IBS and Intel PEBS which provide
'better' than regular interrupt accuracy.

In this case we use the interrupt regs as basis and over-write some
fields (typically IP) with different information.

The perf core however uses user_mode() to distinguish user/kernel
samples, user_mode() relies on regs->cs. If the interrupt skid pushed
us over a boundary the new IP might not be in the same domain as the
interrupt.

Commit ce5c1fe9a9 ("perf/x86: Fix USER/KERNEL tagging of samples")
tried to fix this by making the perf core use kernel_ip(). This
however is wrong (TM), as pointed out by Linus, since it doesn't allow
for VM86 and non-zero based segments in IA32 mode.

Therefore, provide a new helper to set the regs->ip field,
set_linear_ip(), which massages the regs into a suitable state
assuming the provided IP is in fact a linear address.

Also modify perf_instruction_pointer() and perf_callchain_user() to
deal with segments base offsets.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1341910954.3462.102.camel@twins
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-31 17:02:04 +02:00
Will Deacon
c1d7e01d78 ipc: use Kconfig options for __ARCH_WANT_[COMPAT_]IPC_PARSE_VERSION
Rather than #define the options manually in the architecture code, add
Kconfig options for them and select them there instead.  This also allows
us to select the compat IPC version parsing automatically for platforms
using the old compat IPC interface.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30 17:25:21 -07:00
Linus Torvalds
4cb38750d4 Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/mm changes from Peter Anvin:
 "The big change here is the patchset by Alex Shi to use INVLPG to flush
  only the affected pages when we only need to flush a small page range.

  It also removes the special INVALIDATE_TLB_VECTOR interrupts (32
  vectors!) and replace it with an ordinary IPI function call."

Fix up trivial conflicts in arch/x86/include/asm/apic.h (added code next
to changed line)

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/tlb: Fix build warning and crash when building for !SMP
  x86/tlb: do flush_tlb_kernel_range by 'invlpg'
  x86/tlb: replace INVALIDATE_TLB_VECTOR by CALL_FUNCTION_VECTOR
  x86/tlb: enable tlb flush range support for x86
  mm/mmu_gather: enable tlb flush range in generic mmu_gather
  x86/tlb: add tlb_flushall_shift knob into debugfs
  x86/tlb: add tlb_flushall_shift for specific CPU
  x86/tlb: fall back to flush all when meet a THP large page
  x86/flush_tlb: try flush_tlb_single one by one in flush_tlb_range
  x86/tlb_info: get last level TLB entry number of CPU
  x86: Add read_mostly declaration/definition to variables from smp.h
  x86: Define early read-mostly per-cpu macros
2012-07-26 13:17:17 -07:00
Linus Torvalds
0a2fe19ccc Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pul x86/efi changes from Ingo Molnar:
 "This tree adds an EFI bootloader handover protocol, which, once
  supported on the bootloader side, will make bootup faster and might
  result in simpler bootloaders.

  The other change activates the EFI wall clock time accessors on x86-64
  as well, instead of the legacy RTC readout."

* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, efi: Handover Protocol
  x86-64/efi: Use EFI to deal with platform wall clock
2012-07-26 13:13:25 -07:00
Linus Torvalds
c1b669b72a Merge branches 'x86-cleanups-for-linus' and 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanup and cpufeature from Ingo Molnar:
 "Just a single cleanup and and a commit that adds new CPU feature
  names"

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, boot: Remove ancient, unconditionally #ifdef'd out dead code

* 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, cpufeature: Add the RDSEED and ADX features
2012-07-26 13:12:09 -07:00
Linus Torvalds
44a6b84421 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:

 - Fixed algorithm construction hang when self-test fails.
 - Added SHA variants to talitos AEAD list.
 - New driver for Exynos random number generator.
 - Performance enhancements for arc4.
 - Added hwrng support to caam.
 - Added ahash support to caam.
 - Fixed bad kfree in aesni-intel.
 - Allow aesni-intel in FIPS mode.
 - Added atmel driver with support for AES/3DES/SHA.
 - Bug fixes for mv_cesa.
 - CRC hardware driver for BF60x family processors.

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (66 commits)
  crypto: twofish-avx - remove useless instruction
  crypto: testmgr - add aead cbc aes hmac sha1,256,512 test vectors
  crypto: talitos - add sha224, sha384 and sha512 to existing AEAD algorithms
  crypto: talitos - export the talitos_submit function
  crypto: talitos - move talitos structures to header file
  crypto: atmel - add new tests to tcrypt
  crypto: atmel - add Atmel SHA1/SHA256 driver
  crypto: atmel - add Atmel DES/TDES driver
  crypto: atmel - add Atmel AES driver
  ARM: AT91SAM9G45: add crypto peripherals
  crypto: testmgr - allow aesni-intel and ghash_clmulni-intel in fips mode
  hwrng: exynos - Add support for Exynos random number generator
  crypto: aesni-intel - fix wrong kfree pointer
  crypto: caam - ERA retrieval and printing for SEC device
  crypto: caam - Using alloc_coherent for caam job rings
  crypto: algapi - Fix hang on crypto allocation
  crypto: arc4 - now arc needs blockcipher support
  crypto: caam - one tasklet per job ring
  crypto: caam - consolidate memory barriers from job ring en/dequeue
  crypto: caam - only query h/w in job ring dequeue path
  ...
2012-07-26 13:00:59 -07:00
Tony Luck
736edce5f3 x86/mce: Move MCACOD defines from mce-severity.c to <asm/mce.h>
We will need some of these values in mce.c. Move them to the
appropriate header file so they are available.

Acked-by: Borislav Petkov <bp@amd64.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: Chen Gong <gong.chen@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Link: http://lkml.kernel.org/r/0ccfb1af5fe35e537b7cd8e4d448bf7d851dbfb9.1343078495.git.tony.luck@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-26 15:05:47 +02:00
Jovi Zhang
35d56ca9d4 perf/x86: Fix missing struct before structure name
When CONFIG_PERF_EVENTS disabled, there will have a compiliation
error, because missing struct before structure name.

Signed-off-by: Jovi Zhang <bookjovi@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Jiri Kosina <trivial@kernel.org>
Link: http://lkml.kernel.org/r/CACV3sbKF%3DCX%2B2jWEWesfCA6rBoQ3wDM4-5ac9MuBtVbCtMRHdQ@mail.gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-26 15:04:34 +02:00
Linus Torvalds
97027da6ad IOMMU Updates for Linux v3.6-rc1
The most important part of these updates is the IOMMU groups code
 enhancement written by Alex Williamson. It abstracts the problem that a
 given hardware IOMMU can't isolate any given device from any other
 device (e.g. 32 bit PCI devices can't usually be isolated). Devices that
 can't be isolated are grouped together. This code is required for the
 upcoming VFIO framework.
 
 Another IOMMU-API change written by be is the introduction of domain
 attributes. This makes it easier to handle GART-like IOMMUs with the
 IOMMU-API because now the start-address and the size of the domain
 address space can be queried.
 
 Besides that there are a few cleanups and fixes for the NVidia Tegra
 IOMMU drivers and the reworked init-code for the AMD IOMMU. The later is
 from my patch-set to support interrupt remapping. The rest of this
 patch-set requires x86 changes which are not mergabe yet. So full
 support for interrupt remapping with AMD IOMMUs will come in a future
 merge window.
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Merge tag 'iommu-updates-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:
 "The most important part of these updates is the IOMMU groups code
  enhancement written by Alex Williamson.  It abstracts the problem that
  a given hardware IOMMU can't isolate any given device from any other
  device (e.g.  32 bit PCI devices can't usually be isolated).  Devices
  that can't be isolated are grouped together.  This code is required
  for the upcoming VFIO framework.

  Another IOMMU-API change written by me is the introduction of domain
  attributes.  This makes it easier to handle GART-like IOMMUs with the
  IOMMU-API because now the start-address and the size of the domain
  address space can be queried.

  Besides that there are a few cleanups and fixes for the NVidia Tegra
  IOMMU drivers and the reworked init-code for the AMD IOMMU.  The
  latter is from my patch-set to support interrupt remapping.  The rest
  of this patch-set requires x86 changes which are not mergabe yet.  So
  full support for interrupt remapping with AMD IOMMUs will come in a
  future merge window."

* tag 'iommu-updates-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (33 commits)
  iommu/amd: Fix hotplug with iommu=pt
  iommu/amd: Add missing spin_lock initialization
  iommu/amd: Convert iommu initialization to state machine
  iommu/amd: Introduce amd_iommu_init_dma routine
  iommu/amd: Move unmap_flush message to amd_iommu_init_dma_ops()
  iommu/amd: Split enable_iommus() routine
  iommu/amd: Introduce early_amd_iommu_init routine
  iommu/amd: Move informational prinks out of iommu_enable
  iommu/amd: Split out PCI related parts of IOMMU initialization
  iommu/amd: Use acpi_get_table instead of acpi_table_parse
  iommu/amd: Fix sparse warnings
  iommu/tegra: Don't call alloc_pdir with as->lock
  iommu/tegra: smmu: Fix unsleepable memory allocation at alloc_pdir()
  iommu/tegra: smmu: Remove unnecessary sanity check at alloc_pdir()
  iommu/exynos: Implement DOMAIN_ATTR_GEOMETRY attribute
  iommu/tegra: Implement DOMAIN_ATTR_GEOMETRY attribute
  iommu/msm: Implement DOMAIN_ATTR_GEOMETRY attribute
  iommu/omap: Implement DOMAIN_ATTR_GEOMETRY attribute
  iommu/vt-d: Implement DOMAIN_ATTR_GEOMETRY attribute
  iommu/amd: Implement DOMAIN_ATTR_GEOMETRY attribute
  ...
2012-07-24 16:24:11 -07:00
Linus Torvalds
6dd53aa456 PCI changes for the 3.6 merge window:
Host bridge hotplug
     - Add MMCONFIG support for hot-added host bridges (Jiang Liu)
   Device hotplug
     - Move fixups from __init to __devinit (Sebastian Andrzej Siewior)
     - Call FINAL fixups for hot-added devices, too (Myron Stowe)
     - Factor out generic code for P2P bridge hot-add (Yinghai Lu)
     - Remove all functions in a slot, not just those with _EJx (Amos Kong)
   Dynamic resource management
     - Track bus number allocation (struct resource tree per domain) (Yinghai Lu)
     - Make P2P bridge 1K I/O windows work with resource reassignment (Bjorn Helgaas, Yinghai Lu)
     - Disable decoding while updating 64-bit BARs (Bjorn Helgaas)
   Power management
     - Add PCIe runtime D3cold support (Huang Ying)
   Virtualization
     - Add VFIO infrastructure (ACS, DMA source ID quirks) (Alex Williamson)
     - Add quirks for devices with broken INTx masking (Jan Kiszka)
   Miscellaneous
     - Fix some PCI Express capability version issues (Myron Stowe)
     - Factor out some arch code with a weak, generic, pcibios_setup() (Myron Stowe)
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Merge tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Host bridge hotplug:
    - Add MMCONFIG support for hot-added host bridges (Jiang Liu)
  Device hotplug:
    - Move fixups from __init to __devinit (Sebastian Andrzej Siewior)
    - Call FINAL fixups for hot-added devices, too (Myron Stowe)
    - Factor out generic code for P2P bridge hot-add (Yinghai Lu)
    - Remove all functions in a slot, not just those with _EJx (Amos
      Kong)
  Dynamic resource management:
    - Track bus number allocation (struct resource tree per domain)
      (Yinghai Lu)
    - Make P2P bridge 1K I/O windows work with resource reassignment
      (Bjorn Helgaas, Yinghai Lu)
    - Disable decoding while updating 64-bit BARs (Bjorn Helgaas)
  Power management:
    - Add PCIe runtime D3cold support (Huang Ying)
  Virtualization:
    - Add VFIO infrastructure (ACS, DMA source ID quirks) (Alex
      Williamson)
    - Add quirks for devices with broken INTx masking (Jan Kiszka)
  Miscellaneous:
    - Fix some PCI Express capability version issues (Myron Stowe)
    - Factor out some arch code with a weak, generic, pcibios_setup()
      (Myron Stowe)"

* tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (122 commits)
  PCI: hotplug: ensure a consistent return value in error case
  PCI: fix undefined reference to 'pci_fixup_final_inited'
  PCI: build resource code for M68K architecture
  PCI: pciehp: remove unused pciehp_get_max_lnk_width(), pciehp_get_cur_lnk_width()
  PCI: reorder __pci_assign_resource() (no change)
  PCI: fix truncation of resource size to 32 bits
  PCI: acpiphp: merge acpiphp_debug and debug
  PCI: acpiphp: remove unused res_lock
  sparc/PCI: replace pci_cfg_fake_ranges() with pci_read_bridge_bases()
  PCI: call final fixups hot-added devices
  PCI: move final fixups from __init to __devinit
  x86/PCI: move final fixups from __init to __devinit
  MIPS/PCI: move final fixups from __init to __devinit
  PCI: support sizing P2P bridge I/O windows with 1K granularity
  PCI: reimplement P2P bridge 1K I/O windows (Intel P64H2)
  PCI: disable MEM decoding while updating 64-bit MEM BARs
  PCI: leave MEM and IO decoding disabled during 64-bit BAR sizing, too
  PCI: never discard enable/suspend/resume_early/resume fixups
  PCI: release temporary reference in __nv_msi_ht_cap_quirk()
  PCI: restructure 'pci_do_fixups()'
  ...
2012-07-24 16:17:07 -07:00
Linus Torvalds
62c4d9afa4 Features:
* Performance improvement to lower the amount of traps the hypervisor
    has to do 32-bit guests. Mainly for setting PTE entries and updating
    TLS descriptors.
  * MCE polling driver to collect hypervisor MCE buffer and present them to
    /dev/mcelog.
  * Physical CPU online/offline support. When an privileged guest is booted
    it is present with virtual CPUs, which might have an 1:1 to physical
    CPUs but usually don't. This provides mechanism to offline/online physical
    CPUs.
 Bug-fixes for:
  * Coverity found fixes in the console and ACPI processor driver.
  * PVonHVM kexec fixes along with some cleanups.
  * Pages that fall within E820 gaps and non-RAM regions (and had been
    released to hypervisor) would be populated back, but potentially in
    non-RAM regions.
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Merge tag 'stable/for-linus-3.6-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen update from Konrad Rzeszutek Wilk:
 "Features:
   * Performance improvement to lower the amount of traps the hypervisor
     has to do 32-bit guests.  Mainly for setting PTE entries and
     updating TLS descriptors.
   * MCE polling driver to collect hypervisor MCE buffer and present
     them to /dev/mcelog.
   * Physical CPU online/offline support.  When an privileged guest is
     booted it is present with virtual CPUs, which might have an 1:1 to
     physical CPUs but usually don't.  This provides mechanism to
     offline/online physical CPUs.
  Bug-fixes for:
   * Coverity found fixes in the console and ACPI processor driver.
   * PVonHVM kexec fixes along with some cleanups.
   * Pages that fall within E820 gaps and non-RAM regions (and had been
     released to hypervisor) would be populated back, but potentially in
     non-RAM regions."

* tag 'stable/for-linus-3.6-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: populate correct number of pages when across mem boundary (v2)
  xen PVonHVM: move shared_info to MMIO before kexec
  xen: simplify init_hvm_pv_info
  xen: remove cast from HYPERVISOR_shared_info assignment
  xen: enable platform-pci only in a Xen guest
  xen/pv-on-hvm kexec: shutdown watches from old kernel
  xen/x86: avoid updating TLS descriptors if they haven't changed
  xen/x86: add desc_equal() to compare GDT descriptors
  xen/mm: zero PTEs for non-present MFNs in the initial page table
  xen/mm: do direct hypercall in xen_set_pte() if batching is unavailable
  xen/hvc: Fix up checks when the info is allocated.
  xen/acpi: Fix potential memory leak.
  xen/mce: add .poll method for mcelog device driver
  xen/mce: schedule a workqueue to avoid sleep in atomic context
  xen/pcpu: Xen physical cpus online/offline sys interface
  xen/mce: Register native mce handler as vMCE bounce back point
  x86, MCE, AMD: Adjust initcall sequence for xen
  xen/mce: Add mcelog support for Xen platform
2012-07-24 13:14:03 -07:00
Linus Torvalds
5fecc9d8f5 KVM updates for the 3.6 merge window
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Merge tag 'kvm-3.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Avi Kivity:
 "Highlights include
  - full big real mode emulation on pre-Westmere Intel hosts (can be
    disabled with emulate_invalid_guest_state=0)
  - relatively small ppc and s390 updates
  - PCID/INVPCID support in guests
  - EOI avoidance; 3.6 guests should perform better on 3.6 hosts on
    interrupt intensive workloads)
  - Lockless write faults during live migration
  - EPT accessed/dirty bits support for new Intel processors"

Fix up conflicts in:
 - Documentation/virtual/kvm/api.txt:

   Stupid subchapter numbering, added next to each other.

 - arch/powerpc/kvm/booke_interrupts.S:

   PPC asm changes clashing with the KVM fixes

 - arch/s390/include/asm/sigp.h, arch/s390/kvm/sigp.c:

   Duplicated commits through the kvm tree and the s390 tree, with
   subsequent edits in the KVM tree.

* tag 'kvm-3.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (93 commits)
  KVM: fix race with level interrupts
  x86, hyper: fix build with !CONFIG_KVM_GUEST
  Revert "apic: fix kvm build on UP without IOAPIC"
  KVM guest: switch to apic_set_eoi_write, apic_write
  apic: add apic_set_eoi_write for PV use
  KVM: VMX: Implement PCID/INVPCID for guests with EPT
  KVM: Add x86_hyper_kvm to complete detect_hypervisor_platform check
  KVM: PPC: Critical interrupt emulation support
  KVM: PPC: e500mc: Fix tlbilx emulation for 64-bit guests
  KVM: PPC64: booke: Set interrupt computation mode for 64-bit host
  KVM: PPC: bookehv: Add ESR flag to Data Storage Interrupt
  KVM: PPC: bookehv64: Add support for std/ld emulation.
  booke: Added crit/mc exception handler for e500v2
  booke/bookehv: Add host crit-watchdog exception support
  KVM: MMU: document mmu-lock and fast page fault
  KVM: MMU: fix kvm_mmu_pagetable_walk tracepoint
  KVM: MMU: trace fast page fault
  KVM: MMU: fast path of handling guest page fault
  KVM: MMU: introduce SPTE_MMU_WRITEABLE bit
  KVM: MMU: fold tlb flush judgement into mmu_spte_update
  ...
2012-07-24 12:01:20 -07:00
Joerg Roedel
395e51f18d Merge branches 'iommu/fixes', 'x86/amd', 'groups', 'arm/tegra' and 'api/domain-attr' into next
Conflicts:
	drivers/iommu/iommu.c
	include/linux/iommu.h
2012-07-23 12:17:00 +02:00
Linus Torvalds
5b160bd426 Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/mce changes from Ingo Molnar:
 "This tree improves the AMD thresholding bank code and includes a
  memory fault signal handling fixlet."

* 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Fix siginfo_t->si_addr value for non-recoverable memory faults
  x86, MCE, AMD: Update copyrights and boilerplate
  x86, MCE, AMD: Give proper names to the thresholding banks
  x86, MCE, AMD: Make error_count read only
  x86, MCE, AMD: Cleanup reading of error_count
  x86, MCE, AMD: Print decimal thresholding values
  x86, MCE, AMD: Move shared bank to node descriptor
  x86, MCE, AMD: Remove local_allocate_... wrapper
  x86, MCE, AMD: Remove shared banks sysfs linking
  x86, amd_nb: Export model 0x10 and later PCI id
2012-07-22 16:07:45 -07:00
Linus Torvalds
2bd3488fcf Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/uv changes from Ingo Molnar:
 "UV2 BAU productization fixes.

  The BAU (Broadcast Assist Unit) is SGI's fancy out of line way on UV
  hardware to do TLB flushes, instead of the normal APIC IPI methods.
  The commits here fix / work around hangs in their latest hardware
  iteration (UV2).

  My understanding is that the main purpose of the out of line
  signalling channel is to improve scalability: the UV APIC hardware
  glue does not handle broadcasting to many CPUs very well, and this
  matters most for TLB shootdowns.

  [ I don't agree with all aspects of the current approach: in hindsight
    it would have been better to link the BAU at the IPI/APIC driver
    level instead of the TLB shootdown level, where TLB flushes are
    really just one of the uses of broadcast SMP messages.  Doing that
    would improve scalability in some other ways and it would also
    remove a few uglies from the TLB path.  It would also be nice to
    push more is_uv_system() tests into proper x86_init or x86_platform
    callbacks.  Cliff? ]"

* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/uv: Work around UV2 BAU hangs
  x86/uv: Implement UV BAU runtime enable and disable control via /proc/sgi_uv/
  x86/uv: Fix the UV BAU destination timeout period
2012-07-22 12:37:15 -07:00
Linus Torvalds
d5d96ed2d8 Merge branch 'x86-reboot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/reboot changes from Ingo Molnar:
 "Now that the revampted x86 real-mode trampoline code is upstream and
  seems to be working well, we can extend the 64-bit reboot code to be
  as capable as the 32-bit one."

* 'x86-reboot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86-64, reboot: Be more paranoid in 64-bit reboot=bios
  x86, reboot: Drop redundant write of reboot_mode
  x86-64, reboot: Allow reboot=bios and reboot-cpu override on x86-64
2012-07-22 12:25:47 -07:00
Linus Torvalds
bd3e57f913 Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform changes from Ingo Molnar:
 "This tree mostly involves various APIC driver cleanups/robustization,
  and vSMP motivated platform callback improvements/cleanups"

Fix up trivial conflict due to printk cleanup right next to return value
change.

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (29 commits)
  Revert "x86/early_printk: Replace obsolete simple_strtoul() usage with kstrtoint()"
  x86/apic/x2apic: Use multiple cluster members for the irq destination only with the explicit affinity
  x86/apic/x2apic: Limit the vector reservation to the user specified mask
  x86/apic: Optimize cpu traversal in __assign_irq_vector() using domain membership
  x86/vsmp: Fix vector_allocation_domain's return value
  irq/apic: Use config_enabled(CONFIG_SMP) checks to clean up irq_set_affinity() for UP
  x86/vsmp: Fix linker error when CONFIG_PROC_FS is not set
  x86/apic/es7000: Make apicid of a cluster (not CPU) from a cpumask
  x86/apic/es7000+summit: Always make valid apicid from a cpumask
  x86/apic/es7000+summit: Fix compile warning in cpu_mask_to_apicid()
  x86/apic: Fix ugly casting and branching in cpu_mask_to_apicid_and()
  x86/apic: Eliminate cpu_mask_to_apicid() operation
  x86/x2apic/cluster: Vector_allocation_domain() should return a value
  x86/apic/irq_remap: Silence a bogus pr_err()
  x86/vsmp: Ignore IOAPIC IRQ affinity if possible
  x86/apic: Make cpu_mask_to_apicid() operations check cpu_online_mask
  x86/apic: Make cpu_mask_to_apicid() operations return error code
  x86/apic: Avoid useless scanning thru a cpumask in assign_irq_vector()
  x86/apic: Try to spread IRQ vectors to different priority levels
  x86/apic: Factor out default vector_allocation_domain() operation
  ...
2012-07-22 12:19:36 -07:00
Linus Torvalds
3fad0953a1 Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull debug-for-linus git tree from Ingo Molnar.

Fix up trivial conflict in arch/x86/kernel/cpu/perf_event_intel.c due to
a printk() having changed to a pr_info() differently in the two branches.

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Move call to print_modules() out of show_regs()
  x86/mm: Mark free_initrd_mem() as __init
  x86/microcode: Mark microcode_id[] as __initconst
  x86/nmi: Clean up register_nmi_handler() usage
  x86: Save cr2 in NMI in case NMIs take a page fault (for i386)
  x86: Remove cmpxchg from i386 NMI nesting code
  x86: Save cr2 in NMI in case NMIs take a page fault
  x86/debug: Add KERN_<LEVEL> to bare printks, convert printks to pr_<level>
2012-07-22 12:04:44 -07:00
Linus Torvalds
a065de0d25 Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/asm changes from Ingo Molnar:
 "Assorted single-commit improvements, as usual"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/mtrr: Slightly simplify print_mtrr_state()
  x86/mm/mtrr: Fix alignment determination in range_to_mtrr()
  x86/copy_user_generic: Optimize copy_user_generic with CPU erms feature
  x86/alternatives: Use atomic_xchg() instead atomic_dec_and_test() for stop_machine_text_poke()
2012-07-22 11:42:28 -07:00
Linus Torvalds
55acdddbac Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull smp/hotplug changes from Ingo Molnar:
 "Various cleanups to the SMP hotplug code - a continuing effort of
  Thomas et al"

* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  smpboot: Remove leftover declaration
  smp: Remove num_booting_cpus()
  smp: Remove ipi_call_lock[_irq]()/ipi_call_unlock[_irq]()
  POWERPC: Smp: remove call to ipi_call_lock()/ipi_call_unlock()
  SPARC: SMP: Remove call to ipi_call_lock_irq()/ipi_call_unlock_irq()
  ia64: SMP: Remove call to ipi_call_lock_irq()/ipi_call_unlock_irq()
  x86-smp-remove-call-to-ipi_call_lock-ipi_call_unlock
  tile: SMP: Remove call to ipi_call_lock()/ipi_call_unlock()
  S390: Smp: remove call to ipi_call_lock()/ipi_call_unlock()
  parisc: Smp: remove call to ipi_call_lock()/ipi_call_unlock()
  mn10300: SMP: Remove call to ipi_call_lock()/ipi_call_unlock()
  hexagon: SMP: Remove call to ipi_call_lock()/ipi_call_unlock()
2012-07-22 11:22:15 -07:00
Matt Fleming
9ca8f72a92 x86, efi: Handover Protocol
As things currently stand, traditional EFI boot loaders and the EFI
boot stub are carrying essentially the same initialisation code
required to setup an EFI machine for booting a kernel. There's really
no need to have this code in two places and the hope is that, with
this new protocol, initialisation and booting of the kernel can be
left solely to the kernel's EFI boot stub. The responsibilities of the
boot loader then become,

   o Loading the kernel image from boot media

File system code still needs to be carried by boot loaders for the
scenario where the kernel and initrd files reside on a file system
that the EFI firmware doesn't natively understand, such as ext4, etc.

   o Providing a user interface

Boot loaders still need to display any menus/interfaces, for example
to allow the user to select from a list of kernels.

Bump the boot protocol number because we added the 'handover_offset'
field to indicate the location of the handover protocol entry point.

Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Peter Jones <pjones@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Acked-and-Tested-by: Matthew Garrett <mjg@redhat.com>
Link: http://lkml.kernel.org/r/1342689828-16815-1-git-send-email-matt@console-pimps.org
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-07-20 16:18:58 -07:00
Alex Shi
7efa1c8796 x86/tlb: Fix build warning and crash when building for !SMP
The incompatible parameter of flush_tlb_mm_range cause build warning.
Fix it by correct parameter.

Ingo Molnar found that this could also cause a user space crash.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Alex Shi <alex.shi@intel.com>
Link: http://lkml.kernel.org/r/1342747103-19765-1-git-send-email-alex.shi@intel.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-07-20 15:01:48 -07:00
H. Peter Anvin
30d5c4546a x86, cpufeature: Add the RDSEED and ADX features
Add the RDSEED and ADX features documented in section 9.1 of the Intel
Architecture Instruction Set Extensions Programming Reference,
document 319433, version 013b, available from
http://software.intel.com/en-us/avx/

The PREFETCHW bit is already supported in Linux under the name
3DNOWPREFETCH.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-lgr6482ufk1bvxzvc2hr8qbp@git.kernel.org
2012-07-20 13:36:41 -07:00
Michael S. Tsirkin
1a577b7247 KVM: fix race with level interrupts
When more than 1 source id is in use for the same GSI, we have the
following race related to handling irq_states race:

CPU 0 clears bit 0. CPU 0 read irq_state as 0. CPU 1 sets level to 1.
CPU 1 calls kvm_ioapic_set_irq(1). CPU 0 calls kvm_ioapic_set_irq(0).
Now ioapic thinks the level is 0 but irq_state is not 0.

Fix by performing all irq_states bitmap handling under pic/ioapic lock.
This also removes the need for atomics with irq_states handling.

Reported-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-07-20 16:12:00 -03:00
Liu, Jinsong
cef12ee52b xen/mce: Add mcelog support for Xen platform
When MCA error occurs, it would be handled by Xen hypervisor first,
and then the error information would be sent to initial domain for logging.

This patch gets error information from Xen hypervisor and convert
Xen format error into Linux format mcelog. This logic is basically
self-contained, not touching other kernel components.

By using tools like mcelog tool users could read specific error information,
like what they did under native Linux.

To test follow directions outlined in Documentation/acpi/apei/einj.txt

Acked-and-tested-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Ke, Liping <liping.ke@intel.com>
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-07-19 15:51:36 -04:00
Michael S. Tsirkin
ebf7d2e993 Revert "apic: fix kvm build on UP without IOAPIC"
This reverts commit f9808b7fd4.
After commit 'kvm: switch to apic_set_eoi_write, apic_write'
the stubs are no longer needed as kvm does not look at apicdrivers anymore.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-16 12:51:56 +03:00
Michael S. Tsirkin
1551df646d apic: add apic_set_eoi_write for PV use
KVM PV EOI optimization overrides eoi_write apic op with its own
version. Add an API for this to avoid meddling with core x86 apic driver
data structures directly.

For KVM use, we don't need any guarantees about when the switch to the
new op will take place, so it could in theory use this API after SMP init,
but it currently doesn't, and restricting callers to early init makes it
clear that it's safe as it won't race with actual APIC driver use.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-16 12:51:23 +03:00
Mao, Junjie
ad756a1603 KVM: VMX: Implement PCID/INVPCID for guests with EPT
This patch handles PCID/INVPCID for guests.

Process-context identifiers (PCIDs) are a facility by which a logical processor
may cache information for multiple linear-address spaces so that the processor
may retain cached information when software switches to a different linear
address space. Refer to section 4.10.1 in IA32 Intel Software Developer's Manual
Volume 3A for details.

For guests with EPT, the PCID feature is enabled and INVPCID behaves as running
natively.
For guests without EPT, the PCID feature is disabled and INVPCID triggers #UD.

Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-12 13:07:34 +03:00
Prarit Bhargava
fc73373b33 KVM: Add x86_hyper_kvm to complete detect_hypervisor_platform check
While debugging I noticed that unlike all the other hypervisor code in the
kernel, kvm does not have an entry for x86_hyper which is used in
detect_hypervisor_platform() which results in a nice printk in the
syslog.  This is only really a stub function but it
does make kvm more consistent with the other hypervisors.


Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Marcelo Tostatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-11 19:33:32 +03:00
Ingo Molnar
92254d3144 Linux 3.5-rc6
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 Version: GnuPG v2.0.18 (GNU/Linux)
 
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 KzPv31jXgJGZDy1UqmpKtJ7GDwb92AhqZxVnJimMa+6d1uA8NsZQq5EMOPPiX8Qi
 8P4AEaw5kSMmR/6zxsxguCGdbDLU3xZ1nJZkHyMgjo2UJbMU0jBPneb/79heWPhe
 0HOkLzN5VA6Yx3Nt70sWQ1zsuj0Ji5jCGO0iNTCBmTiv4J9ZlOx3xJQn4aK6JscO
 /3QRTM43GG0j6zToEOCTHrn8ajOq6rHQQkG0bPVR723nFrSGLoaCT6QVBXYug+AZ
 9Xay7zVNvrq2oH5x5jADG2t2vyaG+nEJpSrVjXznzxgDnK7tWjYqiuG5zqKhAq8=
 =IMfr
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Merge tag 'v3.5-rc6' into x86/mce

Merge Linux 3.5-rc6 before merging more code.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-11 09:41:37 +02:00
Avi Kivity
cbd27ee783 KVM: x86 emulator: initialize memop
memop is not initialized; this can lead to a two-byte operation
following a 4-byte operation to see garbage values.  Usually
truncation fixes things fot us later on, but at least in one case
(call abs) it doesn't.

Fix by moving memop to the auto-initialized field area.

Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-09 14:19:02 +03:00
Avi Kivity
0017f93a27 KVM: x86 emulator: change ->get_cpuid() accessor to use the x86 semantics
Instead of getting an exact leaf, follow the spec and fall back to the last
main leaf instead.  This lets us easily emulate the cpuid instruction in the
emulator.

Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-09 14:19:00 +03:00
Suresh Siddha
1ac322d0b1 x86/apic/x2apic: Limit the vector reservation to the user specified mask
For the x2apic cluster mode, vector for an interrupt is
currently reserved on all the cpu's that are part of the x2apic
cluster. But the interrupts will be routed only to the cluster
(derived from the first cpu in the mask) members specified in
the mask. So there is no need to reserve the vector in the
unused cluster members.

Modify __assign_irq_vector() to reserve the vectors based on the
user specified irq destination mask. If the new mask is a proper
subset of the currently used mask, cleanup the vector allocation
on the unused cpu members.

Also, allow the apic driver to tune the vector domain based on
the affinity mask (which in most cases is the user-specified
mask).

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Alexander Gordeev <agordeev@redhat.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Link: http://lkml.kernel.org/r/1340656709-11423-3-git-send-email-suresh.b.siddha@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-06 11:00:22 +02:00
Suresh Siddha
b39f25a849 x86/apic: Optimize cpu traversal in __assign_irq_vector() using domain membership
Currently __assign_irq_vector() goes through each cpu in the
specified mask until it finds a free vector in all the cpu's
that are part of the same interrupt domain. We visit all the
interrupt domain sibling cpus to reserve the free vector. So,
when we fail to find a free vector in an interrupt domain, it is
safe to continue our search with a cpu belonging to a new
interrupt domain. No need to go through each cpu, if the domain
containing that cpu is already visited.

Use the irq_cfg's old_domain to track the visited domains and
optimize the cpu traversal while finding a free vector in the
given cpumask.

NOTE: We can also optimize the search by using for_each_cpu() and
skip the current cpu, if it is not the first cpu in the mask
returned by the vector_allocation_domain(). But re-using the
cfg->old_domain to track the visited domains will be slightly
faster.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Alexander Gordeev <agordeev@redhat.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Link: http://lkml.kernel.org/r/1340656709-11423-2-git-send-email-suresh.b.siddha@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-06 11:00:21 +02:00
Peter Zijlstra
c93dc84cbe perf/x86: Add a microcode revision check for SNB-PEBS
Recent Intel microcode resolved the SNB-PEBS issues, so conditionally
enable PEBS on SNB hardware depending on the microcode revision.

Thanks to Stephane for figuring out the various microcode revisions.

Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-v3672ziwh9damwqwh1uz3krm@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-05 21:55:57 +02:00
Robert Richter
b1dc3c4820 perf/x86/amd: Unify AMD's generic and family 15h pmus
There is no need for keeping separate pmu structs. We can enable
amd_{get,put}_event_constraints() functions also for family 15h event.

The advantage is that there is only a single pmu struct for all AMD
cpus. This patch introduces functions to setup the pmu to enabe core
performance counters or counter constraints.

Also, cpuid checks are used instead of family checks where
possible. Thus, it enables the code independently of cpu families if
the feature flag is set.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1340217996-2254-4-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-05 21:19:41 +02:00
Robert Richter
15c7ad51ad perf/x86: Rename Intel specific macros
There are macros that are Intel specific and not x86 generic. Rename
them into INTEL_*.

This patch removes X86_PMC_IDX_GENERIC and does:

 $ sed -i -e 's/X86_PMC_MAX_/INTEL_PMC_MAX_/g'           \
         arch/x86/include/asm/kvm_host.h                 \
         arch/x86/include/asm/perf_event.h               \
         arch/x86/kernel/cpu/perf_event.c                \
         arch/x86/kernel/cpu/perf_event_p4.c             \
         arch/x86/kvm/pmu.c
 $ sed -i -e 's/X86_PMC_IDX_FIXED/INTEL_PMC_IDX_FIXED/g' \
         arch/x86/include/asm/perf_event.h               \
         arch/x86/kernel/cpu/perf_event.c                \
         arch/x86/kernel/cpu/perf_event_intel.c          \
         arch/x86/kernel/cpu/perf_event_intel_ds.c       \
         arch/x86/kvm/pmu.c
 $ sed -i -e 's/X86_PMC_MSK_/INTEL_PMC_MSK_/g'           \
         arch/x86/include/asm/perf_event.h               \
         arch/x86/kernel/cpu/perf_event.c

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1340217996-2254-2-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-05 21:19:39 +02:00
Ingo Molnar
b0338e99b2 Merge branch 'x86/cpu' into perf/core
Merge this branch because we changed the wrmsr*_safe() API and there's
a conflict.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-05 21:12:11 +02:00