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Author SHA1 Message Date
Linus Torvalds
cd40fab6db Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 fixes from Ingo Molnar:
 "This has:

   - EFI revert to fix a boot regression
   - early_ioremap() fix for boot failure
   - KASLR fix for possible boot failures
   - EFI fix for corrupted string printing
   - remove a misleading EFI bootup 'failed!' error message

  Unfortunately it's all rather close to the merge window"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/efi: Truncate 64-bit values when calling 32-bit OutputString()
  x86/efi: Delete misleading efi_printk() error message
  Revert "efi/x86: efistub: Move shared dependencies to <asm/efi.h>"
  x86/kaslr: Avoid the setup_data area when picking location
  x86 early_ioremap: Increase FIX_BTMAPS_SLOTS to 8
 2014-09-27 14:23:13 -07:00
Ingo Molnar
29282ac0bd * Revert the static library changes from the merge window since they're 
causing issues for Macbooks and Fedora + Grub2 - Matt Fleming
 
  * Delete the misleading "setup_efi_pci() failed!" message which some
    people are seeing when booting EFI - Matt Fleming
 
  * Fix printing strings from the 32-bit EFI boot stub by only passing
    32-bit addresses to the firmware - Matt Fleming
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Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/urgent

Pull EFI fixes from Matt Fleming:

  * Revert the static library changes from the merge window since they're
    causing issues for Macbooks and Fedora + Grub2 (Matt Fleming)

  * Delete the misleading "setup_efi_pci() failed!" message which some
    people are seeing when booting EFI (Matt Fleming)

  * Fix printing strings from the 32-bit EFI boot stub by only passing
    32-bit addresses to the firmware (Matt Fleming)

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2014-09-25 16:40:08 +02:00
Matt Fleming
84be880560 Revert "efi/x86: efistub: Move shared dependencies to <asm/efi.h>" 
This reverts commit f23cf8bd5c ("efi/x86: efistub: Move shared
dependencies to <asm/efi.h>") as well as the x86 parts of commit
f4f75ad574 ("efi: efistub: Convert into static library").

The road leading to these two reverts is long and winding.

The above two commits were merged during the v3.17 merge window and
turned the common EFI boot stub code into a static library. This
necessitated making some symbols global in the x86 boot stub which
introduced new entries into the early boot GOT.

The problem was that we weren't fixing up the newly created GOT entries
before invoking the EFI boot stub, which sometimes resulted in hangs or
resets. This failure was reported by Maarten on his Macbook pro.

The proposed fix was commit 9cb0e39423 ("x86/efi: Fixup GOT in all
boot code paths"). However, that caused issues for Linus when booting
his Sony Vaio Pro 11. It was subsequently reverted in commit
f3670394c2.

So that leaves us back with Maarten's Macbook pro not booting.

At this stage in the release cycle the least risky option is to revert
the x86 EFI boot stub to the pre-merge window code structure where we
explicitly #include efi-stub-helper.c instead of linking with the static
library. The arm64 code remains unaffected.

We can take another swing at the x86 parts for v3.18.

Conflicts:
	arch/x86/include/asm/efi.h

Tested-by: Josh Boyer <jwboyer@fedoraproject.org>
Tested-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org> [arm64]
Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
 2014-09-23 22:01:55 +01:00
Linus Torvalds
7a5e87867e Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 fixes from Ingo Molnar:
 "Misc fixes:

  EFI fixes, a build fix, a page table dumping (debug) fix and a clang
  build fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/arm64: Fix fdt-related memory reservation
  x86/mm: Apply the section attribute to the variable, not its type
  x86/efi: Fixup GOT in all boot code paths
  x86/efi: Only load initrd above 4g on second try
  x86-64, ptdump: Mark espfix area only if existent
  x86, irq: Fix build error caused by 9eabc99a63
 2014-09-19 09:07:47 -07:00
Ingo Molnar
43657ffb79 * Increase the number of early_ioremap slots to fix a regression with 
earlyprintk=efi after recent changes to the ACPI code - Dave Young
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Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/urgent

Pull EFI fix from Matt Fleming:

  * Increase the number of early_ioremap() slots to fix a regression with
    earlyprintk=efi after recent changes to the ACPI code (Dave Young)

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2014-09-19 12:49:20 +02:00
Dave Young
3eddc69ffe x86 early_ioremap: Increase FIX_BTMAPS_SLOTS to 8 
3.16 kernel boot fail with earlyprintk=efi, it keeps scrolling at the
bottom line of screen.

Bisected, the first bad commit is below:
commit 86dfc6f339
Author: Lv Zheng <lv.zheng@intel.com>
Date:   Fri Apr 4 12:38:57 2014 +0800

    ACPICA: Tables: Fix table checksums verification before installation.

I did some debugging by enabling both serial and efi earlyprintk, below is
some debug dmesg, seems early_ioremap fails in scroll up function due to
no free slot, see below dmesg output:

  WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:116 __early_ioremap+0x90/0x1c4()
  __early_ioremap(ed00c800, 00000c80) not found slot
  Modules linked in:
  CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-rc1+ #204
  Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/09/2013
  Call Trace:
    dump_stack+0x4e/0x7a
    warn_slowpath_common+0x75/0x8e
    ? __early_ioremap+0x90/0x1c4
    warn_slowpath_fmt+0x47/0x49
    __early_ioremap+0x90/0x1c4
    ? sprintf+0x46/0x48
    early_ioremap+0x13/0x15
    early_efi_map+0x24/0x26
    early_efi_scroll_up+0x6d/0xc0
    early_efi_write+0x1b0/0x214
    call_console_drivers.constprop.21+0x73/0x7e
    console_unlock+0x151/0x3b2
    ? vprintk_emit+0x49f/0x532
    vprintk_emit+0x521/0x532
    ? console_unlock+0x383/0x3b2
    printk+0x4f/0x51
    acpi_os_vprintf+0x2b/0x2d
    acpi_os_printf+0x43/0x45
    acpi_info+0x5c/0x63
    ? __acpi_map_table+0x13/0x18
    ? acpi_os_map_iomem+0x21/0x147
    acpi_tb_print_table_header+0x177/0x186
    acpi_tb_install_table_with_override+0x4b/0x62
    acpi_tb_install_standard_table+0xd9/0x215
    ? early_ioremap+0x13/0x15
    ? __acpi_map_table+0x13/0x18
    acpi_tb_parse_root_table+0x16e/0x1b4
    acpi_initialize_tables+0x57/0x59
    acpi_table_init+0x50/0xce
    acpi_boot_table_init+0x1e/0x85
    setup_arch+0x9b7/0xcc4
    start_kernel+0x94/0x42d
    ? early_idt_handlers+0x120/0x120
    x86_64_start_reservations+0x2a/0x2c
    x86_64_start_kernel+0xf3/0x100

Quote reply from Lv.zheng about the early ioremap slot usage in this case:

"""
In early_efi_scroll_up(), 2 mapping entries will be used for the src/dst screen buffer.
In drivers/acpi/acpica/tbutils.c, we've improved the early table loading code in acpi_tb_parse_root_table().
We now need 2 mapping entries:
1. One mapping entry is used for RSDT table mapping. Each RSDT entry contains an address for another ACPI table.
2. For each entry in RSDP, we need another mapping entry to map the table to perform necessary check/override before installing it.

When acpi_tb_parse_root_table() prints something through EFI earlyprintk console, we'll have 4 mapping entries used.
The current 4 slots setting of early_ioremap() seems to be too small for such a use case.
"""

Thus increase the slot to 8 in this patch to fix this issue.
boot-time mappings become 512 page with this patch.

Signed-off-by: Dave Young <dyoung@redhat.com>
Cc: <stable@vger.kernel.org> # v3.16
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
 2014-09-14 15:24:31 +01:00
Linus Torvalds
72d9310460 Make ARCH_HAS_FAST_MULTIPLIER a real config variable 
It used to be an ad-hoc hack defined by the x86 version of
<asm/bitops.h> that enabled a couple of library routines to know whether
an integer multiply is faster than repeated shifts and additions.

This just makes it use the real Kconfig system instead, and makes x86
(which was the only architecture that did this) select the option.

NOTE! Even for x86, this really is kind of wrong.  If we cared, we would
probably not enable this for builds optimized for netburst (P4), where
shifts-and-adds are generally faster than multiplies.  This patch does
*not* change that kind of logic, though, it is purely a syntactic change
with no code changes.

This was triggered by the fact that we have other places that really
want to know "do I want to expand multiples by constants by hand or
not", particularly the hash generation code.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-09-13 11:14:53 -07:00
Linus Torvalds
7ee2d2d671 xen: bug fixes for 3.17-rc4 
- Fix for PVHVM suspend/resume and migration
 - Don't pointlessly retry certain ballooning ops
 - Fix gntalloc when grefs have run out.
 - Fix PV boot if KSALR is enable or very large modules are used.
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Merge tag 'stable/for-linus-3.17-b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull Xen bug fixes from David Vrabel:
 - fix for PVHVM suspend/resume and migration
 - don't pointlessly retry certain ballooning ops
 - fix gntalloc when grefs have run out.
 - fix PV boot if KSALR is enable or very large modules are used.

* tag 'stable/for-linus-3.17-b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: don't copy bogus duplicate entries into kernel page tables
  xen/gntalloc: safely delete grefs in add_grefs() undo path
  xen/gntalloc: fix oops after runnning out of grant refs
  xen/balloon: cancel ballooning if adding new memory failed
  xen/manage: Always freeze/thaw processes when suspend/resuming
 2014-09-11 16:52:29 -07:00
Stefan Bader
0b5a50635f x86/xen: don't copy bogus duplicate entries into kernel page tables 
When RANDOMIZE_BASE (KASLR) is enabled; or the sum of all loaded
modules exceeds 512 MiB, then loading modules fails with a warning
(and hence a vmalloc allocation failure) because the PTEs for the
newly-allocated vmalloc address space are not zero.

  WARNING: CPU: 0 PID: 494 at linux/mm/vmalloc.c:128
           vmap_page_range_noflush+0x2a1/0x360()

This is caused by xen_setup_kernel_pagetables() copying
level2_kernel_pgt into level2_fixmap_pgt, overwriting many non-present
entries.

Without KASLR, the normal kernel image size only covers the first half
of level2_kernel_pgt and module space starts after that.

L4[511]->level3_kernel_pgt[510]->level2_kernel_pgt[  0..255]->kernel
                                                  [256..511]->module
                          [511]->level2_fixmap_pgt[  0..505]->module

This allows 512 MiB of of module vmalloc space to be used before
having to use the corrupted level2_fixmap_pgt entries.

With KASLR enabled, the kernel image uses the full PUD range of 1G and
module space starts in the level2_fixmap_pgt. So basically:

L4[511]->level3_kernel_pgt[510]->level2_kernel_pgt[0..511]->kernel
                          [511]->level2_fixmap_pgt[0..505]->module

And now no module vmalloc space can be used without using the corrupt
level2_fixmap_pgt entries.

Fix this by properly converting the level2_fixmap_pgt entries to MFNs,
and setting level1_fixmap_pgt as read-only.

A number of comments were also using the the wrong L3 offset for
level2_kernel_pgt.  These have been corrected.

Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: stable@vger.kernel.org
 2014-09-10 15:23:42 +01:00
Jiang Liu
f3761db164 x86, irq: Fix build error caused by 9eabc99a63 
Commit 9eabc99a63 causes following build error when
IOAPIC is disabled.
   arch/x86/pci/irq.c: In function 'pirq_disable_irq':
>> arch/x86/pci/irq.c:1259:2: error: implicit declaration of function 'mp_should_keep_irq' [-Werror=implicit-function-declaration]
     if (io_apic_assign_pci_irqs && !mp_should_keep_irq(&dev->dev) &&
     ^
   cc1: some warnings being treated as errors

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Grant Likely <grant.likely@linaro.org>
Link: http://lkml.kernel.org/r/1409382916-10649-1-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2014-09-01 10:12:03 +02:00
Linus Torvalds
fd5984d7c8 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 fixes from Peter Anvin:
 "One patch to avoid assigning interrupts we don't actually have on
  non-PC platforms, and two patches that addresses bugs in the new
  IOAPIC assignment code"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, irq, PCI: Keep IRQ assignment for runtime power management
  x86: irq: Fix bug in setting IOAPIC pin attributes
  x86: Fix non-PC platform kernel crash on boot due to NULL dereference
 2014-08-29 17:22:27 -07:00
Hugh Dickins
b38af4721f x86,mm: fix pte_special versus pte_numa 
Sasha Levin has shown oopses on ffffea0003480048 and ffffea0003480008 at
mm/memory.c:1132, running Trinity on different 3.16-rc-next kernels:
where zap_pte_range() checks page->mapping to see if PageAnon(page).

Those addresses fit struct pages for pfns d2001 and d2000, and in each
dump a register or a stack slot showed d2001730 or d2000730: pte flags
0x730 are PCD ACCESSED PROTNONE SPECIAL IOMAP; and Sasha's e820 map has
a hole between cfffffff and 100000000, which would need special access.

Commit c46a7c817e ("x86: define _PAGE_NUMA by reusing software bits on
the PMD and PTE levels") has broken vm_normal_page(): a PROTNONE SPECIAL
pte no longer passes the pte_special() test, so zap_pte_range() goes on
to try to access a non-existent struct page.

Fix this by refining pte_special() (SPECIAL with PRESENT or PROTNONE) to
complement pte_numa() (SPECIAL with neither PRESENT nor PROTNONE).  A
hint that this was a problem was that c46a7c817e added pte_numa() test
to vm_normal_page(), and moved its is_zero_pfn() test from slow to fast
path: This was papering over a pte_special() snag when the zero page was
encountered during zap.  This patch reverts vm_normal_page() to how it
was before, relying on pte_special().

It still appears that this patch may be incomplete: aren't there other
places which need to be handling PROTNONE along with PRESENT?  For
example, pte_mknuma() clears _PAGE_PRESENT and sets _PAGE_NUMA, but on a
PROT_NONE area, that would make it pte_special().  This is side-stepped
by the fact that NUMA hinting faults skipped PROT_NONE VMAs and there
are no grounds where a NUMA hinting fault on a PROT_NONE VMA would be
interesting.

Fixes: c46a7c817e ("x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels")
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Tested-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: <stable@vger.kernel.org>	[3.16]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-08-29 16:28:16 -07:00
Jiang Liu
9eabc99a63 x86, irq, PCI: Keep IRQ assignment for runtime power management 
Now IOAPIC driver dynamically allocates IRQ numbers for IOAPIC pins.
We need to keep IRQ assignment for PCI devices during runtime power
management, otherwise it may cause failure of device wakeups.

Commit 3eec595235 "x86, irq, PCI: Keep IRQ assignment for PCI
devices during suspend/hibernation" has fixed the issue for suspend/
hibernation, we also need the same fix for runtime device sleep too.

Fix: https://bugzilla.kernel.org/show_bug.cgi?id=83271
Reported-and-Tested-by: EmanueL Czirai <amanual@openmailbox.org>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: EmanueL Czirai <amanual@openmailbox.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Grant Likely <grant.likely@linaro.org>
Link: http://lkml.kernel.org/r/1409304383-18806-1-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2014-08-29 13:38:00 +02:00
Paolo Bonzini
0d234daf7e Revert "KVM: x86: Increase the number of fixed MTRR regs to 10" 
This reverts commit 682367c494,
which causes 32-bit SMP Windows 7 guests to panic.

SeaBIOS has a limit on the number of MTRRs that it can handle,
and this patch exceeded the limit.  Better revert it.
Thanks to Nadav Amit for debugging the cause.

Cc: stable@nongnu.org
Reported-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2014-08-19 15:12:28 +02:00
Linus Torvalds
49899007b9 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 
Pull idle update from Len Brown:
 "Two Intel-platform-specific updates to intel_idle, and a cosmetic
  tweak to the turbostat utility"

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: tweak whitespace in output format
  intel_idle: Broadwell support
  intel_idle: Disable Baytrail Core and Module C6 auto-demotion
 2014-08-16 09:25:34 -06:00
Len Brown
8c058d53f6 intel_idle: Disable Baytrail Core and Module C6 auto-demotion 
Power efficiency improves on Baytrail (Intel Atom Processor E3000)
when Linux disables C6 auto-demotion.

Based on work by Srinidhi Kasagar <srinidhi.kasagar@intel.com>.

Signed-off-by: Len Brown <len.brown@intel.com>
Cc: x86@kernel.org
 2014-08-15 17:06:14 -04:00
Linus Torvalds
81c02a21b2 Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86/apic updates from Thomas Gleixner:
 "This is a major overhaul to the x86 apic subsystem consisting of the
  following parts:

   - Remove obsolete APIC driver abstractions (David Rientjes)

   - Use the irqdomain facilities to dynamically allocate IRQs for
     IOAPICs.  This is a prerequisite to enable IOAPIC hotplug support,
     and it also frees up wasted vectors (Jiang Liu)

   - Misc fixlets.

  Despite the hickup in Ingos previous pull request - caused by the
  missing fixup for the suspend/resume issue reported by Borislav - I
  strongly recommend that this update finds its way into 3.17.  Some
  history for you:

  This is preparatory work for physical IOAPIC hotplug.  The first
  attempt to support this was done by Yinghai and I shot it down because
  it just added another layer of obscurity and complexity to the already
  existing mess without tackling the underlying shortcomings of the
  current implementation.

  After quite some on- and offlist discussions, I requested that the
  design of this functionality must use generic infrastructure, i.e.
  irq domains, which provide all the mechanisms to dynamically map linux
  interrupt numbers to physical interrupts.

  Jiang picked up the idea and did a great job of consolidating the
  existing interfaces to manage the x86 (IOAPIC) interrupt system by
  utilizing irq domains.

  The testing in tip, Linux-next and inside of Intel on various machines
  did not unearth any oddities until Borislav exposed it to one of his
  oddball machines.  The issue was resolved quickly, but unfortunately
  the fix fell through the cracks and did not hit the tip tree before
  Ingo sent the pull request.  Not entirely Ingos fault, I also assumed
  that the fix was already merged when Ingo asked me whether he could
  send it.

  Nevertheless this work has a proper design, has undergone several
  rounds of review and the final fallout after applying it to tip and
  integrating it into Linux-next has been more than moderate.  It's the
  ground work not only for IOAPIC hotplug, it will also allow us to move
  the lowlevel vector allocation into the irqdomain hierarchy, which
  will benefit other architectures as well.  Patches are posted already,
  but they are on hold for two weeks, see below.

  I really appreciate the competence and responsiveness Jiang has shown
  in course of this endavour.  So I'm sure that any fallout of this will
  be addressed in a timely manner.

  FYI, I'm vanishing for 2 weeks into my annual kids summer camp kitchen
  duty^Wvacation, while you folks are drooling at KS/LinuxCon :) But HPA
  will have a look at the hopefully zero fallout until I'm back"

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits)
  x86, irq, PCI: Keep IRQ assignment for PCI devices during suspend/hibernation
  x86/apic/vsmp: Make is_vsmp_box() static
  x86, apic: Remove enable_apic_mode callback
  x86, apic: Remove setup_portio_remap callback
  x86, apic: Remove multi_timer_check callback
  x86, apic: Replace noop_check_apicid_used
  x86, apic: Remove check_apicid_present callback
  x86, apic: Remove mps_oem_check callback
  x86, apic: Remove smp_callin_clear_local_apic callback
  x86, apic: Replace trampoline physical addresses with defaults
  x86, apic: Remove x86_32_numa_cpu_node callback
  x86: intel-mid: Use the new io_apic interfaces
  x86, vsmp: Remove is_vsmp_box() from apic_is_clustered_box()
  x86, irq: Clean up irqdomain transition code
  x86, irq, devicetree: Release IOAPIC pin when PCI device is disabled
  x86, irq, SFI: Release IOAPIC pin when PCI device is disabled
  x86, irq, mpparse: Release IOAPIC pin when PCI device is disabled
  x86, irq, ACPI: Release IOAPIC pin when PCI device is disabled
  x86, irq: Introduce helper functions to release IOAPIC pin
  x86, irq: Simplify the way to handle ISA IRQ
  ...
 2014-08-13 18:23:32 -06:00
Linus Torvalds
7453f33b2e Merge branch 'x86-xsave-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86/xsave changes from Peter Anvin:
 "This is a patchset to support the XSAVES instruction required to
  support context switch of supervisor-only features in upcoming
  silicon.

  This patchset missed the 3.16 merge window, which is why it is based
  on 3.15-rc7"

* 'x86-xsave-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, xsave: Add forgotten inline annotation
  x86/xsaves: Clean up code in xstate offsets computation in xsave area
  x86/xsave: Make it clear that the XSAVE macros use (%edi)/(%rdi)
  Define kernel API to get address of each state in xsave area
  x86/xsaves: Enable xsaves/xrstors
  x86/xsaves: Call booting time xsaves and xrstors in setup_init_fpu_buf
  x86/xsaves: Save xstate to task's xsave area in __save_fpu during booting time
  x86/xsaves: Add xsaves and xrstors support for booting time
  x86/xsaves: Clear reserved bits in xsave header
  x86/xsaves: Use xsave/xrstor for saving and restoring user space context
  x86/xsaves: Use xsaves/xrstors for context switch
  x86/xsaves: Use xsaves/xrstors to save and restore xsave area
  x86/xsaves: Define a macro for handling xsave/xrstor instruction fault
  x86/xsaves: Define macros for xsave instructions
  x86/xsaves: Change compacted format xsave area header
  x86/alternative: Add alternative_input_2 to support alternative with two features and input
  x86/xsaves: Add a kernel parameter noxsaves to disable xsaves/xrstors
 2014-08-13 18:20:04 -06:00
Vivek Goyal
dd5f726076 kexec: support for kexec on panic using new system call 
This patch adds support for loading a kexec on panic (kdump) kernel usning
new system call.

It prepares ELF headers for memory areas to be dumped and for saved cpu
registers.  Also prepares the memory map for second kernel and limits its
boot to reserved areas only.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: WANG Chao <chaowang@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-08-08 15:57:33 -07:00
Vivek Goyal
27f48d3e63 kexec-bzImage64: support for loading bzImage using 64bit entry 
This is loader specific code which can load bzImage and set it up for
64bit entry.  This does not take care of 32bit entry or real mode entry.

32bit mode entry can be implemented if somebody needs it.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: WANG Chao <chaowang@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-08-08 15:57:33 -07:00
Andy Lutomirski
a6c19dfe39 arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area 
The core mm code will provide a default gate area based on
FIXADDR_USER_START and FIXADDR_USER_END if
!defined(__HAVE_ARCH_GATE_AREA) && defined(AT_SYSINFO_EHDR).

This default is only useful for ia64.  arm64, ppc, s390, sh, tile, 64-bit
UML, and x86_32 have their own code just to disable it.  arm, 32-bit UML,
and x86_64 have gate areas, but they have their own implementations.

This gets rid of the default and moves the code into ia64.

This should save some code on architectures without a gate area: it's now
possible to inline the gate_area functions in the default case.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Nathan Lynch <nathan_lynch@mentor.com>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [in principle]
Acked-by: Richard Weinberger <richard@nod.at> [for um]
Acked-by: Will Deacon <will.deacon@arm.com> [for arm64]
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Nathan Lynch <Nathan_Lynch@mentor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-08-08 15:57:27 -07:00
Laura Abbott
308c09f17d lib/scatterlist: make ARCH_HAS_SG_CHAIN an actual Kconfig 
Rather than have architectures #define ARCH_HAS_SG_CHAIN in an
architecture specific scatterlist.h, make it a proper Kconfig option and
use that instead.  At same time, remove the header files are are now
mostly useless and just include asm-generic/scatterlist.h.

[sfr@canb.auug.org.au: powerpc files now need asm/dma.h]
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>			[x86]
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	[powerpc]
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-08-08 15:57:26 -07:00
Linus Torvalds
7725131982 ACPI and power management updates for 3.17-rc1 
- ACPICA update to upstream version 20140724.  That includes
    ACPI 5.1 material (support for the _CCA and _DSD predefined names,
    changes related to the DMAR and PCCT tables and ARM support among
    other things) and cleanups related to using ACPICA's header files.
    A major part of it is related to acpidump and the core code used
    by that utility.  Changes from Bob Moore, David E Box, Lv Zheng,
    Sascha Wildner, Tomasz Nowicki, Hanjun Guo.
 
  - Radix trees for memory bitmaps used by the hibernation core from
    Joerg Roedel.
 
  - Support for waking up the system from suspend-to-idle (also known
    as the "freeze" sleep state) using ACPI-based PCI wakeup signaling
    (Rafael J Wysocki).
 
  - Fixes for issues related to ACPI button events (Rafael J Wysocki).
 
  - New device ID for an ACPI-enumerated device included into the
    Wildcat Point PCH from Jie Yang.
 
  - ACPI video updates related to backlight handling from Hans de Goede
    and Linus Torvalds.
 
  - Preliminary changes needed to support ACPI on ARM from Hanjun Guo
    and Graeme Gregory.
 
  - ACPI PNP core cleanups from Arjun Sreedharan and Zhang Rui.
 
  - Cleanups related to ACPI_COMPANION() and ACPI_HANDLE() macros
    (Rafael J Wysocki).
 
  - ACPI-based device hotplug cleanups from Wei Yongjun and
    Rafael J Wysocki.
 
  - Cleanups and improvements related to system suspend from
    Lan Tianyu, Randy Dunlap and Rafael J Wysocki.
 
  - ACPI battery cleanup from Wei Yongjun.
 
  - cpufreq core fixes from Viresh Kumar.
 
  - Elimination of a deadband effect from the cpufreq ondemand
    governor and intel_pstate driver cleanups from Stratos Karafotis.
 
  - 350MHz CPU support for the powernow-k6 cpufreq driver from
    Mikulas Patocka.
 
  - Fix for the imx6 cpufreq driver from Anson Huang.
 
  - cpuidle core and governor cleanups from Daniel Lezcano,
    Sandeep Tripathy and Mohammad Merajul Islam Molla.
 
  - Build fix for the big_little cpuidle driver from Sachin Kamat.
 
  - Configuration fix for the Operation Performance Points (OPP)
    framework from Mark Brown.
 
  - APM cleanup from Jean Delvare.
 
  - cpupower utility fixes and cleanups from Peter Senna Tschudin,
    Andrey Utkin, Himangi Saraogi, Rickard Strandqvist, Thomas Renninger.
 
 /
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Merge tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:
 "Again, ACPICA leads the pack (47 commits), followed by cpufreq (18
  commits) and system suspend/hibernation (9 commits).

  From the new code perspective, the ACPICA update brings ACPI 5.1 to
  the table, including a new device configuration object called _DSD
  (Device Specific Data) that will hopefully help us to operate device
  properties like Device Trees do (at least to some extent) and changes
  related to supporting ACPI on ARM.

  Apart from that we have hibernation changes making it use radix trees
  to store memory bitmaps which should speed up some operations carried
  out by it quite significantly.  We also have some power management
  changes related to suspend-to-idle (the "freeze" sleep state) support
  and more preliminary changes needed to support ACPI on ARM (outside of
  ACPICA).

  The rest is fixes and cleanups pretty much everywhere.

  Specifics:

   - ACPICA update to upstream version 20140724.  That includes ACPI 5.1
     material (support for the _CCA and _DSD predefined names, changes
     related to the DMAR and PCCT tables and ARM support among other
     things) and cleanups related to using ACPICA's header files.  A
     major part of it is related to acpidump and the core code used by
     that utility.  Changes from Bob Moore, David E Box, Lv Zheng,
     Sascha Wildner, Tomasz Nowicki, Hanjun Guo.

   - Radix trees for memory bitmaps used by the hibernation core from
     Joerg Roedel.

   - Support for waking up the system from suspend-to-idle (also known
     as the "freeze" sleep state) using ACPI-based PCI wakeup signaling
     (Rafael J Wysocki).

   - Fixes for issues related to ACPI button events (Rafael J Wysocki).

   - New device ID for an ACPI-enumerated device included into the
     Wildcat Point PCH from Jie Yang.

   - ACPI video updates related to backlight handling from Hans de Goede
     and Linus Torvalds.

   - Preliminary changes needed to support ACPI on ARM from Hanjun Guo
     and Graeme Gregory.

   - ACPI PNP core cleanups from Arjun Sreedharan and Zhang Rui.

   - Cleanups related to ACPI_COMPANION() and ACPI_HANDLE() macros
     (Rafael J Wysocki).

   - ACPI-based device hotplug cleanups from Wei Yongjun and Rafael J
     Wysocki.

   - Cleanups and improvements related to system suspend from Lan
     Tianyu, Randy Dunlap and Rafael J Wysocki.

   - ACPI battery cleanup from Wei Yongjun.

   - cpufreq core fixes from Viresh Kumar.

   - Elimination of a deadband effect from the cpufreq ondemand governor
     and intel_pstate driver cleanups from Stratos Karafotis.

   - 350MHz CPU support for the powernow-k6 cpufreq driver from Mikulas
     Patocka.

   - Fix for the imx6 cpufreq driver from Anson Huang.

   - cpuidle core and governor cleanups from Daniel Lezcano, Sandeep
     Tripathy and Mohammad Merajul Islam Molla.

   - Build fix for the big_little cpuidle driver from Sachin Kamat.

   - Configuration fix for the Operation Performance Points (OPP)
     framework from Mark Brown.

   - APM cleanup from Jean Delvare.

   - cpupower utility fixes and cleanups from Peter Senna Tschudin,
     Andrey Utkin, Himangi Saraogi, Rickard Strandqvist, Thomas
     Renninger"

* tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (118 commits)
  ACPI / LPSS: add LPSS device for Wildcat Point PCH
  ACPI / PNP: Replace faulty is_hex_digit() by isxdigit()
  ACPICA: Update version to 20140724.
  ACPICA: ACPI 5.1: Update for PCCT table changes.
  ACPICA/ARM: ACPI 5.1: Update for GTDT table changes.
  ACPICA/ARM: ACPI 5.1: Update for MADT changes.
  ACPICA/ARM: ACPI 5.1: Update for FADT changes.
  ACPICA: ACPI 5.1: Support for the _CCA predifined name.
  ACPICA: ACPI 5.1: New notify value for System Affinity Update.
  ACPICA: ACPI 5.1: Support for the _DSD predefined name.
  ACPICA: Debug object: Add current value of Timer() to debug line prefix.
  ACPICA: acpihelp: Add UUID support, restructure some existing files.
  ACPICA: Utilities: Fix local printf issue.
  ACPICA: Tables: Update for DMAR table changes.
  ACPICA: Remove some extraneous printf arguments.
  ACPICA: Update for comments/formatting. No functional changes.
  ACPICA: Disassembler: Add support for the ToUUID opererator (macro).
  ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro.
  ACPICA: Work around an ancient GCC bug.
  ACPI / processor: Make it possible to get local x2apic id via _MAT
  ...
 2014-08-06 20:34:19 -07:00
Linus Torvalds
930e0312bc sound updates for 3.17-rc1 
There've been many updates in ASoC side at this time, especially the
 framework enhancement for multiple CODECs on a single DAI and more
 componentization works.  The only major change in ALSA core is the
 addition of timestamp type in sw_params field.  This should behave in
 backward compatible way.  Other than that, there are lots of small
 changes and new drivers in wide range, including a large code cut in
 HD-audio driver for deprecated static quirks.  Some highlights are
 below:
 
 ALSA Core:
 - Add the new timestamp type field to sw_params to choose
   MONOTONIC_RAW type
 
 HD-audio:
 - Continued conversion to standard printk macros, generic code
   cleanups
 - Removal of obsoleted static quirk codes for Conexant and C-Media
   codecs
 - Fixups for HP Envy TS, Dell XPS 15, HP and Dell mute/mic LED,
   Gigabyte BXBT-2807 mobo
 - Intel Braswell support
 
 ASoC:
 - Support for multiple CODECs attached to a single DAI, enabling
   systems with for example multiple DAC/speaker drivers on a single
  link, contributed by Benoit Cousson based on work from Misael Lopez
  Cruz
 - Support for byte controls larger than 256 bytes based on the use of
   TLVs contributed by Omair Mohammed Abdullah
 - More componentisation work from Lars-Peter Clausen
 - The remainder of the conversions of CODEC drivers to params_width()
   by Mark Brown
 - Drivers for Cirrus Logic CS4265, Freescale i.MX ASRC blocks, Realtek
   RT286 and RT5670, Rockchip RK3xxx I2S controllers and Texas
   Instruments TAS2552
 - Lots of updates and fixes, especially to the DaVinci, Intel,
   Freescale, Realtek, and rcar drivers
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Merge tag 'sound-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "There've been many updates in ASoC side at this time, especially the
  framework enhancement for multiple CODECs on a single DAI and more
  componentization works.

  The only major change in ALSA core is the addition of timestamp type
  in sw_params field.  This should behave in backward compatible way.

  Other than that, there are lots of small changes and new drivers in
  wide range, including a large code cut in HD-audio driver for
  deprecated static quirks.  Some highlights are below:

  ALSA Core:
   - Add the new timestamp type field to sw_params to choose
     MONOTONIC_RAW type

  HD-audio:
   - Continued conversion to standard printk macros, generic code
     cleanups
   - Removal of obsoleted static quirk codes for Conexant and C-Media
     codecs
   - Fixups for HP Envy TS, Dell XPS 15, HP and Dell mute/mic LED,
     Gigabyte BXBT-2807 mobo
   - Intel Braswell support

  ASoC:
   - Support for multiple CODECs attached to a single DAI, enabling
     systems with for example multiple DAC/speaker drivers on a single
     link, contributed by Benoit Cousson based on work from Misael Lopez
     Cruz
   - Support for byte controls larger than 256 bytes based on the use of
     TLVs contributed by Omair Mohammed Abdullah
   - More componentisation work from Lars-Peter Clausen
   - The remainder of the conversions of CODEC drivers to params_width()
     by Mark Brown
   - Drivers for Cirrus Logic CS4265, Freescale i.MX ASRC blocks,
     Realtek RT286 and RT5670, Rockchip RK3xxx I2S controllers and Texas
     Instruments TAS2552
   - Lots of updates and fixes, especially to the DaVinci, Intel,
     Freescale, Realtek, and rcar drivers"

* tag 'sound-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (402 commits)
  ALSA: usb-audio: Whitespace cleanups for sound/usb/midi.*
  ALSA: usb-audio: Respond to suspend and resume callbacks for MIDI input
  sound/oss/pss: Remove typedefs pss_mixerdata and pss_confdata
  sound/oss/opl3: Remove typedef opl_devinfo
  ALSA: fireworks: fix specifiers in format strings for propper output
  ASoC: imx-audmux: Use uintptr_t for port numbers
  ASoC: davinci: Enable menuconfig entry for McASP
  ASoC: fsl_asrc: Don't access members of config before checking it
  ASoC: fsl_sarc_dma: Check pair before using it
  ASoC: adau1977: Fix truncation warning on 64 bit architectures
  ALSA: virtuoso: add Xonar Essence STX II support
  ALSA: riptide: fix %d confusingly prefixed with 0x in format strings
  ALSA: fireworks: fix %d confusingly prefixed with 0x in format strings
  ALSA: hda - add codec ID for Braswell display audio codec
  ALSA: hda - add PCI IDs for Intel Braswell
  ALSA: usb-audio: Adjust Gamecom 780 volume level
  ALSA: usb-audio: improve dmesg source grepability
  ASoC: rt5670: Fix duplicate const warnings
  ASoC: rt5670: Staticise non-exported symbols
  ASoC: Intel: update stream only on stream IPC msgs
  ...
 2014-08-06 20:07:24 -07:00
Linus Torvalds
98a96f2022 Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 vdso updates from Ingo Molnar:
 "Further simplifications and improvements to the VDSO code, by Andy
  Lutomirski"

* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86_64/vsyscall: Fix warn_bad_vsyscall log output
  x86/vdso: Set VM_MAYREAD for the vvar vma
  x86, vdso: Get rid of the fake section mechanism
  x86, vdso: Move the vvar area before the vdso text
 2014-08-04 17:27:47 -07:00
Linus Torvalds
5637a2a3e9 Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 UV TLB update from Ingo Molnar:
 "UV TLB shootdown logic updates for version of the UV architecture"

* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/uv: Update the UV3 TLB shootdown logic
 2014-08-04 17:24:56 -07:00
Linus Torvalds
8556d44fee Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 platform updates from Ingo Molnar:
 "The main changes in this cycle are:

   - Intel SOC driver updates, by Aubrey Li.

   - TS5500 platform updates, by Vivien Didelot"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/pmc_atom: Silence shift wrapping warnings in pmc_sleep_tmr_show()
  x86/pmc_atom: Expose PMC device state and platform sleep state
  x86/pmc_atom: Eisable a few S0ix wake up events for S0ix residency
  x86/platform: New Intel Atom SOC power management controller driver
  x86/platform/ts5500: Add support for TS-5400 boards
  x86/platform/ts5500: Add a 'name' sysfs attribute
  x86/platform/ts5500: Use the DEVICE_ATTR_RO() macro
 2014-08-04 17:20:08 -07:00
Linus Torvalds
ce47479632 Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 mm changes from Ingo Molnar:
 "The main change in this cycle is the rework of the TLB range flushing
  code, to simplify, fix and consolidate the code.  By Dave Hansen"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Set TLB flush tunable to sane value (33)
  x86/mm: New tunable for single vs full TLB flush
  x86/mm: Add tracepoints for TLB flushes
  x86/mm: Unify remote INVLPG code
  x86/mm: Fix missed global TLB flush stat
  x86/mm: Rip out complicated, out-of-date, buggy TLB flushing
  x86/mm: Clean up the TLB flushing code
  x86/smep: Be more informative when signalling an SMEP fault
 2014-08-04 17:15:45 -07:00
Linus Torvalds
76f09aa464 Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull EFI changes from Ingo Molnar:
 "Main changes in this cycle are:

   - arm64 efi stub fixes, preservation of FP/SIMD registers across
     firmware calls, and conversion of the EFI stub code into a static
     library - Ard Biesheuvel

   - Xen EFI support - Daniel Kiper

   - Support for autoloading the efivars driver - Lee, Chun-Yi

   - Use the PE/COFF headers in the x86 EFI boot stub to request that
     the stub be loaded with CONFIG_PHYSICAL_ALIGN alignment - Michael
     Brown

   - Consolidate all the x86 EFI quirks into one file - Saurabh Tangri

   - Additional error logging in x86 EFI boot stub - Ulf Winkelvos

   - Support loading initrd above 4G in EFI boot stub - Yinghai Lu

   - EFI reboot patches for ACPI hardware reduced platforms"

* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
  efi/arm64: Handle missing virtual mapping for UEFI System Table
  arch/x86/xen: Silence compiler warnings
  xen: Silence compiler warnings
  x86/efi: Request desired alignment via the PE/COFF headers
  x86/efi: Add better error logging to EFI boot stub
  efi: Autoload efivars
  efi: Update stale locking comment for struct efivars
  arch/x86: Remove efi_set_rtc_mmss()
  arch/x86: Replace plain strings with constants
  xen: Put EFI machinery in place
  xen: Define EFI related stuff
  arch/x86: Remove redundant set_bit(EFI_MEMMAP) call
  arch/x86: Remove redundant set_bit(EFI_SYSTEM_TABLES) call
  efi: Introduce EFI_PARAVIRT flag
  arch/x86: Do not access EFI memory map if it is not available
  efi: Use early_mem*() instead of early_io*()
  arch/ia64: Define early_memunmap()
  x86/reboot: Add EFI reboot quirk for ACPI Hardware Reduced flag
  efi/reboot: Allow powering off machines using EFI
  efi/reboot: Add generic wrapper around EfiResetSystem()
  ...
 2014-08-04 17:13:50 -07:00
Linus Torvalds
e9c9eecaba Merge branch 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 cpufeature updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Continued cleanups of CPU bugs mis-marked as 'missing features', by
     Borislav Petkov.

   - Detect the xsaves/xrstors feature and releated cleanup, by Fenghua
     Yu"

* 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, cpu: Kill cpu_has_mp
  x86, amd: Cleanup init_amd
  x86/cpufeature: Add bug flags to /proc/cpuinfo
  x86, cpufeature: Convert more "features" to bugs
  x86/xsaves: Detect xsaves/xrstors feature
  x86/cpufeature.h: Reformat x86 feature macros
 2014-08-04 17:12:45 -07:00
Linus Torvalds
19d402c1e7 Merge branches 'x86-build-for-linus', 'x86-cleanups-for-linus' and 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 build/cleanup/debug updates from Ingo Molnar:
 "Robustify the build process with a quirk to avoid GCC reordering
  related bugs.

  Two code cleanups.

  Simplify entry_64.S CFI annotations, by Jan Beulich"

* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, build: Change code16gcc.h from a C header to an assembly header

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Simplify __HAVE_ARCH_CMPXCHG tests
  x86/tsc: Get rid of custom DIV_ROUND() macro

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/debug: Drop several unnecessary CFI annotations
 2014-08-04 16:56:16 -07:00
Linus Torvalds
ef35ad26f8 Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull perf changes from Ingo Molnar:
 "Kernel side changes:

   - Consolidate the PMU interrupt-disabled code amongst architectures
     (Vince Weaver)

   - misc fixes

  Tooling changes (new features, user visible changes):

   - Add support for pagefault tracing in 'trace', please see multiple
     examples in the changeset messages (Stanislav Fomichev).

   - Add pagefault statistics in 'trace' (Stanislav Fomichev)

   - Add header for columns in 'top' and 'report' TUI browsers (Jiri
     Olsa)

   - Add pagefault statistics in 'trace' (Stanislav Fomichev)

   - Add IO mode into timechart command (Stanislav Fomichev)

   - Fallback to syscalls:* when raw_syscalls:* is not available in the
     perl and python perf scripts.  (Daniel Bristot de Oliveira)

   - Add --repeat global option to 'perf bench' to be used in benchmarks
     such as the existing 'futex' one, that was modified to use it
     instead of a local option.  (Davidlohr Bueso)

   - Fix fd -> pathname resolution in 'trace', be it using /proc or a
     vfs_getname probe point.  (Arnaldo Carvalho de Melo)

   - Add suggestion of how to set perf_event_paranoid sysctl, to help
     non-root users trying tools like 'trace' to get a working
     environment.  (Arnaldo Carvalho de Melo)

   - Updates from trace-cmd for traceevent plugin_kvm plus args cleanup
     (Steven Rostedt, Jan Kiszka)

   - Support S/390 in 'perf kvm stat' (Alexander Yarygin)

  Tooling infrastructure changes:

   - Allow reserving a row for header purposes in the hists browser
     (Arnaldo Carvalho de Melo)

   - Various fixes and prep work related to supporting Intel PT (Adrian
     Hunter)

   - Introduce multiple debug variables control (Jiri Olsa)

   - Add callchain and additional sample information for python scripts
     (Joseph Schuchart)

   - More prep work to support Intel PT: (Adrian Hunter)
     - Polishing 'script' BTS output
     - 'inject' can specify --kallsym
     - VDSO is per machine, not a global var
     - Expose data addr lookup functions previously private to 'script'
     - Large mmap fixes in events processing

   - Include standard stringify macros in power pc code (Sukadev
     Bhattiprolu)

  Tooling cleanups:

   - Convert open coded equivalents to asprintf() (Andy Shevchenko)

   - Remove needless reassignments in 'trace' (Arnaldo Carvalho de Melo)

   - Cache the is_exit syscall test in 'trace) (Arnaldo Carvalho de
     Melo)

   - No need to reimplement err() in 'perf bench sched-messaging', drop
     barf().  (Davidlohr Bueso).

   - Remove ev_name argument from perf_evsel__hists_browse, can be
     obtained from the other parameters.  (Jiri Olsa)

  Tooling fixes:

   - Fix memory leak in the 'sched-messaging' perf bench test.
     (Davidlohr Bueso)

   - The -o and -n 'perf bench mem' options are mutually exclusive, emit
     error when both are specified.  (Davidlohr Bueso)

   - Fix scrollbar refresh row index in the ui browser, problem exposed
     now that headers will be added and will be allowed to be switched
     on/off.  (Jiri Olsa)

   - Handle the num array type in python properly (Sebastian Andrzej
     Siewior)

   - Fix wrong condition for allocation failure (Jiri Olsa)

   - Adjust callchain based on DWARF debug info on powerpc (Sukadev
     Bhattiprolu)

   - Fix a risk for doing free on uninitialized pointer in traceevent
     lib (Rickard Strandqvist)

   - Update attr test with PERF_FLAG_FD_CLOEXEC flag (Jiri Olsa)

   - Enable close-on-exec flag on perf file descriptor (Yann Droneaud)

   - Fix build on gcc 4.4.7 (Arnaldo Carvalho de Melo)

   - Event ordering fixes (Jiri Olsa)"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (123 commits)
  Revert "perf tools: Fix jump label always changing during tracing"
  perf tools: Fix perf usage string leftover
  perf: Check permission only for parent tracepoint event
  perf record: Store PERF_RECORD_FINISHED_ROUND only for nonempty rounds
  perf record: Always force PERF_RECORD_FINISHED_ROUND event
  perf inject: Add --kallsyms parameter
  perf tools: Expose 'addr' functions so they can be reused
  perf session: Fix accounting of ordered samples queue
  perf powerpc: Include util/util.h and remove stringify macros
  perf tools: Fix build on gcc 4.4.7
  perf tools: Add thread parameter to vdso__dso_findnew()
  perf tools: Add dso__type()
  perf tools: Separate the VDSO map name from the VDSO dso name
  perf tools: Add vdso__new()
  perf machine: Fix the lifetime of the VDSO temporary file
  perf tools: Group VDSO global variables into a structure
  perf session: Add ability to skip 4GiB or more
  perf session: Add ability to 'skip' a non-piped event stream
  perf tools: Pass machine to vdso__dso_findnew()
  perf tools: Add dso__data_size()
  ...
 2014-08-04 16:09:53 -07:00
Linus Torvalds
8efb90cf1e Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull locking updates from Ingo Molnar:
 "The main changes in this cycle are:

   - big rtmutex and futex cleanup and robustification from Thomas
     Gleixner
   - mutex optimizations and refinements from Jason Low
   - arch_mutex_cpu_relax() removal and related cleanups
   - smaller lockdep tweaks"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  arch, locking: Ciao arch_mutex_cpu_relax()
  locking/lockdep: Only ask for /proc/lock_stat output when available
  locking/mutexes: Optimize mutex trylock slowpath
  locking/mutexes: Try to acquire mutex only if it is unlocked
  locking/mutexes: Delete the MUTEX_SHOW_NO_WAITER macro
  locking/mutexes: Correct documentation on mutex optimistic spinning
  rtmutex: Make the rtmutex tester depend on BROKEN
  futex: Simplify futex_lock_pi_atomic() and make it more robust
  futex: Split out the first waiter attachment from lookup_pi_state()
  futex: Split out the waiter check from lookup_pi_state()
  futex: Use futex_top_waiter() in lookup_pi_state()
  futex: Make unlock_pi more robust
  rtmutex: Avoid pointless requeueing in the deadlock detection chain walk
  rtmutex: Cleanup deadlock detector debug logic
  rtmutex: Confine deadlock logic to futex
  rtmutex: Simplify remove_waiter()
  rtmutex: Document pi chain walk
  rtmutex: Clarify the boost/deboost part
  rtmutex: No need to keep task ref for lock owner check
  rtmutex: Simplify and document try_to_take_rtmutex()
  ...
 2014-08-04 16:09:06 -07:00
Linus Torvalds
8533ce7271 These are the x86, MIPS and s390 changes; PPC and ARM will come in a 
few days.
 
 MIPS and s390 have little going on this release; just bugfixes, some
 small, some larger.
 
 The highlights for x86 are nested VMX improvements (Jan Kiszka), optimizations
 for old processor (up to Nehalem, by me and Bandan Das), and a lot of x86
 emulator bugfixes (Nadav Amit).
 
 Stephen Rothwell reported a trivial conflict with the tracing branch.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM changes from Paolo Bonzini:
 "These are the x86, MIPS and s390 changes; PPC and ARM will come in a
  few days.

  MIPS and s390 have little going on this release; just bugfixes, some
  small, some larger.

  The highlights for x86 are nested VMX improvements (Jan Kiszka),
  optimizations for old processor (up to Nehalem, by me and Bandan Das),
  and a lot of x86 emulator bugfixes (Nadav Amit).

  Stephen Rothwell reported a trivial conflict with the tracing branch"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (104 commits)
  x86/kvm: Resolve shadow warnings in macro expansion
  KVM: s390: rework broken SIGP STOP interrupt handling
  KVM: x86: always exit on EOIs for interrupts listed in the IOAPIC redir table
  KVM: vmx: remove duplicate vmx_mpx_supported() prototype
  KVM: s390: Fix memory leak on busy SIGP stop
  x86/kvm: Resolve shadow warning from min macro
  kvm: Resolve missing-field-initializers warnings
  Replace NR_VMX_MSR with its definition
  KVM: x86: Assertions to check no overrun in MSR lists
  KVM: x86: set rflags.rf during fault injection
  KVM: x86: Setting rflags.rf during rep-string emulation
  KVM: x86: DR6/7.RTM cannot be written
  KVM: nVMX: clean up nested_release_vmcs12 and code around it
  KVM: nVMX: fix lifetime issues for vmcs02
  KVM: x86: Defining missing x86 vectors
  KVM: x86: emulator injects #DB when RFLAGS.RF is set
  KVM: x86: Cleanup of rflags.rf cleaning
  KVM: x86: Clear rflags.rf on emulated instructions
  KVM: x86: popf emulation should not change RF
  KVM: x86: Clearing rflags.rf upon skipped emulated instruction
  ...
 2014-08-04 12:16:46 -07:00
Linus Torvalds
b8c0aa46b3 This pull request has a lot of work done. The main thing is the changes 
to the ftrace function callback infrastructure. It's introducing a
 way to allow different functions to call directly different trampolines
 instead of all calling the same "mcount" one.
 
 The only user of this for now is the function graph tracer, which always
 had a different trampoline, but the function tracer trampoline was called
 and did basically nothing, and then the function graph tracer trampoline
 was called. The difference now, is that the function graph tracer
 trampoline can be called directly if a function is only being traced by
 the function graph trampoline. If function tracing is also happening on
 the same function, the old way is still done.
 
 The accounting for this takes up more memory when function graph tracing
 is activated, as it needs to keep track of which functions it uses.
 I have a new way that wont take as much memory, but it's not ready yet
 for this merge window, and will have to wait for the next one.
 
 Another big change was the removal of the ftrace_start/stop() calls that
 were used by the suspend/resume code that stopped function tracing when
 entering into suspend and resume paths. The stop of ftrace was done
 because there was some function that would crash the system if one called
 smp_processor_id()! The stop/start was a big hammer to solve the issue
 at the time, which was when ftrace was first introduced into Linux.
 Now ftrace has better infrastructure to debug such issues, and I found
 the problem function and labeled it with "notrace" and function tracing
 can now safely be activated all the way down into the guts of suspend
 and resume.
 
 Other changes include clean ups of uprobe code.
 Clean up of the trace_seq() code.
 And other various small fixes and clean ups to ftrace and tracing.
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Merge tag 'trace-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "This pull request has a lot of work done.  The main thing is the
  changes to the ftrace function callback infrastructure.  It's
  introducing a way to allow different functions to call directly
  different trampolines instead of all calling the same "mcount" one.

  The only user of this for now is the function graph tracer, which
  always had a different trampoline, but the function tracer trampoline
  was called and did basically nothing, and then the function graph
  tracer trampoline was called.  The difference now, is that the
  function graph tracer trampoline can be called directly if a function
  is only being traced by the function graph trampoline.  If function
  tracing is also happening on the same function, the old way is still
  done.

  The accounting for this takes up more memory when function graph
  tracing is activated, as it needs to keep track of which functions it
  uses.  I have a new way that wont take as much memory, but it's not
  ready yet for this merge window, and will have to wait for the next
  one.

  Another big change was the removal of the ftrace_start/stop() calls
  that were used by the suspend/resume code that stopped function
  tracing when entering into suspend and resume paths.  The stop of
  ftrace was done because there was some function that would crash the
  system if one called smp_processor_id()! The stop/start was a big
  hammer to solve the issue at the time, which was when ftrace was first
  introduced into Linux.  Now ftrace has better infrastructure to debug
  such issues, and I found the problem function and labeled it with
  "notrace" and function tracing can now safely be activated all the way
  down into the guts of suspend and resume

  Other changes include clean ups of uprobe code, clean up of the
  trace_seq() code, and other various small fixes and clean ups to
  ftrace and tracing"

* tag 'trace-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (57 commits)
  ftrace: Add warning if tramp hash does not match nr_trampolines
  ftrace: Fix trampoline hash update check on rec->flags
  ring-buffer: Use rb_page_size() instead of open coded head_page size
  ftrace: Rename ftrace_ops field from trampolines to nr_trampolines
  tracing: Convert local function_graph functions to static
  ftrace: Do not copy old hash when resetting
  tracing: let user specify tracing_thresh after selecting function_graph
  ring-buffer: Always run per-cpu ring buffer resize with schedule_work_on()
  tracing: Remove function_trace_stop and HAVE_FUNCTION_TRACE_MCOUNT_TEST
  s390/ftrace: remove check of obsolete variable function_trace_stop
  arm64, ftrace: Remove check of obsolete variable function_trace_stop
  Blackfin: ftrace: Remove check of obsolete variable function_trace_stop
  metag: ftrace: Remove check of obsolete variable function_trace_stop
  microblaze: ftrace: Remove check of obsolete variable function_trace_stop
  MIPS: ftrace: Remove check of obsolete variable function_trace_stop
  parisc: ftrace: Remove check of obsolete variable function_trace_stop
  sh: ftrace: Remove check of obsolete variable function_trace_stop
  sparc64,ftrace: Remove check of obsolete variable function_trace_stop
  tile: ftrace: Remove check of obsolete variable function_trace_stop
  ftrace: x86: Remove check of obsolete variable function_trace_stop
  ...
 2014-08-04 11:50:00 -07:00
Linus Torvalds
f2a84170ed Merge branch 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 
Pull percpu updates from Tejun Heo:

 - Major reorganization of percpu header files which I think makes
   things a lot more readable and logical than before.

 - percpu-refcount is updated so that it requires explicit destruction
   and can be reinitialized if necessary.  This was pulled into the
   block tree to replace the custom percpu refcnting implemented in
   blk-mq.

 - In the process, percpu and percpu-refcount got cleaned up a bit

* 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (21 commits)
  percpu-refcount: implement percpu_ref_reinit() and percpu_ref_is_zero()
  percpu-refcount: require percpu_ref to be exited explicitly
  percpu-refcount: use unsigned long for pcpu_count pointer
  percpu-refcount: add helpers for ->percpu_count accesses
  percpu-refcount: one bit is enough for REF_STATUS
  percpu-refcount, aio: use percpu_ref_cancel_init() in ioctx_alloc()
  workqueue: stronger test in process_one_work()
  workqueue: clear POOL_DISASSOCIATED in rebind_workers()
  percpu: Use ALIGN macro instead of hand coding alignment calculation
  percpu: invoke __verify_pcpu_ptr() from the generic part of accessors and operations
  percpu: preffity percpu header files
  percpu: use raw_cpu_*() to define __this_cpu_*()
  percpu: reorder macros in percpu header files
  percpu: move {raw|this}_cpu_*() definitions to include/linux/percpu-defs.h
  percpu: move generic {raw|this}_cpu_*_N() definitions to include/asm-generic/percpu.h
  percpu: only allow sized arch overrides for {raw|this}_cpu_*() ops
  percpu: reorganize include/linux/percpu-defs.h
  percpu: move accessors from include/linux/percpu.h to percpu-defs.h
  percpu: include/asm-generic/percpu.h should contain only arch-overridable parts
  percpu: introduce arch_raw_cpu_ptr()
  ...
 2014-08-04 10:09:27 -07:00
Linus Torvalds
f74ad8df4e PCI changes for the v3.17 merge window: 
Resource management
     - Support BAR sizes up to 128GB (Yinghai Lu)
     - Keep original resource if we fail to expand it (Guo Chao)
     - Return conventional error values from pci_revert_fw_address() (Bjorn Helgaas)
     - Tidy resource assignment messages (Bjorn Helgaas)
     - Don't exclude low BIOS area for non-PCI cards (Christoph Schulz)
 
   PCI device hotplug
     - Prevent NULL dereference during pciehp probe (Andreas Noever)
     - Make pciehp pcie_wait_cmd() self-contained (Bjorn Helgaas)
     - Wait for pciehp hotplug command completion lazily (Bjorn Helgaas)
     - Compute pciehp timeout from hotplug command start time (Bjorn Helgaas)
     - Remove pciehp assumptions about which commands cause completion events (Bjorn Helgaas)
     - Clear pciehp Data Link Layer State Changed during init (Myron Stowe)
     - Remove pciehp struct controller.no_cmd_complete (Rajat Jain)
     - Remove cpqphp unnecessary null test (Fabian Frederick)
     - Remove "invalid IRQ" warning for hot-added PCIe ports (Jiang Liu)
 
   IOMMU
     - Add DMA alias quirk for Intel 82801 bridge (Alex Williamson)
 
   MSI
     - Add internal msix_clear_and_set_ctrl() (Yijing Wang)
     - Remove unused msi_enabled_mask() (Yijing Wang)
     - Cache Multiple Message Capable in struct msi_desc (Yijing Wang)
     - Add msi_setup_entry() to clean up initialization (Yijing Wang)
     - Remove unused msi_remove_pci_irq_vectors() (Yijing Wang)
     - Retrieve first MSI IRQ from msi_desc rather than pci_dev (Yijing Wang)
     - Remove unused list access in __pci_restore_msix_state() (Yijing Wang)
     - Use irq_get_msi_desc() to simplify code (Yijing Wang)
 
   Generic host bridge driver
     - Fix GPL v2 license string typo (Bjorn Helgaas)
 
   Marvell MVEBU
     - Fix GPL v2 license string typo (Thierry Reding)
 
   NVIDIA Tegra
     - Use correct initial HW settings (Phil Edworthy)
     - Remove rcar_pcie_setup_window() resource argument (Phil Edworthy)
     - Fix GPL v2 license string typo (Thierry Reding)
 
   Renesas R-Car
     - Remove redundant config accessor register checks (Sergei Shtylyov)
     - Fix GPL v2 license string typo (Bjorn Helgaas)
 
   Virtualization
     - Factor secondary bus reset logic (Gavin Shan)
     - Remove duplicate powerpc reset logic (Gavin Shan)
 
   Miscellaneous
     - Rework default VGA detection for EFI (Bruno Prémont)
     - Fix sysfs "acpi_index" and "label" errors for NIC renaming (Simone Gotti)
     - Configure ASPM at pci_enable_device()-time (Vidya Sagar)
     - Add include/linux/pci_ids.h include guard (Rasmus Villemoes)
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Merge tag 'pci-v3.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "I'll be on vacation until Aug 11, and I suspect the merge window will
  open before then, so I'm sending this to you early.  There are more
  things I'd like to get into v3.17, so I hope to send another pull
  request soon after I return.

  The most notable pieces here are:

   - Support BARs up to 128GB (up from 8GB)
   - Fix SR-IOV resource assignment when we fail to expand a resource
   - Rework pciehp to handle a common hardware erratum
   - Cleanup MSI
   - Fix NIC renaming issue
   - Fix VGA default device issue on EFI systems
   - Fix ASPM configuration (previously we didn't enable it as expected)

  Alex Williamson has graciously agreed to take care of any major issues
  with this if you take it before I return.

  Details:

  Resource management
    - Support BAR sizes up to 128GB (Yinghai Lu)
    - Keep original resource if we fail to expand it (Guo Chao)
    - Return conventional error values from pci_revert_fw_address() (Bjorn Helgaas)
    - Tidy resource assignment messages (Bjorn Helgaas)
    - Don't exclude low BIOS area for non-PCI cards (Christoph Schulz)

  PCI device hotplug
    - Prevent NULL dereference during pciehp probe (Andreas Noever)
    - Make pciehp pcie_wait_cmd() self-contained (Bjorn Helgaas)
    - Wait for pciehp hotplug command completion lazily (Bjorn Helgaas)
    - Compute pciehp timeout from hotplug command start time (Bjorn Helgaas)
    - Remove pciehp assumptions about which commands cause completion events (Bjorn Helgaas)
    - Clear pciehp Data Link Layer State Changed during init (Myron Stowe)
    - Remove pciehp struct controller.no_cmd_complete (Rajat Jain)
    - Remove cpqphp unnecessary null test (Fabian Frederick)
    - Remove "invalid IRQ" warning for hot-added PCIe ports (Jiang Liu)

  IOMMU
    - Add DMA alias quirk for Intel 82801 bridge (Alex Williamson)

  MSI
    - Add internal msix_clear_and_set_ctrl() (Yijing Wang)
    - Remove unused msi_enabled_mask() (Yijing Wang)
    - Cache Multiple Message Capable in struct msi_desc (Yijing Wang)
    - Add msi_setup_entry() to clean up initialization (Yijing Wang)
    - Remove unused msi_remove_pci_irq_vectors() (Yijing Wang)
    - Retrieve first MSI IRQ from msi_desc rather than pci_dev (Yijing Wang)
    - Remove unused list access in __pci_restore_msix_state() (Yijing Wang)
    - Use irq_get_msi_desc() to simplify code (Yijing Wang)

  Generic host bridge driver
    - Fix GPL v2 license string typo (Bjorn Helgaas)

  Marvell MVEBU
    - Fix GPL v2 license string typo (Thierry Reding)

  NVIDIA Tegra
    - Use correct initial HW settings (Phil Edworthy)
    - Remove rcar_pcie_setup_window() resource argument (Phil Edworthy)
    - Fix GPL v2 license string typo (Thierry Reding)

  Renesas R-Car
    - Remove redundant config accessor register checks (Sergei Shtylyov)
    - Fix GPL v2 license string typo (Bjorn Helgaas)

  Virtualization
    - Factor secondary bus reset logic (Gavin Shan)
    - Remove duplicate powerpc reset logic (Gavin Shan)

  Miscellaneous
    - Rework default VGA detection for EFI (Bruno Prémont)
    - Fix sysfs "acpi_index" and "label" errors for NIC renaming (Simone Gotti)
    - Configure ASPM at pci_enable_device()-time (Vidya Sagar)
    - Add include/linux/pci_ids.h include guard (Rasmus Villemoes)"

* tag 'pci-v3.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (38 commits)
  PCI/MSI: Use irq_get_msi_desc() to simplify code
  PCI/MSI: Remove unused list access in __pci_restore_msix_state()
  PCI/MSI: Retrieve first MSI IRQ from msi_desc rather than pci_dev
  PCI/MSI: Remove unused function msi_remove_pci_irq_vectors()
  PCI/MSI: Add msi_setup_entry() to clean up MSI initialization
  PCI: Configure ASPM when enabling device
  x86: don't exclude low BIOS area when allocating address space for non-PCI cards
  PCI: generic: Fix GPL v2 license string typo
  PCI: rcar: Fix GPL v2 license string typo
  PCI: tegra: Fix GPL v2 license string typo
  PCI: mvebu: Fix GPL v2 license string typo
  PCI: Add include guard to include/linux/pci_ids.h
  x86, ia64: Move EFI_FB vga_default_device() initialization to pci_vga_fixup()
  PCI: Tidy resource assignment messages
  PCI: Return conventional error values from pci_revert_fw_address()
  PCI: Cleanup control flow
  PCI: Support BAR sizes up to 128GB
  PCI: cpqphp: Remove unnecessary null test before debugfs_remove()
  PCI: pciehp: Clear Data Link Layer State Changed during init
  PCI: Add bridge DMA alias quirk for Intel 82801 bridge
  ...
 2014-08-04 09:29:37 -07:00
Mark Brown
a6ce305207 Merge remote-tracking branches 'asoc/topic/intel', 'asoc/topic/kirkwood', 'asoc/topic/max98090' and 'asoc/topic/mc13783' into asoc-next 2014-08-04 16:31:45 +01:00
Dave Hansen
d17d8f9ded x86/mm: Add tracepoints for TLB flushes 
We don't have any good way to figure out what kinds of flushes
are being attempted.  Right now, we can try to use the vm
counters, but those only tell us what we actually did with the
hardware (one-by-one vs full) and don't tell us what was actually
_requested_.

This allows us to select out "interesting" TLB flushes that we
might want to optimize (like the ranged ones) and ignore the ones
that we have very little control over (the ones at context
switch).

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: http://lkml.kernel.org/r/20140731154059.4C96CBA5@viggo.jf.intel.com
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
 2014-07-31 08:48:51 -07:00
Dave Hansen
e9f4e0a9fe x86/mm: Rip out complicated, out-of-date, buggy TLB flushing 
I think the flush_tlb_mm_range() code that tries to tune the
flush sizes based on the CPU needs to get ripped out for
several reasons:

1. It is obviously buggy.  It uses mm->total_vm to judge the
   task's footprint in the TLB.  It should certainly be using
   some measure of RSS, *NOT* ->total_vm since only resident
   memory can populate the TLB.
2. Haswell, and several other CPUs are missing from the
   intel_tlb_flushall_shift_set() function.  Thus, it has been
   demonstrated to bitrot quickly in practice.
3. It is plain wrong in my vm:
	[    0.037444] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
	[    0.037444] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0
	[    0.037444] tlb_flushall_shift: 6
   Which leads to it to never use invlpg.
4. The assumptions about TLB refill costs are wrong:
	http://lkml.kernel.org/r/1337782555-8088-3-git-send-email-alex.shi@intel.com
    (more on this in later patches)
5. I can not reproduce the original data: https://lkml.org/lkml/2012/5/17/59
   I believe the sample times were too short.  Running the
   benchmark in a loop yields times that vary quite a bit.

Note that this leaves us with a static ceiling of 1 page.  This
is a conservative, dumb setting, and will be revised in a later
patch.

This also removes the code which attempts to predict whether we
are flushing data or instructions.  We expect instruction flushes
to be relatively rare and not worth tuning for explicitly.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: http://lkml.kernel.org/r/20140731154055.ABC88E89@viggo.jf.intel.com
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
 2014-07-31 08:48:50 -07:00
David Rientjes
2f078b9cb8 x86, apic: Remove enable_apic_mode callback 
The enable_apic_mode() apic callback is never called, so remove it.

Signed-off-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302352320.17503@chino.kir.corp.google.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2014-07-31 08:05:44 -07:00
David Rientjes
11a8318ef5 x86, apic: Remove setup_portio_remap callback 
Since commit b5660ba76b ("x86, platforms: Remove NUMAQ") removed NUMAQ,
the setup_portio_remap() apic callback has been obsolete.  Remove it.

Signed-off-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302351480.17503@chino.kir.corp.google.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2014-07-31 08:05:44 -07:00
David Rientjes
e76661ba09 x86, apic: Remove multi_timer_check callback 
Since commit b5660ba76b ("x86, platforms: Remove NUMAQ") removed NUMAQ,
the multi_timer_check() apic callback has been obsolete.  Remove it.

Signed-off-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302351120.17503@chino.kir.corp.google.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2014-07-31 08:05:43 -07:00
David Rientjes
658ffd7e6f x86, apic: Remove check_apicid_present callback 
The check_apicid_present() apic callback is never called, so remove it
and functions that implement it.

Signed-off-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302350160.17503@chino.kir.corp.google.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2014-07-31 08:05:42 -07:00
David Rientjes
c460b5d340 x86, apic: Remove mps_oem_check callback 
Since commit b5660ba76b ("x86, platforms: Remove NUMAQ") removed NUMAQ,
the mps_oem_check() apic callback has been obsolete.  Remove it.

This allows generic_mps_oem_check() to be removed as well.

Signed-off-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302349390.17503@chino.kir.corp.google.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2014-07-31 08:05:42 -07:00
David Rientjes
300eddf967 x86, apic: Remove smp_callin_clear_local_apic callback 
Since commit b5660ba76b ("x86, platforms: Remove NUMAQ") removed NUMAQ,
the smp_callin_clear_local_apic() apic callback has been obsolete.
Remove it.

Signed-off-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302349040.17503@chino.kir.corp.google.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2014-07-31 08:05:41 -07:00
David Rientjes
6ab1b27c84 x86, apic: Replace trampoline physical addresses with defaults 
The trampoline_phys_{high,low} members of struct apic are always
initialized to DEFAULT_TRAMPOLINE_PHYS_HIGH and TRAMPOLINE_PHYS_LOW,
respectively.  Hardwire the constants and remove the unneeded members.

Signed-off-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302348330.17503@chino.kir.corp.google.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2014-07-31 08:05:41 -07:00
David Rientjes
80a2670379 x86, apic: Remove x86_32_numa_cpu_node callback 
Since commit b5660ba76b ("x86, platforms: Remove NUMAQ") removed NUMAQ,
the x86_32_numa_cpu_node() apic callback has been obsolete.  Remove it.

Signed-off-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302348060.17503@chino.kir.corp.google.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2014-07-31 08:05:40 -07:00
Andy Lutomirski
7209a75d20 x86_64/entry/xen: Do not invoke espfix64 on Xen 
This moves the espfix64 logic into native_iret.  To make this work,
it gets rid of the native patch for INTERRUPT_RETURN:
INTERRUPT_RETURN on native kernels is now 'jmp native_iret'.

This changes the 16-bit SS behavior on Xen from OOPSing to leaking
some bits of the Xen hypervisor's RSP (I think).

[ hpa: this is a nonzero cost on native, but probably not enough to
  measure. Xen needs to fix this in their own code, probably doing
  something equivalent to espfix64. ]

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/7b8f1d8ef6597cb16ae004a43c56980a7de3cf94.1406129132.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org>
 2014-07-28 15:25:40 -07:00
Ingo Molnar
5030c69755 Linux 3.16-rc7 
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Merge tag 'v3.16-rc7' into perf/core, to merge in the latest fixes before applying new changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2014-07-28 10:00:33 +02:00