x86, AMD: Change Boris' email address

Move to private email and put in maintained status.

Signed-off-by: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1351532410-4887-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
EDAC: Change Boris' email address

My @amd.com address will be invalid soon so move to private
email address.

Signed-off-by: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1351532410-4887-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
MAINTAINERS: Change Boris' email address

Move to private mail address.

Signed-off-by: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1351532410-4887-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
x86, microcode_amd: Change email addresses, MAINTAINERS entry

Signed-off-by: Andreas Herrmann <herrmann.der.user@googlemail.com>
Cc: lm-sensors@lm-sensors.org
Cc: oprofile-list@lists.sf.net
Cc: Stephane Eranian <eranian@google.com>
Cc: Robert Richter <rric@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jorg Roedel <joro@8bytes.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Link: http://lkml.kernel.org/r/20121029175138.GC5024@tweety
Signed-off-by: Ingo Molnar <mingo@kernel.org>
MAINTAINERS: Update email address for Robert Richter

Signed-off-by: Robert Richter <rric@kernel.org>
Signed-off-by: Andreas Herrmann <herrmann.der.user@googlemail.com>
Cc: lm-sensors@lm-sensors.org
Cc: oprofile-list@lists.sf.net
Cc: Stephane Eranian <eranian@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: =?iso-8859-1?Q?J=F6rg_R=F6del?= <joro@8bytes.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Link: http://lkml.kernel.org/r/20121029175325.GE5024@tweety
Signed-off-by: Ingo Molnar <mingo@kernel.org>
x86/ce4100: Fix pm_poweroff

The CE4100 platform is currently missing a proper pm_poweroff
implementation leading to poweroff making the CPU spin forever
and the CE4100 platform does not enter a low-power mode where
the external Power Management Unit can properly power off the
system. Power off on this platform is implemented pretty much
like reboot, by writing to the SoC built-in 8051 microcontroller
mapped at I/O port 0xcf9, the value 0x4.

Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: rui.zhang@intel.com
Cc: alan@linux.intel.com
Link: http://lkml.kernel.org/r/1351518020-25556-2-git-send-email-ffainelli@freebox.fr
Signed-off-by: Ingo Molnar <mingo@kernel.org>
x86/ce4100: Fix reboot by forcing the reboot method to be KBD

The default reboot is via ACPI for this platform, and the CEFDK
bootloader actually supports this, but will issue a system power
off instead of a real reboot. Setting the reboot method to be
KBD instead of ACPI ensures proper system reboot.

Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Cc: rui.zhang@intel.com
Cc: alan@linux.intel.com
Link: http://lkml.kernel.org/r/1351518020-25556-3-git-send-email-ffainelli@freebox.fr
Signed-off-by: Ingo Molnar <mingo@kernel.org>
x86/ce4100: Fix PCI configuration register access for devices without interrupts

Some CE4100 devices such as the:

 - DFX module (01:0b.7)
 - entertainment encryption device (01:10.0)
 - multimedia controller (01:12.0)

do not have a device interrupt at all.

This patch fixes the PCI controller code to declare the missing
PCI configuration register space, as well as a fixup method for
forcing the interrupt pin to be 0 for these devices. This is
required to ensure that pci drivers matching on these devices
will be able to honor the various PCI subsystem calls touching
the configuration space.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: rui.zhang@intel.com
Cc: alan@linux.intel.com
Link: http://lkml.kernel.org/r/1351518020-25556-4-git-send-email-ffainelli@freebox.fr
Signed-off-by: Ingo Molnar <mingo@kernel.org>
x86/mce: Do not change worker's running cpu in cmci_rediscover().

cmci_rediscover() used set_cpus_allowed_ptr() to change the current process's
running cpu, and migrate itself to the dest cpu. But worker processes are not
allowed to be migrated. If current is a worker, the worker will be migrated to
another cpu, but the corresponding  worker_pool is still on the original cpu.

In this case, the following BUG_ON in try_to_wake_up_local() will be triggered:
BUG_ON(rq != this_rq());

This will cause the kernel panic. The call trace is like the following:

[ 6155.451107] ------------[ cut here ]------------
[ 6155.452019] kernel BUG at kernel/sched/core.c:1654!
......
[ 6155.452019] RIP: 0010:[<ffffffff810add15>]  [<ffffffff810add15>] try_to_wake_up_local+0x115/0x130
......
[ 6155.452019] Call Trace:
[ 6155.452019]  [<ffffffff8166fc14>] __schedule+0x764/0x880
[ 6155.452019]  [<ffffffff81670059>] schedule+0x29/0x70
[ 6155.452019]  [<ffffffff8166de65>] schedule_timeout+0x235/0x2d0
[ 6155.452019]  [<ffffffff810db57d>] ? mark_held_locks+0x8d/0x140
[ 6155.452019]  [<ffffffff810dd463>] ? __lock_release+0x133/0x1a0
[ 6155.452019]  [<ffffffff81671c50>] ? _raw_spin_unlock_irq+0x30/0x50
[ 6155.452019]  [<ffffffff810db8f5>] ? trace_hardirqs_on_caller+0x105/0x190
[ 6155.452019]  [<ffffffff8166fefb>] wait_for_common+0x12b/0x180
[ 6155.452019]  [<ffffffff810b0b30>] ? try_to_wake_up+0x2f0/0x2f0
[ 6155.452019]  [<ffffffff8167002d>] wait_for_completion+0x1d/0x20
[ 6155.452019]  [<ffffffff8110008a>] stop_one_cpu+0x8a/0xc0
[ 6155.452019]  [<ffffffff810abd40>] ? __migrate_task+0x1a0/0x1a0
[ 6155.452019]  [<ffffffff810a6ab8>] ? complete+0x28/0x60
[ 6155.452019]  [<ffffffff810b0fd8>] set_cpus_allowed_ptr+0x128/0x130
[ 6155.452019]  [<ffffffff81036785>] cmci_rediscover+0xf5/0x140
[ 6155.452019]  [<ffffffff816643c0>] mce_cpu_callback+0x18d/0x19d
[ 6155.452019]  [<ffffffff81676187>] notifier_call_chain+0x67/0x150
[ 6155.452019]  [<ffffffff810a03de>] __raw_notifier_call_chain+0xe/0x10
[ 6155.452019]  [<ffffffff81070470>] __cpu_notify+0x20/0x40
[ 6155.452019]  [<ffffffff810704a5>] cpu_notify_nofail+0x15/0x30
[ 6155.452019]  [<ffffffff81655182>] _cpu_down+0x262/0x2e0
[ 6155.452019]  [<ffffffff81655236>] cpu_down+0x36/0x50
[ 6155.452019]  [<ffffffff813d3eaa>] acpi_processor_remove+0x50/0x11e
[ 6155.452019]  [<ffffffff813a6978>] acpi_device_remove+0x90/0xb2
[ 6155.452019]  [<ffffffff8143cbec>] __device_release_driver+0x7c/0xf0
[ 6155.452019]  [<ffffffff8143cd6f>] device_release_driver+0x2f/0x50
[ 6155.452019]  [<ffffffff813a7870>] acpi_bus_remove+0x32/0x6d
[ 6155.452019]  [<ffffffff813a7932>] acpi_bus_trim+0x87/0xee
[ 6155.452019]  [<ffffffff813a7a21>] acpi_bus_hot_remove_device+0x88/0x16b
[ 6155.452019]  [<ffffffff813a33ee>] acpi_os_execute_deferred+0x27/0x34
[ 6155.452019]  [<ffffffff81090589>] process_one_work+0x219/0x680
[ 6155.452019]  [<ffffffff81090528>] ? process_one_work+0x1b8/0x680
[ 6155.452019]  [<ffffffff813a33c7>] ? acpi_os_wait_events_complete+0x23/0x23
[ 6155.452019]  [<ffffffff810923be>] worker_thread+0x12e/0x320
[ 6155.452019]  [<ffffffff81092290>] ? manage_workers+0x110/0x110
[ 6155.452019]  [<ffffffff81098396>] kthread+0xc6/0xd0
[ 6155.452019]  [<ffffffff8167c4c4>] kernel_thread_helper+0x4/0x10
[ 6155.452019]  [<ffffffff81671f30>] ? retint_restore_args+0x13/0x13
[ 6155.452019]  [<ffffffff810982d0>] ? __init_kthread_worker+0x70/0x70
[ 6155.452019]  [<ffffffff8167c4c0>] ? gs_change+0x13/0x13

This patch removes the set_cpus_allowed_ptr() call, and put the cmci rediscover
jobs onto all the other cpus using system_wq. This could bring some delay for
the jobs.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
x86, amd: Disable way access filter on Piledriver CPUs

The Way Access Filter in recent AMD CPUs may hurt the performance of
some workloads, caused by aliasing issues in the L1 cache.
This patch disables it on the affected CPUs.

The issue is similar to that one of last year:
http://lkml.indiana.edu/hypermail/linux/kernel/1107.3/00041.html
This new patch does not replace the old one, we just need another
quirk for newer CPUs.

The performance penalty without the patch depends on the
circumstances, but is a bit less than the last year's 3%.

The workloads affected would be those that access code from the same
physical page under different virtual addresses, so different
processes using the same libraries with ASLR or multiple instances of
PIE-binaries. The code needs to be accessed simultaneously from both
cores of the same compute unit.

More details can be found here:
http://developer.amd.com/Assets/SharedL1InstructionCacheonAMD15hCPU.pdf

CPUs affected are anything with the core known as Piledriver.
That includes the new parts of the AMD A-Series (aka Trinity) and the
just released new CPUs of the FX-Series (aka Vishera).
The model numbering is a bit odd here: FX CPUs have model 2,
A-Series has model 10h, with possible extensions to 1Fh. Hence the
range of model ids.

Signed-off-by: Andre Przywara <osp@andrep.de>
Link: http://lkml.kernel.org/r/1351700450-9277-1-git-send-email-osp@andrep.de
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Merge tag 'please-pull-tangchen' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras into x86/urgent

Pull MCE fix from Tony Luck:

   "Fix problem in CMCI rediscovery code that was illegally
    migrating worker threads to other cpus."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
x86, mm: Correct vmflag test for checking VM_HUGETLB

commit 611ae8e3f5204f7480b3b405993b3352cfa16662('enable tlb flush range
support for x86') change flush_tlb_mm_range() considerably. After this,
we test whether vmflag equal to VM_HUGETLB and it may be always failed,
because vmflag usually has other flags simultaneously.
Our intention is to check whether this vma is for hughtlb, so correct it
according to this purpose.

Signed-off-by: Joonsoo Kim <js1304@gmail.com>
Acked-by: Alex Shi <alex.shi@intel.com>
Link: http://lkml.kernel.org/r/1352740656-19417-1-git-send-email-js1304@gmail.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
x86: remove dummy long from EFI stub

Commit 2e064b1 (x86, efi: Fix issue of overlapping .reloc section for
EFI_STUB) removed a dummy reloc added by commit 291f363 (x86, efi: EFI
boot stub support), but forgot to remove the dummy long used by that
reloc.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Lee G Rosenbaum <lee.g.rosenbaum@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
x86, efi: Fix processor-specific memcpy() build error

Building for Athlon/Duron/K7 results in the following build error,

arch/x86/boot/compressed/eboot.o: In function `__constant_memcpy3d':
eboot.c:(.text+0x385): undefined reference to `_mmx_memcpy'
arch/x86/boot/compressed/eboot.o: In function `efi_main':
eboot.c:(.text+0x1a22): undefined reference to `_mmx_memcpy'

because the boot stub code doesn't link with the kernel proper, and
therefore doesn't have access to the 3DNow version of memcpy. So,
follow the example of misc.c and #undef memcpy so that we use the
version provided by misc.c.

See https://bugzilla.kernel.org/show_bug.cgi?id=50391

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Ryan Underwood <nemesis@icequake.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: stable@vger.kernel.org
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Merge commit 'efi-for-3.7-v2' into x86/urgent
x86-32: Fix invalid stack address while in softirq

In 32 bit the stack address provided by kernel_stack_pointer() may
point to an invalid range causing NULL pointer access or page faults
while in NMI (see trace below). This happens if called in softirq
context and if the stack is empty. The address at &regs->sp is then
out of range.

Fixing this by checking if regs and &regs->sp are in the same stack
context. Otherwise return the previous stack pointer stored in struct
thread_info. If that address is invalid too, return address of regs.

 BUG: unable to handle kernel NULL pointer dereference at 0000000a
 IP: [<c1004237>] print_context_stack+0x6e/0x8d
 *pde = 00000000
 Oops: 0000 [#1] SMP
 Modules linked in:
 Pid: 4434, comm: perl Not tainted 3.6.0-rc3-oprofile-i386-standard-g4411a05 #4 Hewlett-Packard HP xw9400 Workstation/0A1Ch
 EIP: 0060:[<c1004237>] EFLAGS: 00010093 CPU: 0
 EIP is at print_context_stack+0x6e/0x8d
 EAX: ffffe000 EBX: 0000000a ECX: f4435f94 EDX: 0000000a
 ESI: f4435f94 EDI: f4435f94 EBP: f5409ec0 ESP: f5409ea0
  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
 CR0: 8005003b CR2: 0000000a CR3: 34ac9000 CR4: 000007d0
 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
 DR6: ffff0ff0 DR7: 00000400
 Process perl (pid: 4434, ti=f5408000 task=f5637850 task.ti=f4434000)
 Stack:
  000003e8 ffffe000 00001ffc f4e39b00 00000000 0000000a f4435f94 c155198c
  f5409ef0 c1003723 c155198c f5409f04 00000000 f5409edc 00000000 00000000
  f5409ee8 f4435f94 f5409fc4 00000001 f5409f1c c12dce1c 00000000 c155198c
 Call Trace:
  [<c1003723>] dump_trace+0x7b/0xa1
  [<c12dce1c>] x86_backtrace+0x40/0x88
  [<c12db712>] ? oprofile_add_sample+0x56/0x84
  [<c12db731>] oprofile_add_sample+0x75/0x84
  [<c12ddb5b>] op_amd_check_ctrs+0x46/0x260
  [<c12dd40d>] profile_exceptions_notify+0x23/0x4c
  [<c1395034>] nmi_handle+0x31/0x4a
  [<c1029dc5>] ? ftrace_define_fields_irq_handler_entry+0x45/0x45
  [<c13950ed>] do_nmi+0xa0/0x2ff
  [<c1029dc5>] ? ftrace_define_fields_irq_handler_entry+0x45/0x45
  [<c13949e5>] nmi_stack_correct+0x28/0x2d
  [<c1029dc5>] ? ftrace_define_fields_irq_handler_entry+0x45/0x45
  [<c1003603>] ? do_softirq+0x4b/0x7f
  <IRQ>
  [<c102a06f>] irq_exit+0x35/0x5b
  [<c1018f56>] smp_apic_timer_interrupt+0x6c/0x7a
  [<c1394746>] apic_timer_interrupt+0x2a/0x30
 Code: 89 fe eb 08 31 c9 8b 45 0c ff 55 ec 83 c3 04 83 7d 10 00 74 0c 3b 5d 10 73 26 3b 5d e4 73 0c eb 1f 3b 5d f0 76 1a 3b 5d e8 73 15 <8b> 13 89 d0 89 55 e0 e8 ad 42 03 00 85 c0 8b 55 e0 75 a6 eb cc
 EIP: [<c1004237>] print_context_stack+0x6e/0x8d SS:ESP 0068:f5409ea0
 CR2: 000000000000000a
 ---[ end trace 62afee3481b00012 ]---
 Kernel panic - not syncing: Fatal exception in interrupt

V2:
* add comments to kernel_stack_pointer()
* always return a valid stack address by falling back to the address
  of regs

Reported-by: Yang Wei <wei.yang@windriver.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Link: http://lkml.kernel.org/r/20120912135059.GZ8285@erda.amd.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Jun Zhang <jun.zhang@intel.com>
x86-32: Export kernel_stack_pointer() for modules

Modules, in particular oprofile (and possibly other similar tools)
need kernel_stack_pointer(), so export it using EXPORT_SYMBOL_GPL().

Cc: Yang Wei <wei.yang@windriver.com>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Jun Zhang <jun.zhang@intel.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20120912135059.GZ8285@erda.amd.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
x86, microcode, AMD: Add support for family 16h processors

Add valid patch size for family 16h processors.

[ hpa: promoting to urgent/stable since it is hw enabling and trivial ]

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@amd.com>
Acked-by: Andreas Herrmann <herrmann.der.user@googlemail.com>
Link: http://lkml.kernel.org/r/1353004910-2204-1-git-send-email-boris.ostrovsky@amd.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org>
x86-64: Fix ordering of CFI directives and recent ASM_CLAC additions

While these got added in the right place everywhere else, entry_64.S
is the odd one where they ended up before the initial CFI directive(s).
In order to cover the full code ranges, the CFI directive must be
first, though.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/5093BA1F02000078000A600E@nat28.tlf.novell.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 arch fixes from Peter Anvin:
 "Here is a collection of fixes for 3.7-rc7.  This is a superset of
  tglx' earlier pull request."

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86-64: Fix ordering of CFI directives and recent ASM_CLAC additions
  x86, microcode, AMD: Add support for family 16h processors
  x86-32: Export kernel_stack_pointer() for modules
  x86-32: Fix invalid stack address while in softirq
  x86, efi: Fix processor-specific memcpy() build error
  x86: remove dummy long from EFI stub
  x86, mm: Correct vmflag test for checking VM_HUGETLB
  x86, amd: Disable way access filter on Piledriver CPUs
  x86/mce: Do not change worker's running cpu in cmci_rediscover().
  x86/ce4100: Fix PCI configuration register access for devices without interrupts
  x86/ce4100: Fix reboot by forcing the reboot method to be KBD
  x86/ce4100: Fix pm_poweroff
  MAINTAINERS: Update email address for Robert Richter
  x86, microcode_amd: Change email addresses, MAINTAINERS entry
  MAINTAINERS: Change Boris' email address
  EDAC: Change Boris' email address
  x86, AMD: Change Boris' email address