Borislav Petkov
5f9c01aa7c
x86/microcode: Untangle from BLK_DEV_INITRD
...
Thomas Voegtle reported that doing oldconfig with a .config which has
CONFIG_MICROCODE enabled but BLK_DEV_INITRD disabled prevents the
microcode loading mechanism from being built.
So untangle it from the BLK_DEV_INITRD dependency so that oldconfig
doesn't turn it off and add an explanatory text to its Kconfig help what
the supported methods for supplying microcode are.
Reported-by: Thomas Voegtle <tv@lio96.de >
Tested-by: Thomas Voegtle <tv@lio96.de >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: <stable@vger.kernel.org > # 4.4
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1454499225-21544-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-09 11:41:15 +01:00
Ingo Molnar
2a96fd7417
Merge tag 'v4.5-rc3' into locking/core, to refresh the tree
...
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-09 10:26:02 +01:00
Borislav Petkov
d0af1c0525
perf/x86: Move perf_event_amd_uncore.c .... => x86/events/amd/uncore.c
...
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vince Weaver <vincent.weaver@maine.edu >
Link: http://lkml.kernel.org/r/1454947748-28629-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-09 10:23:50 +01:00
Borislav Petkov
5b26547dd7
perf/x86: Move perf_event_amd_iommu.[ch] .. => x86/events/amd/iommu.[ch]
...
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Joerg Roedel <joro@8bytes.org >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vince Weaver <vincent.weaver@maine.edu >
Link: http://lkml.kernel.org/r/1454947748-28629-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-09 10:23:50 +01:00
Borislav Petkov
218cfe4ed8
perf/x86: Move perf_event_amd_ibs.c ....... => x86/events/amd/ibs.c
...
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vince Weaver <vincent.weaver@maine.edu >
Link: http://lkml.kernel.org/r/1454947748-28629-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-09 10:23:49 +01:00
Borislav Petkov
39b0332a21
perf/x86: Move perf_event_amd.c ........... => x86/events/amd/core.c
...
We distribute those in vendor subdirs, starting with .../events/amd/.
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vince Weaver <vincent.weaver@maine.edu >
Link: http://lkml.kernel.org/r/1454947748-28629-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-09 10:23:49 +01:00
Borislav Petkov
fa9cbf320e
perf/x86: Move perf_event.c ............... => x86/events/core.c
...
Also, keep the churn at minimum by adjusting the include "perf_event.h"
when each file gets moved.
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vince Weaver <vincent.weaver@maine.edu >
Link: http://lkml.kernel.org/r/1454947748-28629-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-09 10:23:49 +01:00
Ingo Molnar
b349e9a916
Merge branch 'x86/urgent' into x86/mm, to pick up dependent fix
...
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-08 12:13:22 +01:00
Ingo Molnar
03e075b38e
Merge branch 'linus' into efi/core, to refresh the branch and to pick up recent fixes
...
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-03 11:30:36 +01:00
Chen Yucong
1b74dde7c4
x86/cpu: Convert printk(KERN_<LEVEL> ...) to pr_<level>(...)
...
- Use the more current logging style pr_<level>(...) instead of the old
printk(KERN_<LEVEL> ...).
- Convert pr_warning() to pr_warn().
Signed-off-by: Chen Yucong <slaoub@gmail.com >
Cc: Borislav Petkov <bp@alien8.de >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1454384702-21707-1-git-send-email-slaoub@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-03 10:30:03 +01:00
Aravind Gopalakrishnan
e6c8f1873b
x86/mce/AMD: Set MCAX Enable bit
...
It is required for the OS to acknowledge that it is using the
MCAX register set and its associated fields by setting the
'McaXEnable' bit in each bank's MCi_CONFIG register. If it is
not set, then all UC errors will cause a system panic.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Tony Luck <tony.luck@intel.com >
Cc: linux-edac <linux-edac@vger.kernel.org >
Link: http://lkml.kernel.org/r/1453750913-4781-9-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-01 10:53:59 +01:00
Borislav Petkov
429893b16d
x86/mce/AMD: Carve out threshold block preparation
...
mce_amd_feature_init() was getting pretty fat, carve out the
threshold_block setup into a separate function in order to
simplify flow and make it more understandable.
No functionality change.
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Tony Luck <tony.luck@intel.com >
Link: http://lkml.kernel.org/r/1453750913-4781-8-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-01 10:53:58 +01:00
Aravind Gopalakrishnan
f57a1f3c14
x86/mce/AMD: Fix LVT offset configuration for thresholding
...
For processor families with the Scalable MCA feature, the LVT
offset for threshold interrupts is configured only in MSR
0xC0000410 and not in each per bank MISC register as was done in
earlier families.
Obtain the LVT offset from the correct MSR for those families.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Tony Luck <tony.luck@intel.com >
Cc: linux-edac <linux-edac@vger.kernel.org >
Link: http://lkml.kernel.org/r/1453750913-4781-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-01 10:53:57 +01:00
Aravind Gopalakrishnan
60f116fca1
x86/mce/AMD: Reduce number of blocks scanned per bank
...
From Fam17h onwards, the number of extended MCx_MISC register blocks is
reduced to 4. It is an architectural change from what we had on
earlier processors.
Although theoritically the total number of extended MCx_MISC
registers was 8 in earlier processor families, in practice we
only had to use the extra registers for MC4. And only 2 of those
were used. So this change does not affect older processors.
Tested on Fam10h and Fam15h systems.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Tony Luck <tony.luck@intel.com >
Cc: linux-edac <linux-edac@vger.kernel.org >
Link: http://lkml.kernel.org/r/1453750913-4781-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-01 10:53:57 +01:00
Aravind Gopalakrishnan
284b965c14
x86/mce/AMD: Do not perform shared bank check for future processors
...
Fam17h and above should not require a check to see if a bank is
shared or not. For shared banks, there will always be only one
core that has visibility over the MSRs and only that particular
core will be allowed to write to the MSRs.
Fix the code to return early if we have Scalable MCA support. No
change in functionality for earlier processors.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com >
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com >
[ Massaged the changelog text, fixed kbuild test robot build warning. ]
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Tony Luck <tony.luck@intel.com >
Cc: linux-edac <linux-edac@vger.kernel.org >
Link: http://lkml.kernel.org/r/1453750913-4781-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-01 10:53:56 +01:00
Aravind Gopalakrishnan
bfbe0eeb76
x86/mce: Fix order of AMD MCE init function call
...
In mce_amd_feature_init() we take decisions based on mce_flags
being set or not. So the feature detection using CPUID should
naturally be ordered before we call mce_amd_feature_init().
Fix that here.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Tony Luck <tony.luck@intel.com >
Cc: linux-edac <linux-edac@vger.kernel.org >
Link: http://lkml.kernel.org/r/1453750913-4781-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-01 10:53:55 +01:00
Huaitong Han
16aaa53756
x86/cpufeature: Use enum cpuid_leafs instead of magic numbers
...
Most of the magic numbers in x86_capability[] have been converted to
'enum cpuid_leafs', and this patch updates the remaining part.
Signed-off-by: Huaitong Han <huaitong.han@intel.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Alexander Kuleshov <kuleshovmail@gmail.com >
Cc: Andrew Morton <akpm@linux-foundation.org >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: David Vrabel <david.vrabel@citrix.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Hector Marco-Gisbert <hecmargi@upv.es >
Cc: Jiang Liu <jiang.liu@linux.intel.com >
Cc: Kees Cook <keescook@chromium.org >
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Rusty Russell <rusty@rustcorp.com.au >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Tony Luck <tony.luck@intel.com >
Cc: Viresh Kumar <viresh.kumar@linaro.org >
Cc: lguest@lists.ozlabs.org
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/1453750913-4781-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-01 10:46:48 +01:00
Alexander Kuleshov
d99e1bd175
x86/entry/traps: Refactor preemption and interrupt flag handling
...
Make the preemption and interrupt flag handling more readable by
removing preempt_conditional_sti() and preempt_conditional_cli()
helpers and using preempt_disable() and
preempt_enable_no_resched() instead.
Rename contitional_sti() and conditional_cli() to the more
understandable cond_local_irq_enable() and
cond_local_irq_disable() respectively, while at it.
Suggested-by: Borislav Petkov <bp@suse.de >
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com >
[ Boris: massage text. ]
Signed-off-by: Borislav Petkov <bp@suse.de >
Acked-by: Thomas Gleixner <tglx@linutronix.de >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Dave Hansen <dave.hansen@linux.intel.com >
Cc: H Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Tony Luck <tony.luck@intel.com >
Cc: Wang Nan <wangnan0@huawei.com >
Link: http://lkml.kernel.org/r/1453750913-4781-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-02-01 10:45:14 +01:00
Linus Torvalds
d517be5fcf
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
...
Pull x86 fixes from Thomas Gleixner:
"A bit on the largish side due to a series of fixes for a regression in
the x86 vector management which was introduced in 4.3. This work was
started in December already, but it took some time to fix all corner
cases and a couple of older bugs in that area which were detected
while at it
Aside of that a few platform updates for intel-mid, quark and UV and
two fixes for in the mm code:
- Use proper types for pgprot values to avoid truncation
- Prevent a size truncation in the pageattr code when setting page
attributes for large mappings"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
x86/mm/pat: Avoid truncation when converting cpa->numpages to address
x86/mm: Fix types used in pgprot cacheability flags translations
x86/platform/quark: Print boundaries correctly
x86/platform/UV: Remove EFI memmap quirk for UV2+
x86/platform/intel-mid: Join string and fix SoC name
x86/platform/intel-mid: Enable 64-bit build
x86/irq: Plug vector cleanup race
x86/irq: Call irq_force_move_complete with irq descriptor
x86/irq: Remove outgoing CPU from vector cleanup mask
x86/irq: Remove the cpumask allocation from send_cleanup_vector()
x86/irq: Clear move_in_progress before sending cleanup IPI
x86/irq: Remove offline cpus from vector cleanup
x86/irq: Get rid of code duplication
x86/irq: Copy vectormask instead of an AND operation
x86/irq: Check vector allocation early
x86/irq: Reorganize the search in assign_irq_vector
x86/irq: Reorganize the return path in assign_irq_vector
x86/irq: Do not use apic_chip_data.old_domain as temporary buffer
x86/irq: Validate that irq descriptor is still active
x86/irq: Fix a race in x86_vector_free_irqs()
...
2016-01-31 16:17:19 -08:00
Linus Torvalds
29d14f0835
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
...
Pull perf fixes from Thomas Gleixner:
"This is much bigger than typical fixes, but Peter found a category of
races that spurred more fixes and more debugging enhancements. Work
started before the merge window, but got finished only now.
Aside of that this contains the usual small fixes to perf and tools.
Nothing particular exciting"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
perf: Remove/simplify lockdep annotation
perf: Synchronously clean up child events
perf: Untangle 'owner' confusion
perf: Add flags argument to perf_remove_from_context()
perf: Clean up sync_child_event()
perf: Robustify event->owner usage and SMP ordering
perf: Fix STATE_EXIT usage
perf: Update locking order
perf: Remove __free_event()
perf/bpf: Convert perf_event_array to use struct file
perf: Fix NULL deref
perf/x86: De-obfuscate code
perf/x86: Fix uninitialized value usage
perf: Fix race in perf_event_exit_task_context()
perf: Fix orphan hole
perf stat: Do not clean event's private stats
perf hists: Fix HISTC_MEM_DCACHELINE width setting
perf annotate browser: Fix behaviour of Shift-Tab with nothing focussed
perf tests: Remove wrong semicolon in while loop in CQM test
perf: Synchronously free aux pages in case of allocation failure
...
2016-01-31 15:38:27 -08:00
Alexander Kuleshov
a473314308
x86/boot: Simplify kernel load address alignment check
...
We are using %rax as temporary register to check the kernel
address alignment. We don't really have to since the TEST
instruction does not clobber the destination operand.
Suggested-by: Brian Gerst <brgerst@gmail.com >
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Alexander Popov <alpopov@ptsecurity.com >
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1453531828-19291-1-git-send-email-kuleshovmail@gmail.com
Link: http://lkml.kernel.org/r/1453842730-28463-11-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 11:22:48 +01:00
Brian Gerst
2476f2fa20
x86/alternatives: Discard dynamic check after init
...
Move the code to do the dynamic check to the altinstr_aux
section so that it is discarded after alternatives have run and
a static branch has been chosen.
This way we're changing the dynamic branch from C code to
assembly, which makes it *substantially* smaller while avoiding
a completely unnecessary call to an out of line function.
Signed-off-by: Brian Gerst <brgerst@gmail.com >
[ Changed it to do TESTB, as hpa suggested. ]
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Andrew Morton <akpm@linux-foundation.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Dave Young <dyoung@redhat.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Kristen Carlson Accardi <kristen@linux.intel.com >
Cc: Laura Abbott <labbott@fedoraproject.org >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Prarit Bhargava <prarit@redhat.com >
Cc: Ross Zwisler <ross.zwisler@linux.intel.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1452972124-7380-1-git-send-email-brgerst@gmail.com
Link: http://lkml.kernel.org/r/20160127084525.GC30712@pd.tnic
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 11:22:22 +01:00
Borislav Petkov
337e4cc840
x86/alternatives: Add an auxilary section
...
Add .altinstr_aux for additional instructions which will be used
before and/or during patching. All stuff which needs more
sophisticated patching should go there. See next patch.
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1453842730-28463-8-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 11:22:20 +01:00
Borislav Petkov
bc696ca05f
x86/cpufeature: Replace the old static_cpu_has() with safe variant
...
So the old one didn't work properly before alternatives had run.
And it was supposed to provide an optimized JMP because the
assumption was that the offset it is jumping to is within a
signed byte and thus a two-byte JMP.
So I did an x86_64 allyesconfig build and dumped all possible
sites where static_cpu_has() was used. The optimization amounted
to all in all 12(!) places where static_cpu_has() had generated
a 2-byte JMP. Which has saved us a whopping 36 bytes!
This clearly is not worth the trouble so we can remove it. The
only place where the optimization might count - in __switch_to()
- we will handle differently. But that's not subject of this
patch.
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1453842730-28463-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 11:22:18 +01:00
Borislav Petkov
cd4d09ec6f
x86/cpufeature: Carve out X86_FEATURE_*
...
Move them to a separate header and have the following
dependency:
x86/cpufeatures.h <- x86/processor.h <- x86/cpufeature.h
This makes it easier to use the header in asm code and not
include the whole cpufeature.h and add guards for asm.
Suggested-by: H. Peter Anvin <hpa@zytor.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1453842730-28463-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 11:22:17 +01:00
Toshi Kani
f296f26349
x86/kexec: Remove walk_iomem_res() call with GART type
...
There is no longer any driver inserting a "GART" region in the
kernel since
707d4eefbdtoshi.kani@hpe.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Reviewed-by: Dave Young <dyoung@redhat.com >
Cc: Andrew Morton <akpm@linux-foundation.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Chun-Yi <joeyli.kernel@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Lee, Chun-Yi <joeyli.kernel@gmail.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Luis R. Rodriguez <mcgrof@suse.com >
Cc: Minfei Huang <mnfhuang@gmail.com >
Cc: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Stephen Rothwell <sfr@canb.auug.org.au >
Cc: Takao Indoh <indou.takao@jp.fujitsu.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Toshi Kani <toshi.kani@hp.com >
Cc: Viresh Kumar <viresh.kumar@linaro.org >
Cc: kexec@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org >
Link: http://lkml.kernel.org/r/1453841853-11383-16-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 09:49:59 +01:00
Toshi Kani
f0f4711aa1
x86, kexec, nvdimm: Use walk_iomem_res_desc() for iomem search
...
Change the callers of walk_iomem_res() scanning for the
following resources by name to use walk_iomem_res_desc()
instead.
"ACPI Tables"
"ACPI Non-volatile Storage"
"Persistent Memory (legacy)"
"Crash kernel"
Note, the caller of walk_iomem_res() with "GART" will be removed
in a later patch.
Signed-off-by: Toshi Kani <toshi.kani@hpe.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Reviewed-by: Dave Young <dyoung@redhat.com >
Cc: Andrew Morton <akpm@linux-foundation.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Chun-Yi <joeyli.kernel@gmail.com >
Cc: Dan Williams <dan.j.williams@intel.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Lee, Chun-Yi <joeyli.kernel@gmail.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Luis R. Rodriguez <mcgrof@suse.com >
Cc: Minfei Huang <mnfhuang@gmail.com >
Cc: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Ross Zwisler <ross.zwisler@linux.intel.com >
Cc: Stephen Rothwell <sfr@canb.auug.org.au >
Cc: Takao Indoh <indou.takao@jp.fujitsu.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Toshi Kani <toshi.kani@hp.com >
Cc: kexec@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org >
Cc: linux-nvdimm@lists.01.org
Link: http://lkml.kernel.org/r/1453841853-11383-15-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 09:49:59 +01:00
Toshi Kani
f33b14a4b9
x86/e820: Set System RAM type and descriptor
...
Change e820_reserve_resources() to set 'flags' and 'desc' from
e820 types.
Set E820_RESERVED_KERN and E820_RAM's (System RAM) io resource
type to IORESOURCE_SYSTEM_RAM.
Do the same for "Kernel data", "Kernel code", and "Kernel bss",
which are child nodes of System RAM.
I/O resource descriptor is set to 'desc' for entries that are
(and will be) target ranges of walk_iomem_res() and
region_intersects().
Signed-off-by: Toshi Kani <toshi.kani@hpe.com >
Signed-off-by: Borislav Petkov <bp@suse.de >
Cc: Andrew Morton <akpm@linux-foundation.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Baoquan He <bhe@redhat.com >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Dan Williams <dan.j.williams@intel.com >
Cc: Dave Young <dyoung@redhat.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Jiri Kosina <jkosina@suse.cz >
Cc: Joerg Roedel <jroedel@suse.de >
Cc: Juergen Gross <jgross@suse.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Luis R. Rodriguez <mcgrof@suse.com >
Cc: Mark Salter <msalter@redhat.com >
Cc: Paolo Bonzini <pbonzini@redhat.com >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Tony Luck <tony.luck@intel.com >
Cc: Toshi Kani <toshi.kani@hp.com >
Cc: WANG Chao <chaowang@redhat.com >
Cc: linux-arch@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org >
Link: http://lkml.kernel.org/r/1453841853-11383-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 09:49:57 +01:00
Alexander Kuleshov
5e9ebbd87a
x86/boot: Micro-optimize reset_early_page_tables()
...
Save 25 bytes of code and make the bootup a tiny bit faster:
text data bss dec filename
9735144 4970776 15474688 30180608 vmlinux.old
9735119 4970776 15474688 30180583 vmlinux
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com >
Cc: Alexander Popov <alpopov@ptsecurity.com >
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1454140872-16926-1-git-send-email-kuleshovmail@gmail.com
[ Fixed various small details. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-30 09:20:55 +01:00
Andy Lutomirski
cfcbadb49d
x86/syscalls: Add syscall entry qualifiers
...
This will let us specify something like 'sys_xyz/foo' instead of
'sys_xyz' in the syscall table, where the 'foo' qualifier conveys
some extra information to the C code.
The intent is to allow things like sys_execve/ptregs to indicate
that sys_execve() touches pt_regs.
Signed-off-by: Andy Lutomirski <luto@kernel.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/2de06e33dce62556b3ec662006fcb295504e296e.1454022279.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-29 09:46:38 +01:00
Andy Lutomirski
3e65654e3d
x86/syscalls: Move compat syscall entry handling into syscalltbl.sh
...
Rather than duplicating the compat entry handling in all
consumers of syscalls_BITS.h, handle it directly in
syscalltbl.sh. Now we generate entries in syscalls_32.h like:
__SYSCALL_I386(5, sys_open)
__SYSCALL_I386(5, compat_sys_open)
and all of its consumers implicitly get the right entry point.
Signed-off-by: Andy Lutomirski <luto@kernel.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/b7c2b501dc0e6e43050e916b95807c3e2e16e9bb.1454022279.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-29 09:46:37 +01:00
Andy Lutomirski
32324ce15e
x86/syscalls: Remove __SYSCALL_COMMON and __SYSCALL_X32
...
The common/64/x32 distinction has no effect other than
determining which kernels actually support the syscall. Move
the logic into syscalltbl.sh.
Signed-off-by: Andy Lutomirski <luto@kernel.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/58d4a95f40e43b894f93288b4a3633963d0ee22e.1454022279.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-29 09:46:37 +01:00
Ingo Molnar
76b36fa896
Merge tag 'v4.5-rc1' into x86/asm, to refresh the branch before merging new changes
...
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-29 09:41:18 +01:00
Michael S. Tsirkin
ca59809ff6
locking/x86: Use mb() around clflush()
...
The following commit:
f8e617f458mst@redhat.com >
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Andrew Morton <akpm@linux-foundation.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Davidlohr Bueso <dave@stgolabs.net >
Cc: Davidlohr Bueso <dbueso@suse.de >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Len Brown <len.brown@intel.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Mike Galbraith <bitbucket@online.de >
Cc: Oleg Nesterov <oleg@redhat.com >
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: virtualization <virtualization@lists.linux-foundation.org >
Link: http://lkml.kernel.org/r/1453921746-16178-5-git-send-email-mst@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-29 09:40:10 +01:00
Peter Zijlstra
8f04b8536f
perf/x86: De-obfuscate code
...
Get rid of the 'onln' obfuscation.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vince Weaver <vincent.weaver@maine.edu >
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-29 08:35:24 +01:00
Peter Zijlstra
e01d8718de
perf/x86: Fix uninitialized value usage
...
When calling intel_alt_er() with .idx != EXTRA_REG_RSP_* we will not
initialize alt_idx and then use this uninitialized value to index an
array.
When that is not fatal, it can result in an infinite loop in its
caller __intel_shared_reg_get_constraints(), with IRQs disabled.
Alternative error modes are random memory corruption due to the
cpuc->shared_regs->regs[] array overrun, which manifest in either
get_constraints or put_constraints doing weird stuff.
Only took 6 hours of painful debugging to find this. Neither GCC nor
Smatch warnings flagged this bug.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Kan Liang <kan.liang@intel.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vince Weaver <vincent.weaver@maine.edu >
Fixes: ae3f011fc2mingo@kernel.org >
2016-01-29 08:35:23 +01:00
Alexander Kuleshov
14365449b6
x86/asm: Remove unused L3_PAGE_OFFSET
...
L3_PAGE_OFFSET was introduced in commit a6523748bdkuleshovmail@gmail.com >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Borislav Petkov <bp@suse.de >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com >
Link: http://lkml.kernel.org/r/1453810881-30622-1-git-send-email-kuleshovmail@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
2016-01-27 11:37:49 +01:00
Stephane Eranian
0e1eb0a1f5
perf/x86: add Intel SkyLake uncore IMC PMU support
...
This patch enables the uncore_imc PMU for Intel
SkyLake Desktop processors (Core i7-6700, model 94).
It is possible to compute memory read/write bandwidth
using:
$ perf stat -a -e uncore_imc/data_reads/,uncore_imc/data_writes/ ....
Signed-off-by: Stephane Eranian <eranian@google.com >
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vince Weaver <vincent.weaver@maine.edu >
Cc: kan.liang@intel.com
Link: http://lkml.kernel.org/r/1452151546-8853-1-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-21 18:54:26 +01:00
Xunlei Pang
978e30c9b4
kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE
...
Move the stuff currently only used by the kexec file code within
CONFIG_KEXEC_FILE (and CONFIG_KEXEC_VERIFY_SIG).
Also move internal "struct kexec_sha_region" and "struct kexec_buf" into
"kexec_internal.h".
Signed-off-by: Xunlei Pang <xlpang@redhat.com >
Cc: "Eric W. Biederman" <ebiederm@xmission.com >
Cc: Dave Young <dyoung@redhat.com >
Signed-off-by: Andrew Morton <akpm@linux-foundation.org >
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org >
2016-01-20 17:09:18 -08:00
Andy Lutomirski
320d25b6a0
x86/mm/32: Set NX in __supported_pte_mask before enabling paging
...
There's a short window in which very early mappings can end up
with NX clear because they are created before we've noticed that
we have NX.
It turns out that we detect NX very early, so there's no need to
defer __supported_pte_mask setup.
Signed-off-by: Andy Lutomirski <luto@kernel.org >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Arjan van de Ven <arjan@linux.intel.com >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Pavel Machek <pavel@ucw.cz >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephen Smalley <sds@tycho.nsa.gov >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/2b544627345f7110160545a3f47031eb45c3ad4f.1453239349.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-20 11:39:14 +01:00
Dmitry V. Levin
95d97adb2b
x86/signal: Cleanup get_nr_restart_syscall()
...
Check for TS_COMPAT instead of TIF_IA32 to distinguish ia32
tasks from 64-bit tasks.
Check for __X32_SYSCALL_BIT iff CONFIG_X86_X32_ABI is defined.
Suggested-by: Andy Lutomirski <luto@amacapital.net >
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org >
Acked-by: Andy Lutomirski <luto@amacapital.net >
Cc: Andy Lutomirski <luto@kernel.org >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: Elvira Khabirova <lineprinter0@gmail.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/20160111145515.GB29007@altlinux.org
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-19 12:55:47 +01:00
Alex Thorlton
d394f2d9d8
x86/platform/UV: Remove EFI memmap quirk for UV2+
...
Commit a5d90c923bathorlton@sgi.com >
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk >
Cc: Dimitri Sivanich <sivanich@sgi.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Hedi Berriche <hedi@sgi.com >
Cc: Len Brown <len.brown@intel.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Mike Travis <travis@sgi.com >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/1449867585-189233-2-git-send-email-athorlton@sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-19 11:58:56 +01:00
Andy Shevchenko
3fda5bb420
x86/platform/intel-mid: Enable 64-bit build
...
Intel Tangier SoC is known to have 64-bit dual core CPU. Enable
64-bit build for it.
The kernel has been tested on Intel Edison board:
Linux buildroot 4.4.0-next-20160115+ #25 SMP Fri Jan 15 22:03:19 EET 2016 x86_64 GNU/Linux
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 74
model name : Genuine Intel(R) CPU 4000 @ 500MHz
stepping : 8
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com >
Cc: Andy Lutomirski <luto@amacapital.net >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Brian Gerst <brgerst@gmail.com >
Cc: Denys Vlasenko <dvlasenk@redhat.com >
Cc: H. Peter Anvin <hpa@zytor.com >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Mika Westerberg <mika.westerberg@linux.intel.com >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1452888668-147116-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2016-01-19 08:39:56 +01:00
Linus Torvalds
0cbeafb245
Merge branch 'akpm' (patches from Andrew)
...
Merge second patch-bomb from Andrew Morton:
- more MM stuff:
- Kirill's page-flags rework
- Kirill's now-allegedly-fixed THP rework
- MADV_FREE implementation
- DAX feature work (msync/fsync). This isn't quite complete but DAX
is new and it's good enough and the guys have a handle on what
needs to be done - I expect this to be wrapped in the next week or
two.
- some vsprintf maintenance work
- various other misc bits
* emailed patches from Andrew Morton <akpm@linux-foundation.org >: (145 commits)
printk: change recursion_bug type to bool
lib/vsprintf: factor out %pN[F] handler as netdev_bits()
lib/vsprintf: refactor duplicate code to special_hex_number()
printk-formats.txt: remove unimplemented %pT
printk: help pr_debug and pr_devel to optimize out arguments
lib/test_printf.c: test dentry printing
lib/test_printf.c: add test for large bitmaps
lib/test_printf.c: account for kvasprintf tests
lib/test_printf.c: add a few number() tests
lib/test_printf.c: test precision quirks
lib/test_printf.c: check for out-of-bound writes
lib/test_printf.c: don't BUG
lib/kasprintf.c: add sanity check to kvasprintf
lib/vsprintf.c: warn about too large precisions and field widths
lib/vsprintf.c: help gcc make number() smaller
lib/vsprintf.c: expand field_width to 24 bits
lib/vsprintf.c: eliminate potential race in string()
lib/vsprintf.c: move string() below widen_string()
lib/vsprintf.c: pull out padding code from dentry_name()
printk: do cond_resched() between lines while outputting to consoles
...
2016-01-17 12:58:52 -08:00
Linus Torvalds
a016af2e70
Merge tag 'sound-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
...
Pull sound updates from Takashi Iwai:
"We've had quite busy weeks in this cycle. Looking at ALSA core, the
significant changes are a few fixes wrt timer and sequencer ioctls
that have been revealed by fuzzer recently. Other than that, ASoC
core got a few updates about DAI link handling, but these are rather
straightforward refactoring.
In drivers scene, ASoC received quite lots of new drivers in addition
to bunch of updates for still ongoing Intel Skylake support and
topology API. HD-audio gained a new HDMI/DP hotplug notification via
component. FireWire got a pile of code refactoring/updates with
SCS.1x driver integration.
More highlights are shown below.
[ NOTE: this contains also many commits for DRM. This is due to the
pull of drm stable branch into sound tree, as the base of i915 audio
component work for HD-audio. The highlights below don't contain
these DRM changes, as these are supposed to be pulled via drm tree
in anyway sooner or later. ]
Core:
- Handful fixes to harden ALSA timer and sequencer ioctls against
races reported by syzkaller fuzzer
- Irq description string can be unique to each card; only for
HD-audio for now
ASoC:
- Conversion of the array of DAI links to a list for supporting
dynamically adding and removing DAI links
- Topology API enhancements to make everything more component based
and being able to specify PCM links via topology
- Some more fixes for the topology code, though it is still not final
and ready for enabling in production; we really need to get to the
point where that can be done
- A pile of changes for Intel SkyLake drivers which hopefully deliver
some useful initial functionality for systems with this chipset,
though there is more work still to come
- Lots of new features and cleanups for the Renesas drivers
- ANC support for WM5110
- New drivers: Imagination Technologies IPs, Atmel class D speaker,
Cirrus CS47L24 and WM1831, Dialog DA7128, Realtek RT5659 and
RT56156, Rockchip RK3036, TI PC3168A, and AMD ACP
- Rename PCM1792a driver to be generic pcm179x
HD-Audio:
- Use audio component for i915 HDMI/DP hotplug handling
- On-demand binding with i915 driver
- bdl_pos_adj parameter adjustment for Baytrail controllers
- Enable power_save_node for CX20722; this shouldn't lead to
regression, hopefully
- Kabylake HDMI/DP codec support
- Quirks for Lenovo E50-80, Dell Latitude E-series, and other Dell
machines
- A few code refactoring
FireWire:
- Lots of code cleanup and refactoring
- Integrate the support of SCS.1x devices into snd-oxfw driver;
snd-scs1x driver is obsoleted
USB-audio:
- Fix possible NULL dereference at disconnection
- A regression fix for Native Instruments devices
Misc:
- A few code cleanups of fm801 driver"
* tag 'sound-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (722 commits)
ALSA: timer: Code cleanup
ALSA: timer: Harden slave timer list handling
ALSA: hda - Add fixup for Dell Latitidue E6540
ALSA: timer: Fix race among timer ioctls
ALSA: hda - add codec support for Kabylake display audio codec
ALSA: timer: Fix double unlink of active_list
ALSA: usb-audio: Fix mixer ctl regression of Native Instrument devices
ALSA: hda - fix the headset mic detection problem for a Dell laptop
ALSA: hda - Fix white noise on Dell Latitude E5550
ALSA: hda_intel: add card number to irq description
ALSA: seq: Fix race at timer setup and close
ALSA: seq: Fix missing NULL check at remove_events ioctl
ALSA: usb-audio: Avoid calling usb_autopm_put_interface() at disconnect
ASoC: hdac_hdmi: remove unused hdac_hdmi_query_pin_connlist
ASoC: AMD: Add missing include file
ALSA: hda - Fixup inverted internal mic for Lenovo E50-80
ALSA: usb: Add native DSD support for Oppo HA-1
ASoC: Make aux_dev more like a generic component
ASoC: bcm2835: cleanup includes by ordering them alphabetically
ASoC: AMD: Manage ACP 2.x SRAM banks power
...
2016-01-17 12:05:31 -08:00
Kirill A. Shutemov
78ddc53473
thp: rename split_huge_page_pmd() to split_huge_pmd()
...
We are going to decouple splitting THP PMD from splitting underlying
compound page.
This patch renames split_huge_page_pmd*() functions to split_huge_pmd*()
to reflect the fact that it doesn't imply page splitting, only PMD.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com >
Tested-by: Sasha Levin <sasha.levin@oracle.com >
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com >
Acked-by: Jerome Marchand <jmarchan@redhat.com >
Acked-by: Vlastimil Babka <vbabka@suse.cz >
Cc: Andrea Arcangeli <aarcange@redhat.com >
Cc: Hugh Dickins <hughd@google.com >
Cc: Dave Hansen <dave.hansen@intel.com >
Cc: Mel Gorman <mgorman@suse.de >
Cc: Rik van Riel <riel@redhat.com >
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com >
Cc: Steve Capper <steve.capper@linaro.org >
Cc: Johannes Weiner <hannes@cmpxchg.org >
Cc: Michal Hocko <mhocko@suse.cz >
Cc: Christoph Lameter <cl@linux.com >
Cc: David Rientjes <rientjes@google.com >
Signed-off-by: Andrew Morton <akpm@linux-foundation.org >
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org >
2016-01-15 17:56:32 -08:00
Thomas Gleixner
98229aa36c
x86/irq: Plug vector cleanup race
...
We still can end up with a stale vector due to the following:
CPU0 CPU1 CPU2
lock_vector()
data->move_in_progress=0
sendIPI()
unlock_vector()
set_affinity()
assign_irq_vector()
lock_vector() handle_IPI
move_in_progress = 1 lock_vector()
unlock_vector()
move_in_progress == 1
So we need to serialize the vector assignment against a pending cleanup. The
solution is rather simple now. We not only check for the move_in_progress flag
in assign_irq_vector(), we also check whether there is still a cleanup pending
in the old_domain cpumask. If so, we return -EBUSY to the caller and let him
deal with it. Though we have to be careful in the cpu unplug case. If the
cleanout has not yet completed then the following setaffinity() call would
return -EBUSY. Add code which prevents this.
Full context is here: http://lkml.kernel.org/r/5653B688.4050809@stratus.com
Reported-and-tested-by: Joe Lawrence <joe.lawrence@stratus.com >
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
Tested-by: Borislav Petkov <bp@alien8.de >
Cc: Jiang Liu <jiang.liu@linux.intel.com >
Cc: Jeremiah Mahler <jmmahler@gmail.com >
Cc: andy.shevchenko@gmail.com
Cc: Guenter Roeck <linux@roeck-us.net >
Cc: stable@vger.kernel.org #4.3+
Link: http://lkml.kernel.org/r/20151231160107.207265407@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
2016-01-15 13:44:02 +01:00
Thomas Gleixner
90a2282e23
x86/irq: Call irq_force_move_complete with irq descriptor
...
First of all there is no point in looking up the irq descriptor again, but we
also need the descriptor for the final cleanup race fix in the next
patch. Make that change seperate. No functional difference.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
Tested-by: Borislav Petkov <bp@alien8.de >
Tested-by: Joe Lawrence <joe.lawrence@stratus.com >
Cc: Jiang Liu <jiang.liu@linux.intel.com >
Cc: Jeremiah Mahler <jmmahler@gmail.com >
Cc: andy.shevchenko@gmail.com
Cc: Guenter Roeck <linux@roeck-us.net >
Cc: stable@vger.kernel.org #4.3+
Link: http://lkml.kernel.org/r/20151231160107.125211743@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
2016-01-15 13:44:01 +01:00
Thomas Gleixner
56d7d2f4bb
x86/irq: Remove outgoing CPU from vector cleanup mask
...
We want to synchronize new vector assignments with a pending cleanup. Remove a
dying cpu from a pending cleanup mask.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
Tested-by: Borislav Petkov <bp@alien8.de >
Tested-by: Joe Lawrence <joe.lawrence@stratus.com >
Cc: Jiang Liu <jiang.liu@linux.intel.com >
Cc: Jeremiah Mahler <jmmahler@gmail.com >
Cc: andy.shevchenko@gmail.com
Cc: Guenter Roeck <linux@roeck-us.net >
Cc: stable@vger.kernel.org #4.3+
Link: http://lkml.kernel.org/r/20151231160107.045961667@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
2016-01-15 13:44:01 +01:00
Thomas Gleixner
5da0c1217f
x86/irq: Remove the cpumask allocation from send_cleanup_vector()
...
There is no need to allocate a new cpumask for sending the cleanup vector. The
old_domain mask is now protected by the vector_lock, so we can safely remove
the offline cpus from it and send the IPI with the resulting mask.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
Tested-by: Borislav Petkov <bp@alien8.de >
Tested-by: Joe Lawrence <joe.lawrence@stratus.com >
Cc: Jiang Liu <jiang.liu@linux.intel.com >
Cc: Jeremiah Mahler <jmmahler@gmail.com >
Cc: andy.shevchenko@gmail.com
Cc: Guenter Roeck <linux@roeck-us.net >
Cc: stable@vger.kernel.org #4.3+
Link: http://lkml.kernel.org/r/20151231160106.967993932@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de >
2016-01-15 13:44:01 +01:00
