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linux/arch/x86/kernel/cpu
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Borislav Petkov 0399f73299 x86/microcode/amd: Do not overwrite final patch levels 
A certain number of patch levels of applied microcode should not
be overwritten by the microcode loader, otherwise bad things
will happen.

Check those and abort update if the current core has one of
those final patch levels applied by the BIOS. 32-bit needs
special handling, of course.

See https://bugzilla.suse.com/show_bug.cgi?id=913996 for more
info.

Tested-by: Peter Kirchgeßner <pkirchgessner@t-online.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
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>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1444641762-9437-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 16:15:48 +02:00
..
mcheck x86/mce: Don't clear shared banks on Intel when offlining CPUs 2015-09-28 10:15:26 +02:00
microcode x86/microcode/amd: Do not overwrite final patch levels 2015-10-12 16:15:48 +02:00
mtrr x86/mm/mtrr: Remove kernel internal MTRR interfaces: unexport mtrr_add() and mtrr_del() 2015-08-28 10:09:28 +02:00
.gitignore
amd.c x86/asm/delay: Introduce an MWAITX-based delay with a configurable timer 2015-08-22 14:52:16 +02:00
bugs_64.c
bugs.c x86/fpu: Move various internal function prototypes to fpu/internal.h 2015-05-19 15:47:48 +02:00
centaur.c x86: Remove CONFIG_X86_OOSTORE 2014-03-11 10:16:18 -07:00
common.c x86/cpu: Print family/model/stepping in hex 2015-09-13 09:30:07 +02:00
cpu.h x86/cpu: Restore MSR_IA32_ENERGY_PERF_BIAS after resume 2015-07-21 07:51:38 +02:00
cyrix.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
hypervisor.c hypervisor/x86/xen: Unset X86_BUG_SYSRET_SS_ATTRS on Xen PV guests 2015-05-05 18:27:43 +01:00
intel_cacheinfo.c x86: Kill CONFIG_X86_HT 2015-06-07 15:33:44 +02:00
intel_pt.h perf/x86/intel/pt: Clean up files of Intel Processor Trace 2015-08-12 11:43:22 +02:00
intel.c x86/cpu: Restore MSR_IA32_ENERGY_PERF_BIAS after resume 2015-07-21 07:51:38 +02:00
Makefile perf/x86: Add an MSR PMU driver 2015-08-04 10:17:00 +02:00
match.c x86: align x86 arch with generic CPU modalias handling 2014-02-18 12:45:38 -08:00
mkcapflags.sh x86/build: Fix mkcapflags.sh bash-ism 2015-02-19 02:21:00 +01:00
mshyperv.c x86/hyperv: Fix the build in the !CONFIG_KEXEC_CORE case 2015-09-30 07:44:15 +02:00
perf_event_amd_ibs.c perf/x86/amd/ibs: Convert force_ibs_eilvt_setup() to void 2015-02-18 17:01:46 +01:00
perf_event_amd_iommu.c cpumask: factor out show_cpumap into separate helper function 2014-11-07 11:45:00 -08:00
perf_event_amd_iommu.h
perf_event_amd_uncore.c cpumask: factor out show_cpumap into separate helper function 2014-11-07 11:45:00 -08:00
perf_event_amd.c perf/x86: Add 'index' param to get_event_constraint() callback 2015-04-02 17:33:10 +02:00
perf_event_intel_bts.c perf/x86/intel/bts: Set event->hw.itrace_started in pmu::start to match the new logic 2015-09-11 10:06:03 +02:00
perf_event_intel_cqm.c perf/x86/intel/cqm: Do not access cpu_data() from CPU_UP_PREPARE handler 2015-08-12 11:37:23 +02:00
perf_event_intel_ds.c perf/x86/intel/pebs: Robustify PEBS buffer drain 2015-08-04 10:17:01 +02:00
perf_event_intel_lbr.c perf/x86/intel/lbr: Limit LBR accesses to TOS in callstack mode 2015-08-04 10:16:59 +02:00
perf_event_intel_pt.c perf/x86/intel/pt: Clean up files of Intel Processor Trace 2015-08-12 11:43:22 +02:00
perf_event_intel_rapl.c perf/x86/intel/rapl: Add support for Knights Landing (KNL) 2015-08-04 10:16:52 +02:00
perf_event_intel_uncore_nhmex.c perf/x86/uncore: Fix coccinelle warnings 2014-08-13 07:51:09 +02:00
perf_event_intel_uncore_snb.c perf/x86/intel/uncore: Add support for ARB uncore PMU on Sandy/IvyBridge 2015-08-04 10:16:52 +02:00
perf_event_intel_uncore_snbep.c perf/x86/intel/uncore: Add Broadwell-DE uncore support 2015-08-04 10:17:00 +02:00
perf_event_intel_uncore.c perf/x86/intel/uncore: Add Broadwell-DE uncore support 2015-08-04 10:17:00 +02:00
perf_event_intel_uncore.h perf/x86/intel/uncore: Add Broadwell-DE uncore support 2015-08-04 10:17:00 +02:00
perf_event_intel.c perf/x86/intel: Fix Skylake FRONTEND MSR extrareg mask 2015-09-18 09:20:23 +02:00
perf_event_knc.c x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
perf_event_msr.c perf/x86: Change test_aperfmperf() and test_intel() to static 2015-09-25 09:42:40 +02:00
perf_event_p4.c x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
perf_event_p6.c perf/x86/intel/p6: Add userspace RDPMC quirk for PPro 2014-02-09 13:08:24 +01:00
perf_event.c Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-09-01 08:40:25 -07:00
perf_event.h perf/x86/intel/pebs: Add PEBS frontend profiling for Skylake 2015-09-18 09:20:22 +02:00
perfctr-watchdog.c
powerflags.c
proc.c x86: Replace cpu_**_mask() with topology_**_cpumask() 2015-05-27 15:22:17 +02:00
rdrand.c x86, rdrand: When nordrand is specified, disable RDSEED as well 2014-05-11 20:25:20 -07:00
scattered.c x86/cpufeatures: Correct spelling of the HWP_NOTIFY flag 2015-09-23 09:57:24 +02:00
topology.c
transmeta.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
umc.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
vmware.c