AuxXxilium/linux_dsm_epyc7002
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ee38a90709
linux_dsm_epyc7002/arch/x86/kernel/cpu
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Borislav Petkov ee38a90709 x86/microcode: Disable builtin microcode loading on 32-bit for now 
Andy Shevchenko reported machine freezes when booting latest tip
on 32-bit setups. Problem is, the builtin microcode handling cannot
really work that early, when we haven't even enabled paging.

A proper fix would involve handling that case specially as every
other early 32-bit boot case in the microcode loader and would
require much more involved changes for which it is too late now,
more than a week before the upcoming merge window.

So, disable the builtin microcode loading on 32-bit for now.

Reported-and-tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
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/1433436928-31903-20-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-07 15:38:14 +02:00
..
mcheck Merge branch 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-04-13 13:33:20 -07:00
microcode x86/microcode: Disable builtin microcode loading on 32-bit for now 2015-06-07 15:38:14 +02:00
mtrr x86: mtrr: if: remove use of seq_printf return value 2015-04-15 16:35:24 -07:00
.gitignore
amd.c x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue 2015-04-26 17:57:38 -07:00
bugs_64.c
bugs.c
centaur.c x86: Remove CONFIG_X86_OOSTORE 2014-03-11 10:16:18 -07:00
common.c Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-04-14 14:37:47 -07:00
cpu.h x86/cpu: Track legacy CPU model data only on 32-bit kernels 2013-10-26 13:34:39 +02:00
cyrix.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
hypervisor.c
intel_cacheinfo.c x86/cpu/cacheinfo: Fix cache_get_priv_group() for Intel processors 2015-03-23 10:22:38 +01:00
intel_pt.h perf/x86/intel/pt: Add Intel PT PMU driver 2015-04-02 17:14:20 +02:00
intel.c x86/cpu/intel: Fix trivial typo in intel_tlb_table[] 2015-02-22 08:55:58 +01:00
Makefile perf/x86/intel/bts: Add BTS PMU driver 2015-04-02 17:14:21 +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: Mark the Hyper-V clocksource as being continuous 2015-01-20 14:36:25 +01:00
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/pt: Fix the 32-bit build 2015-04-02 17:58:45 +02:00
perf_event_intel_cqm.c perf: Remove type specific target pointers 2015-03-23 10:58:04 +01:00
perf_event_intel_ds.c perf/x86/intel: Fix Core2,Atom,NHM,WSM cycles:pp events 2015-04-17 09:58:47 +02:00
perf_event_intel_lbr.c perf/x86/intel: Avoid rewriting DEBUGCTL with the same value for LBRs 2015-04-02 17:33:20 +02:00
perf_event_intel_pt.c perf/x86/intel/pt: Fix and clean up error handling in pt_event_add() 2015-04-18 13:31:26 +02:00
perf_event_intel_rapl.c perf/x86/intel/rapl: Fix energy counter measurements but supporing per domain energy units 2015-04-17 09:58:56 +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: Update support for client uncore IMC PMU 2014-09-24 14:48:25 +02:00
perf_event_intel_uncore_snbep.c perf/x86/intel/uncore: Delete an unnecessary check before pci_dev_put() call 2015-02-18 17:01:42 +01:00
perf_event_intel_uncore.c perf/x86/intel/uncore: Move uncore_box_init() out of driver initialization 2015-01-28 13:04:34 +01:00
perf_event_intel_uncore.h perf/x86/intel/uncore: Move uncore_box_init() out of driver initialization 2015-01-28 13:04:34 +01:00
perf_event_intel.c perf/x86/intel: Add Broadwell support for the LBR callstack 2015-04-17 09:59:07 +02:00
perf_event_knc.c x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
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 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-04-14 14:37:47 -07:00
perf_event.h perf/x86: Fix hw_perf_event::flags collision 2015-04-17 09:50:43 +02:00
perfctr-watchdog.c
powerflags.c
proc.c x86: Replace seq_printf() with seq_puts() 2014-12-08 11:48:15 +01:00
rdrand.c x86, rdrand: When nordrand is specified, disable RDSEED as well 2014-05-11 20:25:20 -07:00
scattered.c x86: Add Intel Processor Trace (INTEL_PT) cpu feature detection 2015-04-02 17:14:18 +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