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linux/arch/x86/kernel/cpu
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Steven Rostedt 5b2bdbc845 x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too 
Commit:

   1e02ce4ccc ("x86: Store a per-cpu shadow copy of CR4")

added a shadow CR4 such that reads and writes that do not
modify the CR4 execute much faster than always reading the
register itself.

The change modified cpu_init() in common.c, so that the
shadow CR4 gets initialized before anything uses it.

Unfortunately, there's two cpu_init()s in common.c. There's
one for 64-bit and one for 32-bit. The commit only added
the shadow init to the 64-bit path, but the 32-bit path
needs the init too.

Link: http://lkml.kernel.org/r/20150227125208.71c36402@gandalf.local.home Fixes: 1e02ce4ccc "x86: Store a per-cpu shadow copy of CR4"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150227145019.2bdd4354@gandalf.local.home
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-28 08:04:20 +01:00
..
mcheck Fix regression - functions on the mce notifier chain should 2015-02-17 17:03:07 -08:00
microcode * Two fixes hardening microcode data handling. (Quentin Casasnovas) 2015-02-19 13:32:42 +01:00
mtrr x86: Store a per-cpu shadow copy of CR4 2015-02-04 12:10:42 +01:00
.gitignore
amd.c Merge branch 'perf/hw_breakpoints' into perf/core 2015-01-28 15:48:59 +01:00
bugs.c x86: Get rid of ->hard_math and all the FPU asm fu 2013-06-06 14:32:04 -07:00
bugs_64.c
centaur.c x86: Remove CONFIG_X86_OOSTORE 2014-03-11 10:16:18 -07:00
common.c x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too 2015-02-28 08:04:20 +01:00
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 x86: Correctly detect hypervisor 2013-08-05 06:35:33 -07:00
intel.c x86/cpu/intel: Fix trivial typo in intel_tlb_table[] 2015-02-22 08:55:58 +01:00
intel_cacheinfo.c x86: use %*pb[l] to print bitmaps including cpumasks and nodemasks 2015-02-13 21:21:37 -08:00
Makefile x86/build: Clean auto-generated processor feature files 2014-12-23 15:37:06 +01:00
match.c x86: align x86 arch with generic CPU modalias handling 2014-02-18 12:45:38 -08:00
mkcapflags.sh x86: Fix mkcapflags.sh bash-ism 2014-12-23 15:34:57 +01:00
mshyperv.c x86, hyperv: Mark the Hyper-V clocksource as being continuous 2015-01-20 14:36:25 +01:00
perf_event.c perf/x86: Add /sys/devices/cpu/rdpmc=2 to allow rdpmc for all tasks 2015-02-04 12:10:49 +01:00
perf_event.h perf/x86: Only allow rdpmc if a perf_event is mapped 2015-02-04 12:10:47 +01:00
perf_event_amd.c x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
perf_event_amd_ibs.c perf/x86/amd/ibs: Update IBS MSRs and feature definitions 2014-11-12 15:12:32 +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_intel.c perf/x86/intel: Add model number for Airmont 2015-01-28 13:17:32 +01:00
perf_event_intel_ds.c perf/x86/intel: Fix bug for "cycles:p" and "cycles:pp" on SLM 2015-01-16 09:06:59 +01:00
perf_event_intel_lbr.c x86: Remove arbitrary instruction size limit in instruction decoder 2014-11-18 00:58:52 +01:00
perf_event_intel_rapl.c perf/rapl: Fix crash in rapl_scale() 2015-01-28 13:04:35 +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_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/uncore/hsw-ep: Handle systems with only two SBOXes 2015-01-09 11:12:30 +01:00
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
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 support for Intel HWP feature detection. 2014-11-12 00:04:37 +01:00
topology.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
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 x86: Correctly detect hypervisor 2013-08-05 06:35:33 -07:00