linux/arch/x86/kernel/cpu
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
microcode * Two fixes hardening microcode data handling. (Quentin Casasnovas) 2015-02-19 13:32:42 +01:00
mtrr
.gitignore
amd.c
bugs.c
bugs_64.c
centaur.c
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
cyrix.c
hypervisor.c
intel.c x86/cpu/intel: Fix trivial typo in intel_tlb_table[] 2015-02-22 08:55:58 +01:00
intel_cacheinfo.c
Makefile
match.c
mkcapflags.sh
mshyperv.c
perf_event.c
perf_event.h
perf_event_amd.c
perf_event_amd_ibs.c
perf_event_amd_iommu.c
perf_event_amd_iommu.h
perf_event_amd_uncore.c
perf_event_intel.c
perf_event_intel_ds.c
perf_event_intel_lbr.c
perf_event_intel_rapl.c
perf_event_intel_uncore.c
perf_event_intel_uncore.h
perf_event_intel_uncore_nhmex.c
perf_event_intel_uncore_snb.c
perf_event_intel_uncore_snbep.c
perf_event_knc.c
perf_event_p4.c
perf_event_p6.c
perfctr-watchdog.c
powerflags.c
proc.c
rdrand.c
scattered.c
topology.c
transmeta.c
umc.c
vmware.c