Fenghua Yu de5397ad5b x86, cpu: Enable/disable Supervisor Mode Execution Protection ... Enable/disable newly documented SMEP (Supervisor Mode Execution Protection) CPU feature in kernel. CR4.SMEP (bit 20) is 0 at power-on. If the feature is supported by CPU (X86_FEATURE_SMEP), enable SMEP by setting CR4.SMEP. New kernel option nosmep disables the feature even if the feature is supported by CPU. [ hpa: moved the call to setup_smep() until after the vendor-specific initialization; that ensures that CPUID features are unmasked. We will still run it before we have userspace (never mind uncontrolled userspace). ] Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> LKML-Reference: <1305157865-31727-1-git-send-email-fenghua.yu@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>		2011-05-17 21:22:00 -07:00
..
cpufreq	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-03-18 10:45:21 -07:00
mcheck	rcu: create new rcu_access_index() and use in mce	2011-04-01 07:27:31 -07:00
mtrr	x86, mtrr, pat: Fix one cpu getting out of sync during resume	2011-03-29 16:17:42 -07:00
.gitignore
amd.c	x86, AMD: Fix APIC timer erratum 400 affecting K8 Rev.A-E processors	2011-05-01 18:55:51 +02:00
bugs_64.c	x86/cpu: Clean up various files a bit	2009-07-11 11:24:09 +02:00
bugs.c	x86: Avoid check hlt for newer cpus	2010-05-07 15:31:17 -07:00
centaur.c	x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes	2009-11-23 11:59:53 -08:00
common.c	x86, cpu: Enable/disable Supervisor Mode Execution Protection	2011-05-17 21:22:00 -07:00
cpu.h	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 13:18:36 -07:00
cyrix.c	x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes	2009-11-23 11:59:53 -08:00
hypervisor.c	Introduce CONFIG_XEN_PVHVM compile option	2010-07-29 11:11:33 -07:00
intel_cacheinfo.c	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-03-15 19:49:10 -07:00
intel.c	x86: Unify CPU -> NUMA node mapping between 32 and 64bit	2011-01-28 14:54:09 +01:00
Makefile	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-08-06 10:07:34 -07:00
mkcapflags.pl
mshyperv.c	x86: Export the symbol ms_hyperv	2010-07-08 14:12:03 -07:00
perf_event_amd.c	perf, x86: Fix AMD family 15h FPU event constraints	2011-04-19 10:07:55 +02:00
perf_event_intel_ds.c	perf, x86: Use INTEL_*_CONSTRAINT() for all PEBS event constraints	2011-03-16 14:04:12 +01:00
perf_event_intel_lbr.c	perf, x86: Clean up debugctlmsr bit definitions	2010-03-26 09:41:03 +01:00
perf_event_intel.c	perf events, x86: Fix Intel Nehalem and Westmere last level cache event definitions	2011-05-06 11:24:48 +02:00
perf_event_p4.c	perf, x86, nmi: Move LVT un-masking into irq handlers	2011-04-27 17:59:11 +02:00
perf_event_p6.c	perf, x86: Store perfctr msr addresses in config_base/event_base	2011-02-16 13:30:52 +01:00
perf_event.c	perf, x86, nmi: Move LVT un-masking into irq handlers	2011-04-27 17:59:11 +02:00
perfctr-watchdog.c	perf, x86: Add new AMD family 15h msrs to perfctr reservation code	2011-02-16 13:30:50 +01:00
powerflags.c
proc.c	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-14 07:57:32 -07:00
scattered.c	Merge branch 'x86-amd-nb-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 13:01:08 -07:00
sched.c	sched: x86: Name old_perf in a unique way	2009-09-16 11:21:07 +02:00
topology.c	x86, cpu: Split addon_cpuid_features.c	2010-07-19 19:02:41 -07:00
transmeta.c	x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes	2009-11-23 11:59:53 -08:00
umc.c	x86: move various CPU initialization objects into .cpuinit.rodata	2009-03-12 13:13:07 +01:00
vmware.c	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00