OpenCloudOS-Kernel/arch/x86/kernel/cpu
H. Peter Anvin 066941bd4e x86: unmask CPUID levels on Intel CPUs
Impact: Fixes crashes with misconfigured BIOSes on XSAVE hardware

Avuton Olrich reported early boot crashes with v2.6.28 and
bisected it down to dc1e35c6e9
("x86, xsave: enable xsave/xrstor on cpus with xsave support").

If the CPUID limit bit in MSR_IA32_MISC_ENABLE is set, clear it to
make all CPUID information available.  This is required for some
features to work, in particular XSAVE.

Reported-and-bisected-by: Avuton Olrich <avuton@gmail.com>
Tested-by: Avuton Olrich <avuton@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-22 09:24:02 +01:00
..
cpufreq fix: crash: IP: __bitmap_intersects+0x48/0x73 2009-01-20 00:17:01 +01:00
mcheck x86: fix section mismatch warnings in mcheck/mce_amd_64.c 2009-01-07 12:23:35 +01:00
mtrr x86: mtrr fix debug boot parameter 2009-01-21 12:26:42 +01:00
.gitignore Update .gitignore files for generated targets 2008-10-20 11:24:31 -07:00
Makefile Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-12-28 12:21:10 -08:00
addon_cpuid_features.c x86: fix intel x86_64 llc_shared_map/cpu_llc_id anomolies 2008-12-19 09:13:50 +01:00
amd.c x86: support always running TSC on Intel CPUs 2008-12-16 21:02:50 +01:00
bugs.c x86: fdiv bug detection fix 2008-07-31 23:56:27 +02:00
bugs_64.c x86: move bugs_64.c to cpu/bugs_64.c 2008-06-03 14:43:00 -07:00
centaur.c x86: move mtrr cpu cap setting early in early_init_xxxx 2008-09-06 17:50:55 +02:00
centaur_64.c x86: centaur_64.c remove duplicated setting of CONSTANT_TSC 2008-09-10 08:21:06 +02:00
cmpxchg.c x86: move cmpxchg fallbacks to a generic place 2008-08-18 16:05:47 +02:00
common.c x86: cleanup remaining cpumask_t ops in smpboot code 2009-01-04 15:39:26 +01:00
cpu.h x86: remove duplicated get_model_name() calling 2008-09-06 14:09:12 +02:00
cyrix.c x86: move mtrr cpu cap setting early in early_init_xxxx 2008-09-06 17:50:55 +02:00
hypervisor.c x86: hypervisor - fix sparse warnings 2008-11-23 11:11:52 +01:00
intel.c x86: unmask CPUID levels on Intel CPUs 2009-01-22 09:24:02 +01:00
intel_cacheinfo.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask 2009-01-03 18:53:31 +01:00
mkcapflags.pl x86: generate names for /proc/cpuinfo from <asm/cpufeature.h> 2008-08-27 19:23:22 -07:00
perfctr-watchdog.c ftrace: mark lapic_wd_event() notrace 2008-10-14 10:34:36 +02:00
powerflags.c x86: generate names for /proc/cpuinfo from <asm/cpufeature.h> 2008-08-27 19:23:22 -07:00
proc.c x86/proc: fix /proc/cpuinfo cpu offline bug 2008-10-22 14:29:37 +02:00
transmeta.c x86: move transmeta cap read to early_init_transmeta() 2008-09-14 14:09:14 +02:00
umc.c x86: remove cpu_vendor_dev 2008-09-04 21:09:45 +02:00
vmware.c x86: vmware - fix sparse warnings 2008-11-23 11:02:36 +01:00