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| author | Yinghai Lu <yinghai@kernel.org> | 2009-05-09 23:47:42 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-11 10:57:24 +0200 |
| commit | 3e0c373749d7eb5b354ac0b043f2b2cdf84eefef (patch) | |
| tree | 473870b2f527ce227cb729db35dbe226ce95a7d1 /arch/x86/include/asm/processor.h | |
| parent | 3969c52d4d2fef5a4b9e3ab0e51b3901e1cc8b83 (diff) | |
| download | op-kernel-dev-3e0c373749d7eb5b354ac0b043f2b2cdf84eefef.zip op-kernel-dev-3e0c373749d7eb5b354ac0b043f2b2cdf84eefef.tar.gz | |
x86: clean up and fix setup_clear/force_cpu_cap handling
setup_force_cpu_cap() only have one user (Xen guest code),
but it should not reuse cleared_cpu_cpus, otherwise it
will have problems on SMP.
Need to have a separate cpu_cpus_set array too, for forced-on
flags, beyond the forced-off flags.
Also need to setup handling before all cpus caps are combined.
[ Impact: fix the forced-set CPU feature flag logic ]
Cc: H. Peter Anvin <hpa@linux.intel.com>
Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/processor.h')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index c2cceae..fed93fe 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -135,7 +135,8 @@ extern struct cpuinfo_x86 boot_cpu_data; extern struct cpuinfo_x86 new_cpu_data; extern struct tss_struct doublefault_tss; -extern __u32 cleared_cpu_caps[NCAPINTS]; +extern __u32 cpu_caps_cleared[NCAPINTS]; +extern __u32 cpu_caps_set[NCAPINTS]; #ifdef CONFIG_SMP DECLARE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info); |
