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| author | Andi Kleen | 2008-01-30 13:33:20 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2008-01-30 13:33:20 +0100 |
| commit | 7d851c8d3db0f79b92c8b14361779ede8acd2488 (patch) | |
| tree | e1588dcdb8c7db76478d484ece634453e2c3541c /include/asm-x86/cpufeature.h | |
| parent | x86: fill in missing pv_mmu_ops entries for PAGETABLE_LEVELS >= 3 (diff) | |
| download | kernel-qcow2-linux-7d851c8d3db0f79b92c8b14361779ede8acd2488.tar.gz kernel-qcow2-linux-7d851c8d3db0f79b92c8b14361779ede8acd2488.tar.xz kernel-qcow2-linux-7d851c8d3db0f79b92c8b14361779ede8acd2488.zip | |
x86: add framework to disable CPUID bits on the command line
There are already various options to disable specific cpuid bits
on the command line. They all use their own variable. Add a generic
mask to make this easier in the future.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/cpufeature.h')
| -rw-r--r-- | include/asm-x86/cpufeature.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-x86/cpufeature.h b/include/asm-x86/cpufeature.h index 29727bf0e177..b8f53f869e1f 100644 --- a/include/asm-x86/cpufeature.h +++ b/include/asm-x86/cpufeature.h @@ -131,6 +131,10 @@ #define set_cpu_cap(c, bit) set_bit(bit, (unsigned long *)((c)->x86_capability)) #define clear_cpu_cap(c, bit) clear_bit(bit, (unsigned long *)((c)->x86_capability)) +#define setup_clear_cpu_cap(bit) do { \ + clear_cpu_cap(&boot_cpu_data, bit); \ + set_bit(bit, cleared_cpu_caps); \ +} while (0) #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU) #define cpu_has_vme boot_cpu_has(X86_FEATURE_VME) |