On 07/20/2012 09:10 PM, Andi Kleen wrote:
+ unsigned int *msr_ext_cpuid_mask) +{ + unsigned int msr, msr_ext; + + msr = msr_ext = 0; + + switch (c->x86_model) {You have to check the family too.+ + return msr; +} + +static void __cpuinit intel_mask_cpu_caps(struct cpuinfo_x86 *c) +{ + u32 low, high; + unsigned int msr_cpuid_mask, msr_ext_cpuid_mask; + + msr_cpuid_mask = intel_cpuid_mask_msr(c,&msr_ext_cpuid_mask); + if (msr_cpuid_mask) { + set_cpu_cap(c, X86_FEATURE_CPUIDMASK); + + rdmsr(msr_cpuid_mask, low, high);And please use rdmsrl(), rdmsr() is so 90ies Other than that patch looks good. I presume it will be useful for other things than just migration too. -Andi
Thank you for review, but we've decided to drop this since the kernel does not seem to be a suitable place for such "tweaking".
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