* Fenghua Yu <[email protected]> wrote:
> On Thu, Apr 25, 2019 at 07:45:11AM +0200, Ingo Molnar wrote: > > > > * Fenghua Yu <[email protected]> wrote: > > > > > A new MSR_IA32_CORE_CAPABILITY (0xcf) is defined. Each bit in the MSR > > > enumerates a model specific feature. Currently bit 5 enumerates split > > > lock detection. When bit 5 is 1, split lock detection is supported. > > > When the bit is 0, split lock detection is not supported. > > > > > > Please check the latest Intel 64 and IA-32 Architectures Software > > > Developer's Manual for more detailed information on the MSR and the > > > split lock detection bit. > > > > > > Signed-off-by: Fenghua Yu <[email protected]> > > > --- > > > arch/x86/include/asm/msr-index.h | 3 +++ > > > 1 file changed, 3 insertions(+) > > > > > > diff --git a/arch/x86/include/asm/msr-index.h > > > b/arch/x86/include/asm/msr-index.h > > > index ca5bc0eacb95..f65ef6f783d2 100644 > > > --- a/arch/x86/include/asm/msr-index.h > > > +++ b/arch/x86/include/asm/msr-index.h > > > @@ -59,6 +59,9 @@ > > > #define MSR_PLATFORM_INFO_CPUID_FAULT_BIT 31 > > > #define MSR_PLATFORM_INFO_CPUID_FAULT > > > BIT_ULL(MSR_PLATFORM_INFO_CPUID_FAULT_BIT) > > > > > > +#define MSR_IA32_CORE_CAPABILITY 0x000000cf > > > +#define CORE_CAP_SPLIT_LOCK_DETECT BIT(5) /* Detect split lock > > > */ > > > > Please don't put comments into definitions. > > I'll remove the comment and change definitions of the MSR and the split lock > detection bit as following: > > +#define MSR_IA32_CORE_CAPABILITY 0x000000cf > +#define MSR_IA32_CORE_CAPABILITY_SPLIT_LOCK_DETECT_BIT 5 > +#define MSR_IA32_CORE_CAPABILITY_SPLIT_LOCK_DETECT > BIT(MSR_IA32_CORE_CAPABILITY_SPLIT_LOCK_DETECT_BIT) > > Are these right changes? I suspect it could be shortened to CORE_CAP as you (partly) did it originally. Thanks, Ingo
