On Fri, Apr 16, 2021 at 06:10:30PM +0200, Borislav Petkov wrote: > On Fri, Apr 16, 2021 at 06:40:55PM +0300, Kirill A. Shutemov wrote: > > Provide basic helpers, KVM_FEATURE, CPUID flag and a hypercall. > > > > Host side doesn't provide the feature yet, so it is a dead code for now. > > > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > > --- > > arch/x86/include/asm/cpufeatures.h | 1 + > > arch/x86/include/asm/kvm_para.h | 5 +++++ > > arch/x86/include/uapi/asm/kvm_para.h | 3 ++- > > arch/x86/kernel/kvm.c | 17 +++++++++++++++++ > > include/uapi/linux/kvm_para.h | 3 ++- > > 5 files changed, 27 insertions(+), 2 deletions(-) > > > > diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h > > index 84b887825f12..d8f3d2619913 100644 > > --- a/arch/x86/include/asm/cpufeatures.h > > +++ b/arch/x86/include/asm/cpufeatures.h > > @@ -238,6 +238,7 @@ > > #define X86_FEATURE_VMW_VMMCALL ( 8*32+19) /* "" VMware prefers VMMCALL hypercall instruction */ > > #define X86_FEATURE_SEV_ES ( 8*32+20) /* AMD Secure Encrypted Virtualization - Encrypted State */ > > #define X86_FEATURE_VM_PAGE_FLUSH ( 8*32+21) /* "" VM Page Flush MSR is supported */ > > +#define X86_FEATURE_KVM_MEM_PROTECTED ( 8*32+22) /* "" KVM memory protection extension */ > > That feature bit is still unused. Sorry. Will drop it. -- Kirill A. Shutemov
