diff options
| author | Sheng Yang <sheng@linux.intel.com> | 2010-06-13 17:29:39 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-01 10:46:37 +0300 |
| commit | 2d5b5a665508c60577c1088e0405850a965b6795 (patch) | |
| tree | 3549325770a39b0c7fd2b7f81aa6fa42295803e2 /arch/x86/include | |
| parent | 69b61833f7ce6e61e196c8a724e4d1278b24ac02 (diff) | |
KVM: x86: XSAVE/XRSTOR live migration support
This patch enable save/restore of xsave state.
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm.h | 22 | ||||
| -rw-r--r-- | arch/x86/include/asm/xsave.h | 7 |
2 files changed, 27 insertions, 2 deletions
diff --git a/arch/x86/include/asm/kvm.h b/arch/x86/include/asm/kvm.h index ff90055c7f0..4d8dcbdfc12 100644 --- a/arch/x86/include/asm/kvm.h +++ b/arch/x86/include/asm/kvm.h @@ -22,6 +22,8 @@ #define __KVM_HAVE_XEN_HVM #define __KVM_HAVE_VCPU_EVENTS #define __KVM_HAVE_DEBUGREGS +#define __KVM_HAVE_XSAVE +#define __KVM_HAVE_XCRS /* Architectural interrupt line count. */ #define KVM_NR_INTERRUPTS 256 @@ -299,4 +301,24 @@ struct kvm_debugregs { __u64 reserved[9]; }; +/* for KVM_CAP_XSAVE */ +struct kvm_xsave { + __u32 region[1024]; +}; + +#define KVM_MAX_XCRS 16 + +struct kvm_xcr { + __u32 xcr; + __u32 reserved; + __u64 value; +}; + +struct kvm_xcrs { + __u32 nr_xcrs; + __u32 flags; + struct kvm_xcr xcrs[KVM_MAX_XCRS]; + __u64 padding[16]; +}; + #endif /* _ASM_X86_KVM_H */ diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h index 29ee4e4c64c..32c36668fa7 100644 --- a/arch/x86/include/asm/xsave.h +++ b/arch/x86/include/asm/xsave.h @@ -13,8 +13,11 @@ #define FXSAVE_SIZE 512 -#define XSTATE_YMM_SIZE 256 -#define XSTATE_YMM_OFFSET (512 + 64) +#define XSAVE_HDR_SIZE 64 +#define XSAVE_HDR_OFFSET FXSAVE_SIZE + +#define XSAVE_YMM_SIZE 256 +#define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET) /* * These are the features that the OS can handle currently. |