Key Locker internal key in a CPU state can be backed up in a platform register. The backup can be also copied back to a CPU state. This mechanism is useful to restore the key (after system sleep). Add MSRs for the internal key backup, copy, and status check. Signed-off-by: Chang S. Bae <chang.seok.bae@xxxxxxxxx> Cc: x86@xxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx --- arch/x86/include/asm/msr-index.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index 972a34d93505..c0b9157806f7 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -922,4 +922,10 @@ #define MSR_VM_IGNNE 0xc0010115 #define MSR_VM_HSAVE_PA 0xc0010117 +/* MSRs for Key Locker Internal (Wrapping) Key management */ +#define MSR_IA32_COPY_LOCAL_TO_PLATFORM 0x00000d91 +#define MSR_IA32_COPY_PLATFORM_TO_LOCAL 0x00000d92 +#define MSR_IA32_COPY_STATUS 0x00000990 +#define MSR_IA32_IWKEYBACKUP_STATUS 0x00000991 + #endif /* _ASM_X86_MSR_INDEX_H */ -- 2.17.1
