Messages in this thread Patch in this message | | | From | "Chang S. Bae" <> | Subject | [RFC PATCH v2 04/11] x86/msr-index: Add MSRs for Key Locker internal key | Date | Fri, 14 May 2021 13:15:01 -0700 |
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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@intel.com> Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org --- 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 742d89a00721..f8e78782c8f4 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -935,4 +935,10 @@ #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
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