| From | "Chang S. Bae" <> | Subject | [PATCH 13/23] x86/msr-index: Add MSRs for XFD | Date | Thu, 21 Oct 2021 15:55:17 -0700 |
| |
XFD introduces two MSRs:
- IA32_XFD to enable/disable a feature controlled by XFD
- IA32_XFD_ERR to expose the #NM trap handler which feature was tried to be used for the first time.
Both use the same xstate-component bitmap format, used by XCR0.
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> --- arch/x86/include/asm/msr-index.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index a7c413432b33..01e2650b9585 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -625,6 +625,8 @@ #define MSR_IA32_BNDCFGS_RSVD 0x00000ffc +#define MSR_IA32_XFD 0x000001c4 +#define MSR_IA32_XFD_ERR 0x000001c5 #define MSR_IA32_XSS 0x00000da0 #define MSR_IA32_APICBASE 0x0000001b -- 2.17.1
|