Re: [PATCH v21 05/26] x86/fpu/xstate: Introduce CET MSR and XSAVES supervisor states
From: Borislav Petkov <bp@alien8.de>
Date: 2021-02-24 15:49:27
Also in:
linux-api, linux-arch, linux-mm, lkml
On Wed, Feb 17, 2021 at 02:27:09PM -0800, Yu-cheng Yu wrote:
quoted hunk ↗ jump to hunk
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index 546d6ecf0a35..fae6b3ea1f6d 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h@@ -933,4 +933,23 @@ #define MSR_VM_IGNNE 0xc0010115 #define MSR_VM_HSAVE_PA 0xc0010117 +/* Control-flow Enforcement Technology MSRs */ +#define MSR_IA32_U_CET 0x6a0 /* user mode cet setting */ +#define MSR_IA32_S_CET 0x6a2 /* kernel mode cet setting */ +#define CET_SHSTK_EN BIT_ULL(0) +#define CET_WRSS_EN BIT_ULL(1) +#define CET_ENDBR_EN BIT_ULL(2) +#define CET_LEG_IW_EN BIT_ULL(3) +#define CET_NO_TRACK_EN BIT_ULL(4) +#define CET_SUPPRESS_DISABLE BIT_ULL(5) +#define CET_RESERVED (BIT_ULL(6) | BIT_ULL(7) | BIT_ULL(8) | BIT_ULL(9)) +#define CET_SUPPRESS BIT_ULL(10) +#define CET_WAIT_ENDBR BIT_ULL(11) + +#define MSR_IA32_PL0_SSP 0x6a4 /* kernel shadow stack pointer */ +#define MSR_IA32_PL1_SSP 0x6a5 /* ring-1 shadow stack pointer */ +#define MSR_IA32_PL2_SSP 0x6a6 /* ring-2 shadow stack pointer */ +#define MSR_IA32_PL3_SSP 0x6a7 /* user shadow stack pointer */ +#define MSR_IA32_INT_SSP_TAB 0x6a8 /* exception shadow stack table */
When you look at the formatting in that file and the MSR numbers in it, what
stops you from formatting your addition the same way?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette