Re: [PATCH v7 05/27] x86/fpu/xstate: Add XSAVES system states for shadow stack

[Peter Zijlstra]

On Thu, Jun 06, 2019 at 01:06:24PM -0700, Yu-cheng Yu wrote:
> Intel Control-flow Enforcement Technology (CET) introduces the
> following MSRs.
> 
>     MSR_IA32_U_CET (user-mode CET settings),
>     MSR_IA32_PL3_SSP (user-mode shadow stack),
>     MSR_IA32_PL0_SSP (kernel-mode shadow stack),
>     MSR_IA32_PL1_SSP (Privilege Level 1 shadow stack),
>     MSR_IA32_PL2_SSP (Privilege Level 2 shadow stack).
> 
> Introduce them into XSAVES system states.
> 
> Signed-off-by: Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx>
> ---
>  arch/x86/include/asm/fpu/types.h            | 22 +++++++++++++++++++++
>  arch/x86/include/asm/fpu/xstate.h           |  4 +++-
>  arch/x86/include/uapi/asm/processor-flags.h |  2 ++
>  arch/x86/kernel/fpu/xstate.c                | 10 ++++++++++
>  4 files changed, 37 insertions(+), 1 deletion(-)

And yet, no changes to msr-index.h !?