Re: [PATCH v3 2/8] KVM:CPUID: Define CET CPUID bits and CR4.CET master enable bit.
From: Jim Mattson
Date: Tue Feb 26 2019 - 14:49:15 EST
On Mon, Feb 25, 2019 at 10:32 PM Yang Weijiang <weijiang.yang@xxxxxxxxx> wrote:
> Guest queries CET SHSTK and IBT support by CPUID.(EAX=0x7,ECX=0),
> in return, ECX[bit 7] corresponds to SHSTK feature, and EDX[bit 20]
> corresponds to IBT feature.
> CR4.CET[bit 23] is CET master enable bit, it controls CET feature
> availability in guest OS.
> Note: Although SHSTK or IBT can be enabled independently,
> either of the features is controlled by CR4.CET.
> Signed-off-by: Zhang Yi Z <yi.z.zhang@xxxxxxxxxxxxxxx>
> Signed-off-by: Yang Weijiang <weijiang.yang@xxxxxxxxx>
Am I missing something? X86_CR4_CET and X86_FEATURE_SHSTK and
X86_FEATURE_IBT don't appear to be defined in Linus' tree.