Re: [PATCH v16 42/51] KVM: x86: Define Control Protection Exception (#CP) vector

Binbin Wu
2025-09-22T08:29:41Z

On 9/20/2025 6:32 AM, Sean Christopherson wrote:
> Add a CP_VECTOR definition for CET's Control Protection Exception (#CP),
> along with human friendly formatting for trace_kvm_inj_exception().
>
> Signed-off-by: Sean Christopherson <seanjc@google.com>

Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>

> ---
> arch/x86/include/uapi/asm/kvm.h | 1 +
> arch/x86/kvm/trace.h | 2 +-
> 2 files changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/include/uapi/asm/kvm.h b/arch/x86/include/uapi/asm/kvm.h
> index 467116186e71..73e0e88a0a54 100644
> --- a/arch/x86/include/uapi/asm/kvm.h
> +++ b/arch/x86/include/uapi/asm/kvm.h
> @@ -35,6 +35,7 @@
> #define MC_VECTOR 18
> #define XM_VECTOR 19
> #define VE_VECTOR 20
> +#define CP_VECTOR 21
>
> /* Select x86 specific features in <linux/kvm.h> */
> #define __KVM_HAVE_PIT
> diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
> index 06da19b370c5..322913dda626 100644
> --- a/arch/x86/kvm/trace.h
> +++ b/arch/x86/kvm/trace.h
> @@ -462,7 +462,7 @@ TRACE_EVENT(kvm_inj_virq,
> #define kvm_trace_sym_exc \
> EXS(DE), EXS(DB), EXS(BP), EXS(OF), EXS(BR), EXS(UD), EXS(NM), \
> EXS(DF), EXS(TS), EXS(NP), EXS(SS), EXS(GP), EXS(PF), EXS(MF), \
> - EXS(AC), EXS(MC), EXS(XM), EXS(VE)
> + EXS(AC), EXS(MC), EXS(XM), EXS(VE), EXS(CP)
>
> /*
> * Tracepoint for kvm interrupt injection: