Re: [PATCH v3 00/21] Enable CET Virtualization

Sean Christopherson
2023-06-16T00:00:55Z

On Thu, Jun 15, 2023, Sean Christopherson wrote:
> Your cover letter from v2 back in April said the same thing. Why hasn't the patch
> been posted? And what exactly is the issue? IIUC, setting CR4.CET with
> MSR_IA32_S_CET=0 and MSR_IA32_U_CET=0 should be a nop, which suggests that there's
> a KVM bug. And if that's the case, the next obvious questions is, why are you
> posting known buggy code?

Ah, is the problem that the test doesn't set CR0.WP as required by CR4.CET=1?