Re: [PATCH v2 2/2] KVM: nVMX: Decouple EPT RWX bits from EPT Violation protection bits

[Nikolay Borisov]

On 27.02.25 г. 2:07 ч., Sean Christopherson wrote:
> Define independent macros for the RWX protection bits that are enumerated
> via EXIT_QUALIFICATION for EPT Violations, and tie them to the RWX bits in
> EPT entries via compile-time asserts.  Piggybacking the EPTE defines works
> for now, but it creates holes in the EPT_VIOLATION_xxx macros and will
> cause headaches if/when KVM emulates Mode-Based Execution (MBEC), or any
> other features that introduces additional protection information.
>
> Opportunistically rename EPT_VIOLATION_RWX_MASK to EPT_VIOLATION_PROT_MASK
> so that it doesn't become stale if/when MBEC support is added.
>
> No functional change intended.
>
> Cc: Jon Kohler <jon@xxxxxxxxxxx>
> Cc: Nikolay Borisov <nik.borisov@xxxxxxxx>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>

Reviewed-by: Nikolay Borisov <nik.borisov@xxxxxxxx>