Re: [PATCH 5.15.y v3 3/7] KVM: x86/mmu: Derive shadow MMU page role from parent

[Kenta Akagi]

On 2026/09/26 3:48, Sasha Levin wrote:
>> I vote to backport the relevant upstream commits.  Reviewing this without those
>> commits is a pain.  I think it's these, to get fairly clean cherry-picks?
>>
>>   dc1ce45575b3401102568dd60ba8894849d1d64b KVM: MMU: update comment on the number of page role combinations
>>   41e35604eaff2266ba8523787ebe99c5ca4c4045 KVM: X86: Remove useless code to set role.gpte_is_8_bytes when role.direct
>>   b46a13cb7ea1137b2e01dfaafcacd5cd79db8390 KVM: X86: Calculate quadrant when !role.gpte_is_8_bytes
>>   bb3b394d35e80d7a58ce015191e4960a13f54ba5 KVM: X86: Rename gpte_is_8_bytes to has_4_byte_gpte and invert the direction
> 
> Agreed. Those four apply to 5.15 in that order without conflicts.
> 
> Kenta, could you send a v4 that starts with them and then carries 3/7 and
> 4/7 in their upstream has_4_byte_gpte form? 3/7 doesn't apply on top of
> them as it is now.
Hi Sasha, Sean,

Thank you for the review and suggestion. 
Understood, I'll test and send v4.

Thanks,
Akagi