Re: [PATCH v3 2/4] KVM: TDX: Report CORE_CAPABILITIES as configurable
From: Binbin Wu
Date: Thu Sep 03 2026 - 04:22:55 EST
On 9/3/2026 2:10 PM, Kishen Maloor wrote:
> On 9/2/26 7:22 PM, Binbin Wu wrote:
>> On 9/3/2026 1:43 AM, Kishen Maloor wrote:
>>> On 8/26/26 8:18 PM, Binbin Wu wrote:
>> ...
>>
>> Actually this is the #VE reduction on fixed-1 bit, which changes a previous fixed-1
>> bit to directly configurable.
>> There are several cases of this category, i.e. MCA/MCE/MTRR/CORE_CAPABILITIES.
>> However, CORE_CAPABILITIES is the only case that KVM doesn't support for non-TDX
>> VMs
>> I will add these info to the change log.
>
>
> The cover letter highlights the deprecation case, but it sounds like
> you hit this now due to #VE reduction. Is further #VE reduction expected?
> If this is altogether rare, then yeah, added measures aren't necessary.
No new #VE reductions are expected.