[PATCH v3 0/8] x86, KVM: Optimize SEV cache flushing

[Sean Christopherson]

On Wed, Jul 09, 2025, Borislav Petkov wrote:
> On Wed, Jul 09, 2025 at 09:25:35AM -0700, Sean Christopherson wrote:
> > On Thu, May 22, 2025, Sean Christopherson wrote:
> > > This is the combination of Kevin's WBNOINVD series[1] with Zheyun's targeted
> > > flushing series[2].  The combined goal is to use WBNOINVD instead of WBINVD
> > > when doing cached maintenance to prevent data corruption due to C-bit aliasing,
> > > and to reduce the number of cache invalidations by only performing flushes on
> > > CPUs that have entered the relevant VM since the last cache flush.
> > > 
> > > All of the non-KVM patches are frontloaded and based on v6.15-rc7, so that
> > > they can go through the tip tree (in a stable branch, please :-) ).
> > 
> > Tip tree folks, any feedback/thoughts on this series (patches 1-4 in particular)?
> > It'd be nice to get this into 6.17, and I'd really like land it by 6.18 at the
> > latest.
> 
> I'll take a look tomorrow.
> 
> If I queue 1-4, would you like an immutable branch to merge for the other 4?

Yes please, thanks!