Re: [PATCH 6.12.y] KVM: VMX: Fix check for valid GVA on an EPT violation

[Sean Christopherson <seanjc@google.com>]

On Sun, Nov 23, 2025, Sukrit.Bhatnagar@sony.com wrote:
> On 2025-11-22 03:11, Sean Christopherson wrote:
> > 
> > No need for the manual "backport", commits that are tagged for stable@ are
> > automically pulled into LTS kernels so long as they apply cleanly (and obviously
> > don't cause problems).
>  
> 
> This commit did not apply cleanly to the 6.12-stable tree,
> as notified earlier by Greg's mail. 6.17-stable seemed to
> have no issues.
> 
> The function handle_ept_violation got some changes in v6.16
>   c8563d1b6998 ("KVM: VMX: Split out guts of EPT violation to common/exposed function")
> which moved the code from vmx/vmx.c to vmx/common.h.
> So, v6.16+ is ok, but not the earlier ones.
> 
> I think this manual backport commit is needed.
> Please let me know if my understanding is not correct.

Ah, your understanding is correct.  I saw that the commit was queue for 6.12 (and
landed in 6.12 as commit 3010739f53438) and assumed it was a clean backport.  But
I missed Sasha's Stable-dep-of magic intervention[2].

So this backport is _now_ unnecessary, but was necessary when you sent the patch.

Thanks for the backport and follow-up, much appreciated even though Sasha-bot
stole your thunder :-)

[1] https://lore.kernel.org/all/20251121130150.019304053@linuxfoundation.org
[2] https://lore.kernel.org/all/20251120181940.1924069-1-sashal@kernel.org