linux-kernel - Re: [PATCH v3 0/6] KVM: guest_memfd: Rework preparation/population flows in prep for in-place conversion

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Message-ID: <aWlXI3F6AyokM23l@google.com>
Date: Thu, 15 Jan 2026 13:07:47 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: kvm@...r.kernel.org, Michael Roth <michael.roth@....com>
Cc: linux-coco@...ts.linux.dev, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, thomas.lendacky@....com, pbonzini@...hat.com, 
	vbabka@...e.cz, ashish.kalra@....com, liam.merwick@...cle.com, 
	vannapurve@...gle.com, ackerleytng@...gle.com, aik@....com, 
	ira.weiny@...el.com, yan.y.zhao@...el.com, pankaj.gupta@....com, 
	David Hildenbrand <david@...nel.org>
Subject: Re: [PATCH v3 0/6] KVM: guest_memfd: Rework preparation/population
 flows in prep for in-place conversion

On Thu, Jan 15, 2026, Sean Christopherson wrote:
> On Thu, 08 Jan 2026 15:46:16 -0600, Michael Roth wrote:
> > This patchset is also available at:
> > 
> >   https://github.com/AMDESE/linux/tree/gmem-populate-rework-v3
> > 
> > and is based on top of kvm/next (0499add8efd7)
> > 
> > 
> > [...]
> 
> Applied to kvm-x86 gmem, with the tweaked logic I suggested.  Thanks!
> 
> [1/6] KVM: SVM: Fix a missing kunmap_local() in sev_gmem_post_populate()
>       https://github.com/kvm-x86/linux/commit/60b590de8b30
> [2/6] KVM: guest_memfd: Remove partial hugepage handling from kvm_gmem_populate()
>       https://github.com/kvm-x86/linux/commit/0726d3e164f1
> [3/6] KVM: guest_memfd: Remove preparation tracking
>       https://github.com/kvm-x86/linux/commit/188349ceb0f0
> [4/6] KVM: SEV: Document/enforce page-alignment for KVM_SEV_SNP_LAUNCH_UPDATE
>       https://github.com/kvm-x86/linux/commit/b2e648758038
> [5/6] KVM: TDX: Document alignment requirements for KVM_TDX_INIT_MEM_REGION
>       https://github.com/kvm-x86/linux/commit/894c3cc35b89
> [6/6] KVM: guest_memfd: GUP source pages prior to populating guest memory
>       https://github.com/kvm-x86/linux/commit/ba375af3d04d

New hashes after fixing the IS_ERR() goof:

[1/6] KVM: SVM: Fix a missing kunmap_local() in sev_gmem_post_populate()
      https://github.com/kvm-x86/linux/commit/60b590de8b30
[2/6] KVM: guest_memfd: Remove partial hugepage handling from kvm_gmem_populate()
      https://github.com/kvm-x86/linux/commit/6538b6221cc2
[3/6] KVM: guest_memfd: Remove preparation tracking
      https://github.com/kvm-x86/linux/commit/8622ef05709f
[4/6] KVM: SEV: Document/enforce page-alignment for KVM_SEV_SNP_LAUNCH_UPDATE
      https://github.com/kvm-x86/linux/commit/dcbcc2323c80
[5/6] KVM: TDX: Document alignment requirements for KVM_TDX_INIT_MEM_REGION
      https://github.com/kvm-x86/linux/commit/189fd1b059a9
[6/6] KVM: guest_memfd: GUP source pages prior to populating guest memory
      https://github.com/kvm-x86/linux/commit/2a62345b3052