Re: [PATCH v2 0/2] KVM: x86/mmu: Fill memory_fault for unresolvable guest page faults

[Sean Christopherson]

On Sun, 20 Sep 2026 07:24:57 +0000, mike.malyshev@xxxxxxxxx wrote:
> From: Mikhail Malyshev <mike.malyshev@xxxxxxxxx>
> 
> When KVM cannot resolve a guest page fault, kvm_handle_error_pfn() returns
> a bare -EFAULT.  KVM_CAP_MEMORY_FAULT_INFO documents the opposite: that
> KVM_RUN fills kvm_run.memory_fault "if KVM cannot resolve a guest page
> fault VM-Exit, e.g. if there is a valid memslot but no backing VMA for the
> corresponding host virtual address".
> 
> [...]

Applied to kvm-x86 mmu, thanks!

[1/2] KVM: x86/mmu: Report a memory fault exit when the fault handler EFAULTs
      https://github.com/kvm-x86/linux/commit/64f1cf288440
[2/2] KVM: x86/mmu: Convert can't-happen fault path EFAULTs to KVM_BUG_ON() + -EIO
      https://github.com/kvm-x86/linux/commit/98a843669196

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https://github.com/kvm-x86/linux/tree/next