Re: [PATCH v2] KVM: SEV: Return INVALID_INPUT on SNP req/resp buffer access failure

[Sean Christopherson]

On Wed, 23 Sep 2026 20:18:12 +0000, Jacky Li wrote:
> Currently, snp_handle_(ext_)guest_req() returns -EIO when
> kvm_{read/clear}_guest() fails while accessing guest-provided buffers.
> Returning -EIO causes KVM_RUN to exit to userspace, likely killing the VM.
> 
> Fix this by returning GHCB_HV_RESP_MALFORMED_INPUT with sub-error code
> GHCB_ERR_INVALID_INPUT to the guest and resuming the vCPU.
> 
> [...]

Applied to kvm-x86 svm, thanks!

[1/1] KVM: SEV: Return INVALID_INPUT on SNP req/resp buffer access failure
      https://github.com/kvm-x86/linux/commit/003892d6e802

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