KVM: SEV: Return appropriate error codes if SEV-ES scratch setup fails

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[ Upstream commit 75236f5f22 ]

Return appropriate error codes if setting up the GHCB scratch area for an
SEV-ES guest fails.  In particular, returning -EINVAL instead of -ENOMEM
when allocating the kernel buffer could be confusing as userspace would
likely suspect a guest issue.

Fixes: 8f423a80d2 ("KVM: SVM: Support MMIO for an SEV-ES guest")
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211109222350.2266045-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Sean Christopherson 2021-11-09 22:23:49 +00:00 • committed by Greg Kroah-Hartman

parent a246d92dda

commit 7012eb0e52

1 changed files with 17 additions and 13 deletions

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arch/x86/kvm/svm/sev.c

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