tree cd975d129d4ce75408f5e5394815eeb674fb6895
parent a955cad84cdaffa282b3cf8f5ce69e9e5655e585
author Sean Christopherson <seanjc@google.com> 1636496629 +0000
committer Paolo Bonzini <pbonzini@redhat.com> 1638691323 -0500

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

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: 8f423a80d299 ("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>