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Commit 9b0971ca authored by Paolo Bonzini's avatar Paolo Bonzini
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KVM: SEV-ES: fix another issue with string I/O VMGEXITs



If the guest requests string I/O from the hypervisor via VMGEXIT,
SW_EXITINFO2 will contain the REP count.  However, sev_es_string_io
was incorrectly treating it as the size of the GHCB buffer in
bytes.

This fixes the "outsw" test in the experimental SEV tests of
kvm-unit-tests.

Cc: stable@vger.kernel.org
Fixes: 7ed9abfe ("KVM: SVM: Support string IO operations for an SEV-ES guest")
Reported-by: default avatarMarc Orr <marcorr@google.com>
Tested-by: default avatarMarc Orr <marcorr@google.com>
Reviewed-by: default avatarMarc Orr <marcorr@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 0985dba8
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