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hw/i386/sev: Use legacy SEV VM types for older machine types

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Newer 9.1 machine types will default to using the KVM_SEV_INIT2 API for
creating SEV/SEV-ES going forward. However, this API results in guest
measurement changes which are generally not expected for users of these
older guest types and can cause disruption if they switch to a newer
QEMU/kernel version. Avoid this by continuing to use the older
KVM_SEV_INIT/KVM_SEV_ES_INIT APIs for older machine types.

Signed-off-by: Michael Roth <michael.roth@amd.com>
Message-ID: <20240409230743.962513-4-michael.roth@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Michael Roth 2024-04-09 18:07:43 -05:00 • committed by Paolo Bonzini
parent 023267334d
commit ea7fbd3753
2 changed files with 2 additions and 0 deletions
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target/i386/sev.c
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@ -1417,6 +1417,7 @@ sev_guest_instance_init(Object *obj)
object_property_add_uint32_ptr(obj, "reduced-phys-bits",
&sev->reduced_phys_bits,
OBJ_PROP_FLAG_READWRITE);
object_apply_compat_props(obj);
}
/* sev guest info */