Re: [PATCH 03/10] qemu: fail if virQEMUCapsProbeQMPSEVCapabilities fails

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On Wed, Jun 13, 2018 at 02:15:53PM +0100, Daniel P. Berrangé wrote:
On Tue, Jun 12, 2018 at 02:00:17PM +0200, Ján Tomko wrote:
Do not mask the errors.

If we'd expect query-sev-capabilities to fail, we should not
call it in the first place.

Signed-off-by: Ján Tomko <jtomko@xxxxxxxxxx>
---
 src/qemu/qemu_capabilities.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 7a245a58bc..35d46c465d 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -4105,7 +4105,7 @@ virQEMUCapsInitQMPMonitor(virQEMUCapsPtr qemuCaps,
     /* Probe for SEV capabilities */
     if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SEV_GUEST)) {
         if (virQEMUCapsProbeQMPSEVCapabilities(qemuCaps, mon) < 0)
-            virQEMUCapsClear(qemuCaps, QEMU_CAPS_SEV_GUEST);
+            goto cleanup;

Sadly we cannot do this because this capability cannot be probed
properly - both the object QEMU_CAPS_SEV_GUEST is based on and the
query-sev-capabilities are present even if QEMU does not support this,
but actually running the command fails:

internal error: unable to execute QEMU command 'query-sev-capabilities': SEV feature is not available

Jano

     }

     ret = 0;

Reviewed-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>


Regards,
Daniel
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