[libvirt PATCH 10/20] qemu: Introduce virQEMUCapsHaveAccel

[Andrea Bolognani <abologna@xxxxxxxxxx>]

From: Roman Bolshakov <r.bolshakov@xxxxxxxxx>

The function should be used to check if qemu capabilities include a
hardware acceleration, i.e. accel is not TCG.

Signed-off-by: Roman Bolshakov <r.bolshakov@xxxxxxxxx>
Signed-off-by: Andrea Bolognani <abologna@xxxxxxxxxx>
Tested-by: Brad Laue <brad@xxxxxxxxxx>
Reviewed-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
---
 src/qemu/qemu_capabilities.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 85dd36e274..79e80dd288 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -810,6 +810,13 @@ virQEMUCapsTypeIsAccelerated(virDomainVirtType type)
 }
 
 
+static bool
+virQEMUCapsHaveAccel(virQEMUCaps *qemuCaps)
+{
+    return virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM);
+}
+
+
 /* Checks whether a domain with @guest arch can run natively on @host.
  */
 bool
@@ -5031,7 +5038,7 @@ virQEMUCapsIsValid(void *data,
         return false;
     }
 
-    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
+    if (virQEMUCapsHaveAccel(qemuCaps)) {
         if (STRNEQ_NULLABLE(priv->hostCPUSignature, qemuCaps->hostCPUSignature)) {
             VIR_DEBUG("Outdated capabilities for '%s': host CPU changed "
                       "('%s' vs '%s')",
@@ -5065,7 +5072,9 @@ virQEMUCapsIsValid(void *data,
                       qemuCaps->binary);
             return false;
         }
+    }
 
+    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
         kvmSupportsNesting = virQEMUCapsKVMSupportsNesting();
         if (kvmSupportsNesting != qemuCaps->kvmSupportsNesting) {
             VIR_DEBUG("Outdated capabilities for '%s': kvm kernel nested "
@@ -5530,7 +5539,7 @@ virQEMUCapsInitQMP(virQEMUCaps *qemuCaps,
      * for TCG capabilities by asking the same binary again and turning KVM
      * off.
      */
-    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM) &&
+    if (virQEMUCapsHaveAccel(qemuCaps) &&
         virQEMUCapsGet(qemuCaps, QEMU_CAPS_TCG) &&
         virQEMUCapsInitQMPSingle(qemuCaps, libDir, runUid, runGid, true) < 0)
         return -1;
@@ -5594,13 +5603,15 @@ virQEMUCapsNewForBinaryInternal(virArch hostArch,
         virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_KVM);
     virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_QEMU);
 
-    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
+    if (virQEMUCapsHaveAccel(qemuCaps)) {
         qemuCaps->hostCPUSignature = g_strdup(hostCPUSignature);
         qemuCaps->microcodeVersion = microcodeVersion;
         qemuCaps->cpuData = virCPUDataNewCopy(cpuData);
 
         qemuCaps->kernelVersion = g_strdup(kernelVersion);
+    }
 
+    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
         qemuCaps->kvmSupportsNesting = virQEMUCapsKVMSupportsNesting();
 
         qemuCaps->kvmSupportsSecureGuest = virQEMUCapsKVMSupportsSecureGuest();
-- 
2.34.1