From: Roman Bolshakov <r.bolshakov(a)yadro.com>
virQEMUCapsFormatCache/virQEMUCapsLoadCache adds/reads KVM CPUs to/from
capabilities cache regardless of QEMU_CAPS_KVM. That can cause undesired
side-effects when KVM CPUs are present in the cache on a platform that
doesn't support it, e.g. macOS or Linux without KVM support.
Signed-off-by: Roman Bolshakov <r.bolshakov(a)yadro.com>
Signed-off-by: Andrea Bolognani <abologna(a)redhat.com>
---
src/qemu/qemu_capabilities.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 2d72132410..fd001100a1 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -4420,8 +4420,11 @@ virQEMUCapsLoadCache(virArch hostArch,
return -1;
}
- if (virQEMUCapsLoadAccel(qemuCaps, ctxt, VIR_DOMAIN_VIRT_KVM) < 0 ||
- virQEMUCapsLoadAccel(qemuCaps, ctxt, VIR_DOMAIN_VIRT_QEMU) < 0)
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM) &&
+ virQEMUCapsLoadAccel(qemuCaps, ctxt, VIR_DOMAIN_VIRT_KVM) < 0) {
+ return -1;
+ }
+ if (virQEMUCapsLoadAccel(qemuCaps, ctxt, VIR_DOMAIN_VIRT_QEMU) < 0)
return -1;
if (virQEMUCapsParseGIC(qemuCaps, ctxt) < 0)
@@ -4430,7 +4433,8 @@ virQEMUCapsLoadCache(virArch hostArch,
if (virQEMUCapsParseSEVInfo(qemuCaps, ctxt) < 0)
return -1;
- virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_KVM);
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
+ virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_KVM);
virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_QEMU);
if (virXPathBoolean("boolean(./kvmSupportsNesting)", ctxt) > 0)
@@ -4663,7 +4667,8 @@ virQEMUCapsFormatCache(virQEMUCaps *qemuCaps)
virBufferAsprintf(&buf, "<arch>%s</arch>\n",
virArchToString(qemuCaps->arch));
- virQEMUCapsFormatAccel(qemuCaps, &buf, VIR_DOMAIN_VIRT_KVM);
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
+ virQEMUCapsFormatAccel(qemuCaps, &buf, VIR_DOMAIN_VIRT_KVM);
virQEMUCapsFormatAccel(qemuCaps, &buf, VIR_DOMAIN_VIRT_QEMU);
for (i = 0; i < qemuCaps->ngicCapabilities; i++) {
@@ -5517,7 +5522,8 @@ virQEMUCapsNewForBinaryInternal(virArch hostArch,
qemuCaps->libvirtCtime = virGetSelfLastChanged();
qemuCaps->libvirtVersion = LIBVIR_VERSION_NUMBER;
- virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_KVM);
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM))
+ virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_KVM);
virQEMUCapsInitHostCPUModel(qemuCaps, hostArch, VIR_DOMAIN_VIRT_QEMU);
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) {
--
2.31.1