On 8/5/20 7:22 AM, Thomas Huth wrote:
libvirt currently silently allows <timer name="kvmclock"/> and some
other timer tags in the guest XML definition for timers that do not
exist on non-x86 systems. We should not silently ignore these tags
since the users might not get what they expected otherwise.
Note: The error is only generated if the timer is marked with
present="yes" - otherwise we would suddenly refuse XML definitions
that worked without problems before.
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1754887
Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx>
---
Reviewed-by: Daniel Henrique Barboza <danielhb413@xxxxxxxxx>
v2: Check also for timer->present == 1
src/qemu/qemu_validate.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 488f258d00..561e7b12c7 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -371,6 +371,18 @@ qemuValidateDomainDefClockTimers(const virDomainDef *def,
case VIR_DOMAIN_TIMER_NAME_TSC:
case VIR_DOMAIN_TIMER_NAME_KVMCLOCK:
case VIR_DOMAIN_TIMER_NAME_HYPERVCLOCK:
+ if (!ARCH_IS_X86(def->os.arch) && timer->present == 1) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Configuring the '%s' timer is not supported "
+ "for virtType=%s arch=%s machine=%s guests"),
+ virDomainTimerNameTypeToString(timer->name),
+ virDomainVirtTypeToString(def->virtType),
+ virArchToString(def->os.arch),
+ def->os.machine);
+ return -1;
+ }
+ break;
+
case VIR_DOMAIN_TIMER_NAME_LAST:
break;
