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qemu: Limit refresh of CPU halted state to s390

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Refreshing the halted state can cause VM performance issues. Since
s390 is currently the only architecture with a known interest in
the halted state, we're avoiding to call QEMU on other platforms.

Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
This commit is contained in:
Viktor Mihajlovski 2018-02-06 11:18:56 +01:00 committed by Peter Krempa
parent ca588a34b2
commit 818a29e0c7
1 changed files with 5 additions and 0 deletions
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5
src/qemu/qemu_domain.c
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@ -8726,6 +8726,11 @@ qemuDomainRefreshVcpuHalted(virQEMUDriverPtr driver,
if (vm->def->virtType == VIR_DOMAIN_VIRT_QEMU)
return 0;
/* The halted state is interresting only on s390(x). On other platforms
* the data would be stale at the time when it would be used. */
if (!ARCH_IS_S390(vm->def->os.arch))
return 0;
if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
return -1;