[libvirt] [PATCH] qemu: Limit refresh of CPU halted state to s390

[Viktor Mihajlovski]

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 at linux.vnet.ibm.com>
---
 src/qemu/qemu_domain.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index df433c2..d2c833f 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -8634,6 +8634,10 @@ qemuDomainRefreshVcpuHalted(virQEMUDriverPtr driver,
     if (vm->def->virtType == VIR_DOMAIN_VIRT_QEMU)
         return 0;
 
+    /* Only supported on s390(x) */
+    if (!ARCH_IS_S390(vm->def->os.arch))
+        return 0;
+
     if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
         return -1;
 
-- 
1.9.1