more descriptive as: qemu: fix vcpu pinning when not all vcpus are enabled On Tue, Feb 26, 2019 at 10:01:28AM +0800, Yi Wang wrote:
vcpupin will fail when maxvcpus is larger than current
vcpu:
virsh vcpupin win7 --vcpu 0 --cpulist 5-6
error: Requested operation is not valid: cpu affinity is not supported
win7 xml in the command above is like below:
...
<vcpu current="3" placement="static">8</vcpu>
...
The reason is vcpu[3] and vcpu[4] have zero tids and should not been
compared as valid situation in qemuDomainRefreshVcpuInfo().
This issue is introduced by commit 34f7743, which fix recording of vCPU
pids for MTTCG.
Signed-off-by: Yi Wang <wang.yi59@xxxxxxxxxx>
---
v2: stop considering zero TIDs as duplicate. Thanks to Jano.
---
src/qemu/qemu_domain.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index ac01e86..c70d3f3 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -10708,7 +10708,7 @@ qemuDomainRefreshVcpuInfo(virQEMUDriverPtr driver,
}
for (j = 0; j < i; j++) {
- if (info[i].tid == info[j].tid) {
+ if (0 != info[i].tid && info[i].tid == info[j].tid) {
The prevalent style is with the '0' on the right side. I'll fix that when pushing.
VIR_DEBUG("vCPU[%zu] PID %llu duplicates vCPU[%zu]",
i, (unsigned long long)info[i].tid, j);
validTIDs = false;
Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx> Jano
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