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qemu: process: Fix start with unpluggable vcpus with NUMA pinning

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Similarly to vcpu hotplug the emulator thread cgroup numa mapping needs
to be relaxed while hot-adding vcpus so that the threads can allocate
data in the DMA zone.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1370084
This commit is contained in:
Peter Krempa 2016-09-07 13:20:00 +02:00
parent eb5dee3534
commit 68115fe0ab
1 changed files with 6 additions and 0 deletions
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6
src/qemu/qemu_process.c
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@ -4864,6 +4864,8 @@ qemuProcessSetupHotpluggableVcpus(virQEMUDriverPtr driver,
qemuDomainAsyncJob asyncJob) qemuDomainAsyncJob asyncJob)
{ {
unsigned int maxvcpus = virDomainDefGetVcpusMax(vm->def); unsigned int maxvcpus = virDomainDefGetVcpusMax(vm->def);
qemuDomainObjPrivatePtr priv = vm->privateData;
qemuCgroupEmulatorAllNodesDataPtr emulatorCgroup = NULL;
virDomainVcpuDefPtr vcpu; virDomainVcpuDefPtr vcpu;
qemuDomainVcpuPrivatePtr vcpupriv; qemuDomainVcpuPrivatePtr vcpupriv;
virJSONValuePtr vcpuprops = NULL; virJSONValuePtr vcpuprops = NULL;
@ -4896,6 +4898,9 @@ qemuProcessSetupHotpluggableVcpus(virQEMUDriverPtr driver,
qsort(bootHotplug, nbootHotplug, sizeof(*bootHotplug), qsort(bootHotplug, nbootHotplug, sizeof(*bootHotplug),
qemuProcessVcpusSortOrder); qemuProcessVcpusSortOrder);
if (qemuCgroupEmulatorAllNodesAllow(priv->cgroup, &emulatorCgroup) < 0)
goto cleanup;
for (i = 0; i < nbootHotplug; i++) { for (i = 0; i < nbootHotplug; i++) {
vcpu = bootHotplug[i]; vcpu = bootHotplug[i];
@ -4920,6 +4925,7 @@ qemuProcessSetupHotpluggableVcpus(virQEMUDriverPtr driver,
ret = 0; ret = 0;
cleanup: cleanup:
qemuCgrouEmulatorAllNodesRestore(emulatorCgroup);
VIR_FREE(bootHotplug); VIR_FREE(bootHotplug);
virJSONValueFree(vcpuprops); virJSONValueFree(vcpuprops);
return ret; return ret;