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qemu: Implement virDomainSetGuestVcpus
Allow modification of specific vCPU states via the guest agent.
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parent
a24edc48c3
commit
66acbe603b
@ -19839,6 +19839,88 @@ qemuDomainGetGuestVcpus(virDomainPtr dom,
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}
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}
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static int
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qemuDomainSetGuestVcpus(virDomainPtr dom,
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const char *cpumap,
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int state,
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unsigned int flags)
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{
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virQEMUDriverPtr driver = dom->conn->privateData;
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virDomainObjPtr vm = NULL;
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virBitmapPtr map = NULL;
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qemuAgentCPUInfoPtr info = NULL;
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int ninfo = 0;
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size_t i;
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int ret = -1;
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virCheckFlags(0, -1);
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if (state != 0 && state != 1) {
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virReportInvalidArg(state, "%s", _("unsupported state value"));
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return -1;
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}
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if (virBitmapParse(cpumap, &map, QEMU_GUEST_VCPU_MAX_ID) < 0)
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goto cleanup;
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if (!(vm = qemuDomObjFromDomain(dom)))
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goto cleanup;
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if (virDomainSetGuestVcpusEnsureACL(dom->conn, vm->def) < 0)
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goto cleanup;
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if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
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goto cleanup;
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if (!qemuDomainAgentAvailable(vm, true))
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goto endjob;
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qemuDomainObjEnterAgent(vm);
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ninfo = qemuAgentGetVCPUs(qemuDomainGetAgent(vm), &info);
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qemuDomainObjExitAgent(vm);
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if (ninfo < 0)
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goto endjob;
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for (i = 0; i < ninfo; i++) {
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if (!virBitmapIsBitSet(map, info[i].id))
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continue;
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if (!state && !info[i].offlinable) {
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virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
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_("vCPU '%u' is not offlinable"), info[i].id);
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goto endjob;
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}
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info[i].online = !!state;
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info[i].modified = true;
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ignore_value(virBitmapClearBit(map, info[i].id));
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}
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if (!virBitmapIsAllClear(map)) {
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char *tmp = virBitmapFormat(map);
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virReportError(VIR_ERR_INVALID_ARG,
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_("guest is missing vCPUs '%s'"), NULLSTR(tmp));
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VIR_FREE(tmp);
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goto endjob;
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}
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qemuDomainObjEnterAgent(vm);
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ret = qemuAgentSetVCPUs(qemuDomainGetAgent(vm), info, ninfo);
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qemuDomainObjExitAgent(vm);
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endjob:
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qemuDomainObjEndJob(driver, vm);
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cleanup:
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VIR_FREE(info);
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virBitmapFree(map);
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virDomainObjEndAPI(&vm);
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return ret;
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}
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static virHypervisorDriver qemuHypervisorDriver = {
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static virHypervisorDriver qemuHypervisorDriver = {
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.name = QEMU_DRIVER_NAME,
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.name = QEMU_DRIVER_NAME,
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.connectOpen = qemuConnectOpen, /* 0.2.0 */
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.connectOpen = qemuConnectOpen, /* 0.2.0 */
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@ -20051,6 +20133,7 @@ static virHypervisorDriver qemuHypervisorDriver = {
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.domainRename = qemuDomainRename, /* 1.2.19 */
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.domainRename = qemuDomainRename, /* 1.2.19 */
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.domainMigrateStartPostCopy = qemuDomainMigrateStartPostCopy, /* 1.3.3 */
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.domainMigrateStartPostCopy = qemuDomainMigrateStartPostCopy, /* 1.3.3 */
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.domainGetGuestVcpus = qemuDomainGetGuestVcpus, /* 2.0.0 */
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.domainGetGuestVcpus = qemuDomainGetGuestVcpus, /* 2.0.0 */
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.domainSetGuestVcpus = qemuDomainSetGuestVcpus, /* 2.0.0 */
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};
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};
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