[PATCH rfcv4 09/13] qemu: add FakeReboot support for TDX guest

Utilize the existing fake reboot mechanism to do reboot for TDX guest. Different from normal guest, TDX guest doesn't support system_reset, so have to kill the old guest and start a new one to simulate the reboot. Co-developed-by: Chenyi Qiang <chenyi.qiang(a)intel.com&gt; Signed-off-by: Zhenzhong Duan <zhenzhong.duan(a)intel.com&gt; --- src/qemu/qemu_process.c | 74 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index bd8624e3f6..35758d882f 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -441,6 +441,75 @@ qemuProcessHandleReset(qemuMonitor *mon G_GNUC_UNUSED, } +static void +qemuProcessSecFakeReboot(void *opaque) +{ + virDomainObj *vm = opaque; + qemuDomainObjPrivate *priv = vm->privateData; + virQEMUDriver *driver = priv->driver; + unsigned int stopFlags = 0; + virObjectEvent *event = NULL; + virObjectEvent * event2 = NULL; + + VIR_DEBUG("Handle secure guest reboot: destroy phase"); + + virObjectLock(vm); + if (qemuProcessBeginStopJob(vm, VIR_JOB_DESTROY, 0) < 0) + goto cleanup; + + if (virDomainObjCheckActive(vm) < 0) { + virDomainObjEndJob(vm); + goto cleanup; + } + + if (vm->job->asyncJob == VIR_ASYNC_JOB_MIGRATION_IN) + stopFlags |= VIR_QEMU_PROCESS_STOP_MIGRATED; + + qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_DESTROYED, + VIR_ASYNC_JOB_NONE, stopFlags); + virDomainAuditStop(vm, "destroyed"); + + event = virDomainEventLifecycleNewFromObj(vm, + VIR_DOMAIN_EVENT_STOPPED, + VIR_DOMAIN_EVENT_STOPPED_DESTROYED); + + virObjectEventStateQueue(driver->domainEventState, event); + /* skip remove inactive domain from active list */ + virDomainObjEndJob(vm); + + VIR_DEBUG("Handle secure guest reboot: boot phase"); + + if (qemuProcessBeginJob(vm, VIR_DOMAIN_JOB_OPERATION_START, 0) < 0) { + qemuDomainRemoveInactive(driver, vm, 0, false); + goto cleanup; + } + + if (qemuProcessStart(NULL, driver, vm, NULL, VIR_ASYNC_JOB_START, + NULL, -1, NULL, NULL, + VIR_NETDEV_VPORT_PROFILE_OP_CREATE, + 0) < 0) { + virDomainAuditStart(vm, "booted", false); + qemuDomainRemoveInactive(driver, vm, 0, false); + goto endjob; + } + + virDomainAuditStart(vm, "booted", true); + event2 = virDomainEventLifecycleNewFromObj(vm, + VIR_DOMAIN_EVENT_STARTED, + VIR_DOMAIN_EVENT_STARTED_BOOTED); + virObjectEventStateQueue(driver->domainEventState, event2); + + qemuDomainSaveStatus(vm); + + endjob: + qemuProcessEndJob(vm); + + cleanup: + qemuDomainSetFakeReboot(vm, false); + virDomainObjEndAPI(&vm); +} + + /* * Since we have the '-no-shutdown' flag set, the * QEMU process will currently have guest OS shutdown @@ -459,6 +528,11 @@ qemuProcessFakeReboot(void *opaque) int ret = -1, rc; VIR_DEBUG("vm=%p", vm); + + if (vm->def->sec && + vm->def->sec->sectype == VIR_DOMAIN_LAUNCH_SECURITY_TDX) + return qemuProcessSecFakeReboot(opaque); + virObjectLock(vm); if (virDomainObjBeginJob(vm, VIR_JOB_MODIFY) < 0) goto cleanup; -- 2.34.1