151 lines
5.1 KiB
Diff
151 lines
5.1 KiB
Diff
From 9033b938d402c3eb2cbc13b3dc2a87b191b03aed Mon Sep 17 00:00:00 2001
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From: AlexChen <alex.chen@huawei.com>
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Date: Sat, 25 Nov 2023 09:51:46 +0800
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Subject: [PATCH] vdpa: support vdpa device hot plug/unplug
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support vdpa device hot plug/unplug
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Signed-off-by: jiangdongxu <jiangdongxu1@huawei.com>
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Signed-off-by: AlexChen <alex.chen@huawei.com>
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---
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src/qemu/qemu_hotplug.c | 95 +++++++++++++++++++++++++++++++++++++++++
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1 file changed, 95 insertions(+)
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diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
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index e13879cde3..3c5540291b 100644
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--- a/src/qemu/qemu_hotplug.c
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+++ b/src/qemu/qemu_hotplug.c
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@@ -2907,6 +2907,89 @@ qemuDomainAttachMediatedDevice(virQEMUDriverPtr driver,
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}
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+static int
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+qemuDomainAttachVDPADevice(virQEMUDriverPtr driver,
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+ virDomainObjPtr vm,
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+ virDomainHostdevDefPtr hostdev)
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+{
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+ int ret = -1;
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+ g_autofree char *devstr = NULL;
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+ bool teardowncgroup = false;
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+ bool teardownlabel = false;
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+ bool teardowndevice = false;
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+ bool teardownmemlock = false;
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+ bool releaseaddr = false;
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+ qemuDomainObjPrivatePtr priv = vm->privateData;
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+ virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_HOSTDEV,
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+ { .hostdev = hostdev } };
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+
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+ if (qemuDomainNamespaceSetupHostdev(vm, hostdev) < 0)
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+ goto error;
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+ teardowndevice = true;
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+
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+ if (qemuSetupHostdevCgroup(vm, hostdev) < 0)
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+ goto error;
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+ teardowncgroup = true;
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+
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+ if (qemuSecuritySetHostdevLabel(driver, vm, hostdev) < 0)
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+ goto error;
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+ teardownlabel = true;
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+
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+ if (qemuDomainEnsurePCIAddress(vm, &dev, driver) < 0)
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+ goto error;
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+ releaseaddr = true;
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+
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+ if (qemuAssignDeviceHostdevAlias(vm->def, &hostdev->info->alias, -1) < 0)
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+ goto error;
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+
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+ if (!virDomainObjIsActive(vm)) {
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+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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+ _("guest unexpectedly quit during hotplug"));
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+ goto error;
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+ }
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+
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+ if (!(devstr = qemuBuildHostdevVDPAStr(vm->def, hostdev, priv->qemuCaps)))
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+ goto error;
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+
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+ if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs + 1) < 0)
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+ goto error;
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+
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+ if (qemuDomainAdjustMaxMemLockHostdev(vm, hostdev) < 0)
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+ goto error;
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+ teardownmemlock = true;
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+
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+ qemuDomainObjEnterMonitor(driver, vm);
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+ ret = qemuMonitorAddDevice(priv->mon, devstr);
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+ if (qemuDomainObjExitMonitor(driver, vm) < 0) {
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+ goto error;
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+ }
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+
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+ virDomainAuditHostdev(vm, hostdev, "attach", ret == 0);
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+ if (ret < 0)
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+ goto error;
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+
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+ vm->def->hostdevs[vm->def->nhostdevs++] = hostdev;
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+
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+ return 0;
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+
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+ error:
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+ if (teardowncgroup && qemuTeardownHostdevCgroup(vm, hostdev) < 0)
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+ VIR_WARN("Unable to remove host device cgroup ACL on hotplug fail");
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+ if (teardownlabel &&
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+ qemuSecurityRestoreHostdevLabel(driver, vm, hostdev) < 0)
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+ VIR_WARN("Unable to restore host device labelling on hotplug fail");
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+ if (teardowndevice &&
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+ qemuDomainNamespaceTeardownHostdev(vm, hostdev) < 0)
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+ VIR_WARN("Unable to remove host device from /dev");
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+ if (teardownmemlock && qemuDomainAdjustMaxMemLock(vm, false) < 0)
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+ VIR_WARN("Unable to reset maximum locked memory on hotplug fail");
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+ if (releaseaddr)
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+ qemuDomainReleaseDeviceAddress(vm, hostdev->info);
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+
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+ return -1;
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+}
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+
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+
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int
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qemuDomainAttachHostDevice(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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@@ -2947,6 +3030,11 @@ qemuDomainAttachHostDevice(virQEMUDriverPtr driver,
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return -1;
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break;
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+ case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_VDPA:
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+ if (qemuDomainAttachVDPADevice(driver, vm, hostdev) < 0)
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+ return -1;
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+ break;
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+
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default:
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
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_("hotplug is not supported for hostdev subsys type '%s'"),
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@@ -4564,6 +4652,7 @@ qemuDomainRemoveHostDevice(virQEMUDriverPtr driver,
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case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV:
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qemuDomainRemoveMediatedDevice(driver, vm, hostdev);
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break;
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+ case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_VDPA:
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case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_LAST:
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break;
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}
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@@ -5397,6 +5486,7 @@ qemuDomainDetachPrepHostdev(virDomainObjPtr vm,
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virDomainHostdevSubsysPCIPtr pcisrc = &subsys->u.pci;
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virDomainHostdevSubsysSCSIPtr scsisrc = &subsys->u.scsi;
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virDomainHostdevSubsysMediatedDevPtr mdevsrc = &subsys->u.mdev;
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+ virDomainHostdevSubsysVDPAPtr vdpasrc = &subsys->u.vdpa;
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virDomainHostdevDefPtr hostdev = NULL;
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int idx;
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@@ -5454,6 +5544,11 @@ qemuDomainDetachPrepHostdev(virDomainObjPtr vm,
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break;
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case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST:
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break;
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+ case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_VDPA:
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+ virReportError(VIR_ERR_DEVICE_MISSING,
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+ _("vdpa device '%s' not found"),
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+ vdpasrc->devpath);
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+ break;
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default:
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("unexpected hostdev type %d"), subsys->type);
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--
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2.27.0
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