[libvirt] [PATCH v2 02/39] virhostdev: Introduce and use virHostdevIsVFIODevice
Michal Privoznik
mprivozn at redhat.com
Thu Sep 26 16:11:58 UTC 2019
In some places we need to check if a hostdev has VFIO backend.
Because of how complicated virDomainHostdevDef structure is, the
check consists of three lines. Move them to a function and
replace all checks with the function call.
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
src/conf/domain_conf.c | 5 +----
src/libvirt_private.syms | 1 +
src/qemu/qemu_cgroup.c | 4 +---
src/qemu/qemu_domain.c | 12 +++---------
src/qemu/qemu_hotplug.c | 8 +-------
src/util/virhostdev.c | 15 +++++++++++++++
src/util/virhostdev.h | 3 +++
7 files changed, 25 insertions(+), 23 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index c290baf953..adf8455579 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -31550,10 +31550,7 @@ virDomainDefHasVFIOHostdev(const virDomainDef *def)
size_t i;
for (i = 0; i < def->nhostdevs; i++) {
- const virDomainHostdevDef *tmp = def->hostdevs[i];
- if (tmp->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
- tmp->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
- tmp->source.subsys.u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO)
+ if (virHostdevIsVFIODevice(def->hostdevs[i]))
return true;
}
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 287e63bffa..ac37aea626 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2104,6 +2104,7 @@ virHostCPUStatsAssign;
virHostdevFindUSBDevice;
virHostdevIsMdevDevice;
virHostdevIsSCSIDevice;
+virHostdevIsVFIODevice;
virHostdevManagerGetDefault;
virHostdevPCINodeDeviceDetach;
virHostdevPCINodeDeviceReAttach;
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index 740a1b33dc..318157dab0 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -413,9 +413,7 @@ qemuTeardownHostdevCgroup(virDomainObjPtr vm,
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_DEVICES))
return 0;
- if (dev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
- dev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
- dev->source.subsys.u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO &&
+ if (virHostdevIsVFIODevice(dev) &&
qemuDomainGetHostdevPath(vm->def, dev, true,
&npaths, &path, NULL) < 0)
goto cleanup;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 2aa2164953..824bca89f4 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -11871,9 +11871,7 @@ getPPC64MemLockLimitBytes(virDomainDefPtr def)
for (i = 0; i < def->nhostdevs; i++) {
virDomainHostdevDefPtr dev = def->hostdevs[i];
- if (dev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
- dev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
- dev->source.subsys.u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO) {
+ if (virHostdevIsVFIODevice(dev)) {
usesVFIO = true;
pciAddr = &dev->source.subsys.u.pci.addr;
@@ -12025,12 +12023,8 @@ qemuDomainGetMemLockLimitBytes(virDomainDefPtr def)
* Note that this may not be valid for all platforms.
*/
for (i = 0; i < def->nhostdevs; i++) {
- virDomainHostdevSubsysPtr subsys = &def->hostdevs[i]->source.subsys;
-
- if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
- (subsys->type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV ||
- (subsys->type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
- subsys->u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO))) {
+ if (virHostdevIsVFIODevice(def->hostdevs[i]) ||
+ virHostdevIsMdevDevice(def->hostdevs[i])) {
memKB = virDomainDefGetMemoryTotal(def) + 1024 * 1024;
goto done;
}
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index e9285f0964..5f92c61aa9 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -4440,16 +4440,10 @@ qemuDomainRemoveHostDevice(virQEMUDriverPtr driver,
qemuDomainObjPrivatePtr priv = vm->privateData;
VIR_AUTOFREE(char *) drivealias = NULL;
VIR_AUTOFREE(char *) objAlias = NULL;
- bool is_vfio = false;
VIR_DEBUG("Removing host device %s from domain %p %s",
hostdev->info->alias, vm, vm->def->name);
- if (hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) {
- int backend = hostdev->source.subsys.u.pci.backend;
- is_vfio = backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO;
- }
-
if (hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI) {
virDomainHostdevSubsysSCSIPtr scsisrc = &hostdev->source.subsys.u.scsi;
virDomainHostdevSubsysSCSIiSCSIPtr iscsisrc = &scsisrc->u.iscsi;
@@ -4497,7 +4491,7 @@ qemuDomainRemoveHostDevice(virQEMUDriverPtr driver,
virDomainAuditHostdev(vm, hostdev, "detach", true);
- if (!is_vfio &&
+ if (!virHostdevIsVFIODevice(hostdev) &&
qemuSecurityRestoreHostdevLabel(driver, vm, hostdev) < 0)
VIR_WARN("Failed to restore host device labelling");
diff --git a/src/util/virhostdev.c b/src/util/virhostdev.c
index 90967b7c7a..85812423b5 100644
--- a/src/util/virhostdev.c
+++ b/src/util/virhostdev.c
@@ -390,6 +390,21 @@ virHostdevIsMdevDevice(const virDomainHostdevDef *hostdev)
}
+/**
+ * virHostdevIsVFIODevice:
+ * @hostdev: host device to check
+ *
+ * Returns true if @hostdev is a PCI device with VFIO backend, false otherwise.
+ */
+bool
+virHostdevIsVFIODevice(const virDomainHostdevDef *hostdev)
+{
+ return hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
+ hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
+ hostdev->source.subsys.u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO;
+}
+
+
static int
virHostdevNetConfigVirtPortProfile(const char *linkdev, int vf,
virNetDevVPortProfilePtr virtPort,
diff --git a/src/util/virhostdev.h b/src/util/virhostdev.h
index 8d7b8c3284..c7ef2055c1 100644
--- a/src/util/virhostdev.h
+++ b/src/util/virhostdev.h
@@ -190,6 +190,9 @@ virHostdevIsSCSIDevice(const virDomainHostdevDef *hostdev)
bool
virHostdevIsMdevDevice(const virDomainHostdevDef *hostdev)
ATTRIBUTE_NONNULL(1);
+bool
+virHostdevIsVFIODevice(const virDomainHostdevDef *hostdev)
+ ATTRIBUTE_NONNULL(1);
/* functions used by NodeDevDetach/Reattach/Reset */
int virHostdevPCINodeDeviceDetach(virHostdevManagerPtr mgr,
--
2.21.0
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