From: Pavel Hrdina <phrdina@redhat.com>
Date: Sun, 15 Feb 2026 17:19:56 +0000 (+0100)
Subject: conf: Introduce virDomainDefHasPCIHostdevWithIOMMUFD
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4b176cfc3877cca882d63ab4ed446794d7a05722;p=thirdparty%2Flibvirt.git

conf: Introduce virDomainDefHasPCIHostdevWithIOMMUFD

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 98d34f408d..453e301041 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -32663,6 +32663,20 @@ virDomainDefHasPCIHostdev(const virDomainDef *def)
 }
 
 
+bool
+virDomainDefHasPCIHostdevWithIOMMUFD(const virDomainDef *def)
+{
+    size_t i;
+
+    for (i = 0; i < def->nhostdevs; i++) {
+        if (virHostdevIsPCIDeviceWithIOMMUFD(def->hostdevs[i]))
+            return true;
+    }
+
+    return false;
+}
+
+
 bool
 virDomainDefHasMdevHostdev(const virDomainDef *def)
 {
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index f98fed650a..a13f6d79e9 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -4662,6 +4662,9 @@ virDomainDefHasNVMeDisk(const virDomainDef *def);
 bool
 virDomainDefHasPCIHostdev(const virDomainDef *def);
 
+bool
+virDomainDefHasPCIHostdevWithIOMMUFD(const virDomainDef *def);
+
 bool
 virDomainDefHasMdevHostdev(const virDomainDef *def);
 
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 15a56a262a..d8ae4f46cd 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -348,6 +348,7 @@ virDomainDefHasNVMeDisk;
 virDomainDefHasOldStyleROUEFI;
 virDomainDefHasOldStyleUEFI;
 virDomainDefHasPCIHostdev;
+virDomainDefHasPCIHostdevWithIOMMUFD;
 virDomainDefHasTimer;
 virDomainDefHasUSB;
 virDomainDefHasVcpusOffline;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index c09c883a28..f400835332 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -5356,43 +5356,25 @@ qemuBuildIOMMUFDCommandLine(virCommand *cmd,
                             const virDomainDef *def,
                             virDomainObj *vm)
 {
-    size_t i;
     qemuDomainObjPrivate *priv = vm->privateData;
     g_autofree char *fdstr = g_strdup_printf("%d", priv->iommufd);
+    g_autoptr(virJSONValue) props = NULL;
 
+    if (!virDomainDefHasPCIHostdevWithIOMMUFD(def))
+        return 0;
 
-    for (i = 0; i < def->nhostdevs; i++) {
-        virDomainHostdevDef *hostdev = def->hostdevs[i];
-        virDomainHostdevSubsys *subsys = &hostdev->source.subsys;
-        g_autoptr(virJSONValue) props = NULL;
-
-        if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
-            continue;
-
-        if (subsys->type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
-            continue;
-
-        if (hostdev->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_UNASSIGNED)
-            continue;
-
-        if (subsys->u.pci.driver.iommufd != VIR_TRISTATE_BOOL_YES)
-            continue;
-
-        virCommandPassFD(cmd, priv->iommufd, VIR_COMMAND_PASS_FD_CLOSE_PARENT);
+    virCommandPassFD(cmd, priv->iommufd, VIR_COMMAND_PASS_FD_CLOSE_PARENT);
 
-        priv->iommufd = -1;
+    priv->iommufd = -1;
 
-        if (qemuMonitorCreateObjectProps(&props, "iommufd",
-                                         "iommufd0",
-                                         "S:fd", fdstr,
-                                         NULL) < 0)
-            return -1;
-
-        if (qemuBuildObjectCommandlineFromJSON(cmd, props) < 0)
-            return -1;
+    if (qemuMonitorCreateObjectProps(&props, "iommufd",
+                                     "iommufd0",
+                                     "S:fd", fdstr,
+                                     NULL) < 0)
+        return -1;
 
-        break;
-    }
+    if (qemuBuildObjectCommandlineFromJSON(cmd, props) < 0)
+        return -1;
 
     return 0;
 }