3:29 a.m.
Format the caching-mode option for the intel-iommu device,
based on its <driver caching> attribute value.
https://bugzilla.redhat.com/show_bug.cgi?id=1427005
---
src/qemu/qemu_capabilities.c | 3 +++
src/qemu/qemu_capabilities.h | 3 +++
src/qemu/qemu_command.c | 11 ++++++++++
tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 +
.../qemuxml2argv-intel-iommu-caching.args | 25 ++++++++++++++++++++++
tests/qemuxml2argvtest.c | 11 ++++++++++
6 files changed, 54 insertions(+)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-caching.args
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 0c7d7b1..0e9afd2 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -366,6 +366,8 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
"query-named-block-nodes",
"kernel-irqchip",
"intel-iommu-intremap",
+
+ "intel-iommu-caching", /* 255 */
);
@@ -1718,6 +1720,7 @@ static struct virQEMUCapsStringFlags
virQEMUCapsObjectPropsUSBNECXHCI[] = {
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsIntelIOMMU[] = {
{ "intremap", QEMU_CAPS_INTEL_IOMMU_INTREMAP },
+ { "caching-mode", QEMU_CAPS_INTEL_IOMMU_CACHING },
};
/* see documentation for virQEMUCapsQMPSchemaGetByPath for the query format */
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 4d19691..a3ff7e6 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -404,6 +404,9 @@ typedef enum {
QEMU_CAPS_MACHINE_KERNEL_IRQCHIP, /* -machine kernel_irqchip */
QEMU_CAPS_INTEL_IOMMU_INTREMAP, /* intel-iommu.intremap */
+ /* 255 */
+ QEMU_CAPS_INTEL_IOMMU_CACHING, /* intel-iommu.caching-mode */
+
QEMU_CAPS_LAST /* this must always be the last item */
} virQEMUCapsFlags;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 07c4aeb..566bd87 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -6690,6 +6690,13 @@ qemuBuildIOMMUCommandLine(virCommandPtr cmd,
"with this QEMU binary"));
return -1;
}
+ if (iommu->caching != VIR_TRISTATE_SWITCH_ABSENT &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_INTEL_IOMMU_CACHING)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("iommu: caching mode is not supported "
+ "with this QEMU binary"));
+ return -1;
+ }
break;
case VIR_DOMAIN_IOMMU_MODEL_LAST:
break;
@@ -6719,6 +6726,10 @@ qemuBuildIOMMUCommandLine(virCommandPtr cmd,
virBufferAsprintf(&opts, ",intremap=%s",
virTristateSwitchTypeToString(iommu->intremap));
}
+ if (iommu->caching != VIR_TRISTATE_SWITCH_ABSENT) {
+ virBufferAsprintf(&opts, ",caching-mode=%s",
+ virTristateSwitchTypeToString(iommu->caching));
+ }
case VIR_DOMAIN_IOMMU_MODEL_LAST:
break;
}
diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
index 799c52a..0193492 100644
--- a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
@@ -209,6 +209,7 @@
<flag name='query-named-block-nodes'/>
<flag name='kernel-irqchip'/>
<flag name='intel-iommu-intremap'/>
+ <flag name='intel-iommu-caching'/>
<version>2008090</version>
<kvmVersion>0</kvmVersion>
<package> (v2.9.0-rc0-142-g940a8ce)</package>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-caching.args
b/tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-caching.args
new file mode 100644
index 0000000..1bec6d0
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-caching.args
@@ -0,0 +1,25 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name QEMUGuest1 \
+-S \
+-machine q35,accel=tcg \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-device intel-iommu,intremap=on,caching-mode=on \
+-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
+-device ioh3420,port=0x10,chassis=3,id=pci.3,bus=pcie.0,addr=0x2 \
+-device ich9-usb-ehci1,id=usb,bus=pci.2,addr=0x2.0x7 \
+-device rtl8139,vlan=0,id=net0,mac=52:54:00:ab:0c:5c,bus=pci.2,addr=0x1 \
+-net user,vlan=0,name=hostnet0
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 29cd8b5..aab20c4 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2497,6 +2497,17 @@ mymain(void)
QEMU_CAPS_MACHINE_KERNEL_IRQCHIP,
QEMU_CAPS_INTEL_IOMMU_INTREMAP,
QEMU_CAPS_DEVICE_INTEL_IOMMU);
+ DO_TEST("intel-iommu-caching",
+ QEMU_CAPS_MACHINE_OPT,
+ QEMU_CAPS_DEVICE_PCI_BRIDGE,
+ QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE,
+ QEMU_CAPS_DEVICE_IOH3420,
+ QEMU_CAPS_ICH9_AHCI,
+ QEMU_CAPS_PCI_MULTIFUNCTION,
+ QEMU_CAPS_ICH9_USB_EHCI1,
+ QEMU_CAPS_DEVICE_INTEL_IOMMU,
+ QEMU_CAPS_INTEL_IOMMU_INTREMAP,
+ QEMU_CAPS_INTEL_IOMMU_CACHING);
DO_TEST("cpu-hotplug-startup", QEMU_CAPS_QUERY_HOTPLUGGABLE_CPUS);
--
2.10.2