Re: [libvirt] [PATCHv3 1/6] conf: add <irqchip mode> to <features>

Add a new <irqchip> element with a mode attribute. Possible values are off, split or on. https://bugzilla.redhat.com/show_bug.cgi?id=1427005 --- docs/formatdomain.html.in | 10 +++++++ docs/schemas/domaincommon.rng | 16 ++++++++++ src/conf/domain_conf.c | 34 +++++++++++++++++++++- src/conf/domain_conf.h | 12 ++++++++ .../qemuxml2argv-intel-iommu-irqchip.xml | 29 ++++++++++++++++++ .../qemuxml2xmlout-intel-iommu-irqchip.xml | 1 + tests/qemuxml2xmltest.c | 1 + 7 files changed, 102 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-irqchip.xml create mode 120000 tests/qemuxml2xmloutdata/qemuxml2xmlout-intel-iommu-irqchip.xml diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index e31a271..4b92a0f 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -1643,6 +1643,7 @@ &lt;/kvm&gt; &lt;pvspinlock state='on'/&gt; &lt;gic version='2'/&gt; + &lt;irqchip mode='split'/&gt; &lt;/features&gt; ...</pre> @@ -1804,6 +1805,15 @@ for hypervisor to decide. <span class="since">Since 2.1.0</span> </dd> + <dt><code>irqchip</code></dt> + <dd>Tune the in-kernel irqchip. Possible values for the + <code>mode</code> attribute are: + <code>on</code>, <code>split</code> and <code>off</code>. + <code>split</code> is useful for using interrupt remapping + with the <a href="#elementsIommu">IOMMU device</a>. + The default is left for hypervisor to decide. + <span class="since">Since 3.3.0</span> (QEMU only) + </dd> </dl>

<h3><a name="elementsTime">Time keeping</a></h3> diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index eb4b0f7..7772a91 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -4514,6 +4514,9 @@ </optional> </element> </optional> + <optional> + <ref name="irqchip"/> + </optional> </interleave> </element> </optional> @@ -4689,6 +4692,19 @@ </element> </define> + <define name="irqchip"> + <element name="irqchip"> + <attribute name="mode"> + <choice> + <value>off</value> + <value>split</value> + <value>on</value> + </choice> + </attribute> + <empty/> + </element> + </define> + <define name="address"> <element name="address"> <choice> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index fe9b7c7..73fa268 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -140,7 +140,8 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST, "pmu", "vmport", "gic", - "smm") + "smm", + "irqchip") VIR_ENUM_IMPL(virDomainCapabilitiesPolicy, VIR_DOMAIN_CAPABILITIES_POLICY_LAST, "default", @@ -857,6 +858,12 @@ VIR_ENUM_IMPL(virDomainLoader, "rom", "pflash") +VIR_ENUM_IMPL(virDomainIRQChip, + VIR_DOMAIN_IRQCHIP_LAST, + "off", + "split", + "on") + /* Internal mapping: subset of block job types that can be present in * <mirror> XML (remaining types are not two-phase). */ VIR_ENUM_DECL(virDomainBlockJob) @@ -17521,6 +17528,24 @@ virDomainDefParseXML(xmlDocPtr xml, ctxt->node = node; break; + case VIR_DOMAIN_FEATURE_IRQCHIP: + node = ctxt->node; + ctxt->node = nodes[i]; + tmp = virXPathString("string(./@mode)", ctxt); + if (tmp) { + int value = virDomainIRQChipTypeFromString(tmp); + if (value < 0) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Unknown irqchip mode: %s"), + tmp); + goto error; + } + def->irqchip = value; + def->features[val] = VIR_TRISTATE_SWITCH_ON; + } + ctxt->node = node; + break; + /* coverity[dead_error_begin] */ case VIR_DOMAIN_FEATURE_LAST: break; @@ -24601,6 +24626,13 @@ virDomainDefFormatInternal(virDomainDefPtr def, } break; + case VIR_DOMAIN_FEATURE_IRQCHIP: + if (def->features[i] == VIR_TRISTATE_SWITCH_ON) { + virBufferAsprintf(buf, "<irqchip mode='%s'/>\n", + virDomainIRQChipTypeToString(def->irqchip)); + } + break; + /* coverity[dead_error_begin] */ case VIR_DOMAIN_FEATURE_LAST: break; diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 3b6b174..61af012 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -1673,6 +1673,7 @@ typedef enum { VIR_DOMAIN_FEATURE_VMPORT, VIR_DOMAIN_FEATURE_GIC, VIR_DOMAIN_FEATURE_SMM, + VIR_DOMAIN_FEATURE_IRQCHIP, VIR_DOMAIN_FEATURE_LAST } virDomainFeature; @@ -1812,6 +1813,16 @@ struct _virDomainLoaderDef { void virDomainLoaderDefFree(virDomainLoaderDefPtr loader); +typedef enum { + VIR_DOMAIN_IRQCHIP_OFF = 0, + VIR_DOMAIN_IRQCHIP_SPLIT, + VIR_DOMAIN_IRQCHIP_ON, + + VIR_DOMAIN_IRQCHIP_LAST +} virDomainIRQChip; + +VIR_ENUM_DECL(virDomainIRQChip); + /* Operating system configuration data & machine / arch */ typedef struct _virDomainOSDef virDomainOSDef; typedef virDomainOSDef *virDomainOSDefPtr; @@ -2261,6 +2272,7 @@ struct _virDomainDef { unsigned int hyperv_spinlocks; virGICVersion gic_version; char *hyperv_vendor_id; + virDomainIRQChip irqchip; /* These options are of type virTristateSwitch: ON = keep, OFF = drop */ int caps_features[VIR_DOMAIN_CAPS_FEATURE_LAST]; diff --git a/tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-irqchip.xml b/tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-irqchip.xml new file mode 100644 index 0000000..cc895af --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-irqchip.xml @@ -0,0 +1,29 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219100</memory> + <currentMemory unit='KiB'>219100</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='x86_64' machine='q35'>hvm</type> + <boot dev='hd'/> + </os> + <features> + <irqchip mode='split'/> + </features> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu-system-x86_64</emulator> + <controller type='pci' index='0' model='pcie-root'/> + <controller type='sata' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/> + </controller> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <memballoon model='none'/> + <iommu model='intel'/> + </devices> +</domain> diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-intel-iommu-irqchip.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-intel-iommu-irqchip.xml new file mode 120000 index 0000000..58a0199 --- /dev/null +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-intel-iommu-irqchip.xml @@ -0,0 +1 @@ +../qemuxml2argvdata/qemuxml2argv-intel-iommu-irqchip.xml \ No newline at end of file diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index 2dccde7..40425f5 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -1122,6 +1122,7 @@ mymain(void) DO_TEST("intel-iommu-machine", QEMU_CAPS_MACHINE_OPT, QEMU_CAPS_MACHINE_IOMMU); + DO_TEST("intel-iommu-irqchip", NONE); DO_TEST("cpu-check-none", NONE); DO_TEST("cpu-check-partial", NONE);