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libvirt/SOURCES/libvirt-qemu-add-IOMMU-model-amd.patch

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From 62862c4c7302758d304dd876f26712a75df26e08 Mon Sep 17 00:00:00 2001
Message-ID: <62862c4c7302758d304dd876f26712a75df26e08.1752749355.git.jdenemar@redhat.com>
From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
Date: Fri, 14 Mar 2025 17:13:09 +0100
Subject: [PATCH] qemu: add IOMMU model amd
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Introduce a new IOMMU device model 'amd', both the parser
and the formatter for QEMU because of our enum warnings.
https://issues.redhat.com/browse/RHEL-50560
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
(cherry picked from commit 14760600914ea6b5da778dd470823e734becf630)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
---
docs/formatdomain.rst | 5 ++-
src/conf/domain_conf.c | 1 +
src/conf/domain_conf.h | 1 +
src/conf/domain_validate.c | 13 +++++++
src/conf/schemas/domaincommon.rng | 1 +
src/qemu/qemu_command.c | 28 +++++++++++++
src/qemu/qemu_domain_address.c | 4 ++
src/qemu/qemu_validate.c | 22 +++++++++++
.../amd-iommu.x86_64-latest.args | 35 +++++++++++++++++
.../amd-iommu.x86_64-latest.xml | 1 +
tests/qemuxmlconfdata/amd-iommu.xml | 39 +++++++++++++++++++
tests/qemuxmlconftest.c | 2 +
12 files changed, 150 insertions(+), 2 deletions(-)
create mode 100644 tests/qemuxmlconfdata/amd-iommu.x86_64-latest.args
create mode 120000 tests/qemuxmlconfdata/amd-iommu.x86_64-latest.xml
create mode 100644 tests/qemuxmlconfdata/amd-iommu.xml
diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index a950ee1cb4..ec7bdb07d0 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -8841,8 +8841,9 @@ Example:
``model``
Supported values are ``intel`` (for Q35 guests) ``smmuv3``
- (:since:`since 5.5.0`, for ARM virt guests), and ``virtio``
- (:since:`since 8.3.0`, for Q35 and ARM virt guests).
+ (:since:`since 5.5.0`, for ARM virt guests), ``virtio``
+ (:since:`since 8.3.0`, for Q35 and ARM virt guests) and
+ ``amd`` (:since:`since 11.5.0`).
``driver``
The ``driver`` subelement can be used to configure additional options, some
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 726c3095ed..7c8591e509 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1349,6 +1349,7 @@ VIR_ENUM_IMPL(virDomainIOMMUModel,
"intel",
"smmuv3",
"virtio",
+ "amd",
);
VIR_ENUM_IMPL(virDomainVsockModel,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 20be6f7c05..343bb9bae0 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2973,6 +2973,7 @@ typedef enum {
VIR_DOMAIN_IOMMU_MODEL_INTEL,
VIR_DOMAIN_IOMMU_MODEL_SMMUV3,
VIR_DOMAIN_IOMMU_MODEL_VIRTIO,
+ VIR_DOMAIN_IOMMU_MODEL_AMD,
VIR_DOMAIN_IOMMU_MODEL_LAST
} virDomainIOMMUModel;
diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c
index 9cedc8d6d2..483cfbbe08 100644
--- a/src/conf/domain_validate.c
+++ b/src/conf/domain_validate.c
@@ -2986,6 +2986,18 @@ virDomainIOMMUDefValidate(const virDomainIOMMUDef *iommu)
}
break;
+ case VIR_DOMAIN_IOMMU_MODEL_AMD:
+ if (iommu->caching_mode != VIR_TRISTATE_SWITCH_ABSENT ||
+ iommu->eim != VIR_TRISTATE_SWITCH_ABSENT ||
+ iommu->aw_bits != 0 ||
+ iommu->dma_translation != VIR_TRISTATE_SWITCH_ABSENT) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("iommu model '%1$s' doesn't support some additional attributes"),
+ virDomainIOMMUModelTypeToString(iommu->model));
+ return -1;
+ }
+ break;
+
case VIR_DOMAIN_IOMMU_MODEL_INTEL:
case VIR_DOMAIN_IOMMU_MODEL_LAST:
break;
@@ -3003,6 +3015,7 @@ virDomainIOMMUDefValidate(const virDomainIOMMUDef *iommu)
break;
case VIR_DOMAIN_IOMMU_MODEL_VIRTIO:
+ case VIR_DOMAIN_IOMMU_MODEL_AMD:
case VIR_DOMAIN_IOMMU_MODEL_LAST:
break;
}
diff --git a/src/conf/schemas/domaincommon.rng b/src/conf/schemas/domaincommon.rng
index d46eb44588..38a0586f40 100644
--- a/src/conf/schemas/domaincommon.rng
+++ b/src/conf/schemas/domaincommon.rng
@@ -6174,6 +6174,7 @@
<value>intel</value>
<value>smmuv3</value>
<value>virtio</value>
+ <value>amd</value>
</choice>
</attribute>
<interleave>
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index fb70c79a94..de535029a8 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -6051,6 +6051,7 @@ qemuBuildIOMMUCommandLine(virCommand *cmd,
virQEMUCaps *qemuCaps)
{
g_autoptr(virJSONValue) props = NULL;
+ g_autoptr(virJSONValue) wrapperProps = NULL;
const virDomainIOMMUDef *iommu = def->iommu;
if (!iommu)
@@ -6095,6 +6096,32 @@ qemuBuildIOMMUCommandLine(virCommand *cmd,
/* There is no -device for SMMUv3, so nothing to be done here */
return 0;
+ case VIR_DOMAIN_IOMMU_MODEL_AMD:
+ if (virJSONValueObjectAdd(&wrapperProps,
+ "s:driver", "AMDVI-PCI",
+ "s:id", iommu->info.alias,
+ NULL) < 0)
+ return -1;
+
+ if (qemuBuildDeviceAddressProps(wrapperProps, def, &iommu->info) < 0)
+ return -1;
+
+ if (qemuBuildDeviceCommandlineFromJSON(cmd, wrapperProps, def, qemuCaps) < 0)
+ return -1;
+
+ if (virJSONValueObjectAdd(&props,
+ "s:driver", "amd-iommu",
+ "s:pci-id", iommu->info.alias,
+ "S:intremap", qemuOnOffAuto(iommu->intremap),
+ "T:device-iotlb", iommu->iotlb,
+ NULL) < 0)
+ return -1;
+
+ if (qemuBuildDeviceCommandlineFromJSON(cmd, props, def, qemuCaps) < 0)
+ return -1;
+
+ return 0;
+
case VIR_DOMAIN_IOMMU_MODEL_LAST:
default:
virReportEnumRangeError(virDomainIOMMUModel, iommu->model);
@@ -6921,6 +6948,7 @@ qemuBuildMachineCommandLine(virCommand *cmd,
case VIR_DOMAIN_IOMMU_MODEL_INTEL:
case VIR_DOMAIN_IOMMU_MODEL_VIRTIO:
+ case VIR_DOMAIN_IOMMU_MODEL_AMD:
/* These IOMMUs are formatted in qemuBuildIOMMUCommandLine */
break;
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index b73ac9ebf1..d8ab5a03f7 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -941,6 +941,9 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDef *dev,
case VIR_DOMAIN_IOMMU_MODEL_VIRTIO:
return virtioFlags | VIR_PCI_CONNECT_INTEGRATED;
+ case VIR_DOMAIN_IOMMU_MODEL_AMD:
+ return pciFlags | VIR_PCI_CONNECT_INTEGRATED;
+
case VIR_DOMAIN_IOMMU_MODEL_INTEL:
case VIR_DOMAIN_IOMMU_MODEL_SMMUV3:
case VIR_DOMAIN_IOMMU_MODEL_LAST:
@@ -2359,6 +2362,7 @@ qemuDomainAssignDevicePCISlots(virDomainDef *def,
switch (iommu->model) {
case VIR_DOMAIN_IOMMU_MODEL_VIRTIO:
+ case VIR_DOMAIN_IOMMU_MODEL_AMD:
if (virDeviceInfoPCIAddressIsWanted(&iommu->info) &&
qemuDomainPCIAddressReserveNextAddr(addrs, &iommu->info) < 0) {
return -1;
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 97f8f58ffd..ddfb14399a 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -5153,6 +5153,28 @@ qemuValidateDomainDeviceDefIOMMU(const virDomainIOMMUDef *iommu,
}
break;
+ case VIR_DOMAIN_IOMMU_MODEL_AMD:
+ if (!qemuDomainIsQ35(def)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("IOMMU device: '%1$s' is only supported with Q35 machines"),
+ virDomainIOMMUModelTypeToString(iommu->model));
+ return -1;
+ }
+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_AMD_IOMMU_PCI_ID)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("IOMMU device: '%1$s' is not supported with this QEMU binary"),
+ virDomainIOMMUModelTypeToString(iommu->model));
+ return -1;
+ }
+ if (iommu->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
+ iommu->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("IOMMU device: '%1$s' needs a PCI address"),
+ virDomainIOMMUModelTypeToString(iommu->model));
+ return -1;
+ }
+ break;
+
case VIR_DOMAIN_IOMMU_MODEL_LAST:
default:
virReportEnumRangeError(virDomainIOMMUModel, iommu->model);
diff --git a/tests/qemuxmlconfdata/amd-iommu.x86_64-latest.args b/tests/qemuxmlconfdata/amd-iommu.x86_64-latest.args
new file mode 100644
index 0000000000..36244edb3a
--- /dev/null
+++ b/tests/qemuxmlconfdata/amd-iommu.x86_64-latest.args
@@ -0,0 +1,35 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine q35,usb=off,kernel_irqchip=split,dump-guest-core=off,memory-backend=pc.ram,acpi=on \
+-accel kvm \
+-cpu qemu64 \
+-m size=219136k \
+-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":224395264}' \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-device '{"driver":"AMDVI-PCI","id":"iommu0","bus":"pcie.0","addr":"0x1"}' \
+-device '{"driver":"amd-iommu","pci-id":"iommu0","intremap":"on","device-iotlb":true}' \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-global ICH9-LPC.noreboot=off \
+-watchdog-action reset \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxmlconfdata/amd-iommu.x86_64-latest.xml b/tests/qemuxmlconfdata/amd-iommu.x86_64-latest.xml
new file mode 120000
index 0000000000..5ba3d4b91b
--- /dev/null
+++ b/tests/qemuxmlconfdata/amd-iommu.x86_64-latest.xml
@@ -0,0 +1 @@
+amd-iommu.xml
\ No newline at end of file
diff --git a/tests/qemuxmlconfdata/amd-iommu.xml b/tests/qemuxmlconfdata/amd-iommu.xml
new file mode 100644
index 0000000000..0668ed4237
--- /dev/null
+++ b/tests/qemuxmlconfdata/amd-iommu.xml
@@ -0,0 +1,39 @@
+<domain type='kvm'>
+ <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>
+ <acpi/>
+ <ioapic driver='qemu'/>
+ </features>
+ <cpu mode='custom' match='exact' check='none'>
+ <model fallback='forbid'>qemu64</model>
+ </cpu>
+ <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='usb' index='0' model='none'/>
+ <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'/>
+ <audio id='1' type='none'/>
+ <watchdog model='itco' action='reset'/>
+ <memballoon model='none'/>
+ <iommu model='amd'>
+ <driver intremap='on' iotlb='on'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
+ </iommu>
+ </devices>
+</domain>
diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c
index bed562286d..e59ed73088 100644
--- a/tests/qemuxmlconftest.c
+++ b/tests/qemuxmlconftest.c
@@ -2774,6 +2774,8 @@ mymain(void)
DO_TEST_CAPS_LATEST("acpi-table");
DO_TEST_CAPS_LATEST("acpi-table-many");
+ DO_TEST_CAPS_LATEST("amd-iommu");
+
DO_TEST_CAPS_LATEST("intel-iommu");
DO_TEST_CAPS_LATEST("intel-iommu-caching-mode");
DO_TEST_CAPS_LATEST("intel-iommu-eim");
--
2.50.1
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