External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-12-28 08:35:22 +00:00
Code Issues Packages Projects Releases Wiki Activity
2811e29e10
libvirt/tests/qemuxml2argvdata/qemuxml2argv-aarch64-video-virtio-gpu-pci.args

28 lines
749 B
Plaintext
Raw Normal View History

qemu: map "virtio" video model to "virt" machtype correctly (arm/aarch64) Most of QEMU's PCI display device models, such as: libvirt video/model/@type QEMU -device ------------------------- ------------ cirrus cirrus-vga vga VGA qxl qxl-vga virtio virtio-vga come with a linear framebuffer (sometimes called "VGA compatibility framebuffer"). This linear framebuffer lives in one of the PCI device's MMIO BARs, and allows guest code (primarily: firmware drivers, and non-accelerated OS drivers) to display graphics with direct memory access. Due to architectural reasons on aarch64/KVM hosts, this kind of framebuffer doesn't / can't work in qemu-system-(arm|aarch64) -M virt machines. Cache coherency issues guarantee a corrupted / unusable display. The problem has been researched by several people, including kvm-arm maintainers, and it's been decided that the best way (practically the only way) to have boot time graphics for such guests is to consolidate on QEMU's "virtio-gpu-pci" device. >From <https://bugzilla.redhat.com/show_bug.cgi?id=1195176>, libvirt supports <devices> <video> <model type='virtio'/> </video> </devices> but libvirt unconditionally maps @type='virtio' to QEMU's "virtio-vga" device model. (See the qemuBuildDeviceVideoStr() function and the "qemuDeviceVideo" enum impl.) According to the above, this is not right for the "virt" machine type; the qemu-system-(arm|aarch64) binaries don't even recognize the "virtio-vga" device model (justifiedly). Whereas "virtio-gpu-pci", which is a pure virtio device without a compatibility framebuffer, is available, and works fine. (The ArmVirtQemu ("AAVMF") platform of edk2 -- that is, the UEFI firmware for "virt" -- supports "virtio-gpu-pci", as of upstream commit 3ef3209d3028. See <https://tianocore.acgmultimedia.com/show_bug.cgi?id=66>.) Override the default mapping of "virtio", from "virtio-vga" to "virtio-gpu-pci", if qemuDomainMachineIsVirt() evaluates to true. Cc: Andrea Bolognani <abologna@redhat.com> Cc: Drew Jones <drjones@redhat.com> Cc: Marc-André Lureau <marcandre.lureau@redhat.com> Cc: Martin Kletzander <mkletzan@redhat.com> Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com> Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1372901 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Acked-by: Martin Kletzander <mkletzan@redhat.com>
2016-09-16 07:30:23 +00:00
LC_ALL=C \
PATH=/bin \
HOME=/home/test \
USER=test \
LOGNAME=test \
QEMU_AUDIO_DRV=none \
tests: unify qemu binary paths for all qemu related tests Our test data used a lot of different qemu binary paths and some of them were based on downstream systems. Note that there is one file where I had to add "accel=kvm" because the qemuargv2xml code parses "/usr/bin/kvm" as virt type="kvm". Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2017-04-06 16:19:48 +00:00
/usr/bin/qemu-system-aarch64 \
qemu: map "virtio" video model to "virt" machtype correctly (arm/aarch64) Most of QEMU's PCI display device models, such as: libvirt video/model/@type QEMU -device ------------------------- ------------ cirrus cirrus-vga vga VGA qxl qxl-vga virtio virtio-vga come with a linear framebuffer (sometimes called "VGA compatibility framebuffer"). This linear framebuffer lives in one of the PCI device's MMIO BARs, and allows guest code (primarily: firmware drivers, and non-accelerated OS drivers) to display graphics with direct memory access. Due to architectural reasons on aarch64/KVM hosts, this kind of framebuffer doesn't / can't work in qemu-system-(arm|aarch64) -M virt machines. Cache coherency issues guarantee a corrupted / unusable display. The problem has been researched by several people, including kvm-arm maintainers, and it's been decided that the best way (practically the only way) to have boot time graphics for such guests is to consolidate on QEMU's "virtio-gpu-pci" device. >From <https://bugzilla.redhat.com/show_bug.cgi?id=1195176>, libvirt supports <devices> <video> <model type='virtio'/> </video> </devices> but libvirt unconditionally maps @type='virtio' to QEMU's "virtio-vga" device model. (See the qemuBuildDeviceVideoStr() function and the "qemuDeviceVideo" enum impl.) According to the above, this is not right for the "virt" machine type; the qemu-system-(arm|aarch64) binaries don't even recognize the "virtio-vga" device model (justifiedly). Whereas "virtio-gpu-pci", which is a pure virtio device without a compatibility framebuffer, is available, and works fine. (The ArmVirtQemu ("AAVMF") platform of edk2 -- that is, the UEFI firmware for "virt" -- supports "virtio-gpu-pci", as of upstream commit 3ef3209d3028. See <https://tianocore.acgmultimedia.com/show_bug.cgi?id=66>.) Override the default mapping of "virtio", from "virtio-vga" to "virtio-gpu-pci", if qemuDomainMachineIsVirt() evaluates to true. Cc: Andrea Bolognani <abologna@redhat.com> Cc: Drew Jones <drjones@redhat.com> Cc: Marc-André Lureau <marcandre.lureau@redhat.com> Cc: Martin Kletzander <mkletzan@redhat.com> Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com> Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1372901 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Acked-by: Martin Kletzander <mkletzan@redhat.com>
2016-09-16 07:30:23 +00:00
-name aarch64-vgpu \
-S \
-M virt \
-cpu cortex-a57 \
-m 1024 \
-smp 1,sockets=1,cores=1,threads=1 \
-uuid f3197c89-6457-44fe-b26d-897090ba6541 \
-nographic \
-nodefconfig \
-nodefaults \
-monitor unix:/tmp/lib/domain--1-aarch64-vgpu/monitor.sock,server,nowait \
qemu: Enforce ACPI, UEFI requirements Depending on the architecture, requirements for ACPI and UEFI can be different; more specifically, while on x86 UEFI requires ACPI, on aarch64 it's the other way around. Enforce these requirements when validating the domain, and make the error message more accurate by mentioning that they're not necessarily applicable to all architectures. Several aarch64 test cases had to be tweaked because they would have failed the validation step otherwise.
2017-03-09 15:38:26 +00:00
-no-acpi \
qemu: map "virtio" video model to "virt" machtype correctly (arm/aarch64) Most of QEMU's PCI display device models, such as: libvirt video/model/@type QEMU -device ------------------------- ------------ cirrus cirrus-vga vga VGA qxl qxl-vga virtio virtio-vga come with a linear framebuffer (sometimes called "VGA compatibility framebuffer"). This linear framebuffer lives in one of the PCI device's MMIO BARs, and allows guest code (primarily: firmware drivers, and non-accelerated OS drivers) to display graphics with direct memory access. Due to architectural reasons on aarch64/KVM hosts, this kind of framebuffer doesn't / can't work in qemu-system-(arm|aarch64) -M virt machines. Cache coherency issues guarantee a corrupted / unusable display. The problem has been researched by several people, including kvm-arm maintainers, and it's been decided that the best way (practically the only way) to have boot time graphics for such guests is to consolidate on QEMU's "virtio-gpu-pci" device. >From <https://bugzilla.redhat.com/show_bug.cgi?id=1195176>, libvirt supports <devices> <video> <model type='virtio'/> </video> </devices> but libvirt unconditionally maps @type='virtio' to QEMU's "virtio-vga" device model. (See the qemuBuildDeviceVideoStr() function and the "qemuDeviceVideo" enum impl.) According to the above, this is not right for the "virt" machine type; the qemu-system-(arm|aarch64) binaries don't even recognize the "virtio-vga" device model (justifiedly). Whereas "virtio-gpu-pci", which is a pure virtio device without a compatibility framebuffer, is available, and works fine. (The ArmVirtQemu ("AAVMF") platform of edk2 -- that is, the UEFI firmware for "virt" -- supports "virtio-gpu-pci", as of upstream commit 3ef3209d3028. See <https://tianocore.acgmultimedia.com/show_bug.cgi?id=66>.) Override the default mapping of "virtio", from "virtio-vga" to "virtio-gpu-pci", if qemuDomainMachineIsVirt() evaluates to true. Cc: Andrea Bolognani <abologna@redhat.com> Cc: Drew Jones <drjones@redhat.com> Cc: Marc-André Lureau <marcandre.lureau@redhat.com> Cc: Martin Kletzander <mkletzan@redhat.com> Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com> Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1372901 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Acked-by: Martin Kletzander <mkletzan@redhat.com>
2016-09-16 07:30:23 +00:00
-device ioh3420,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,\
addr=0x1 \
-device ioh3420,port=0x9,chassis=2,id=pci.2,bus=pcie.0,multifunction=on,\
addr=0x1.0x1 \
-device virtio-net-pci,vlan=0,id=net0,mac=52:54:00:73:34:53,bus=pci.1,addr=0x0,\
bootindex=1 \
-net user,vlan=0,name=hostnet0 \
-device virtio-gpu-pci,id=video0,bus=pci.2,addr=0x0
Reference in New Issue Copy Permalink