Hi all, Currently, we are working to add VirtIO GPU and Passthrough GPU support on Xen. We expected to use HVM on domU and PVH on dom0. The x86 PVH dom0 support needs a few modifications on our APU platform. These functions requires multiple software components support including kernel, xen, qemu, mesa, and virglrenderer. Please see the patch series on Xen and QEMU bleow. Xen: https://lists.xenproject.org/archives/html/xen-devel/2023-03/msg00714.html QEMU: https://lists.nongnu.org/archive/html/qemu-devel/2023-03/msg03972.html Kernel part mainly adds the PVH dom0 support: 1) Enable Xen PVH dom0 for AMDGPU Please check patch 1 to 3, that enable Xen PVH dom0 on amdgpu. Because we would like to use hardware IOMMU instead of swiotlb for buffer copy, PV dom0 only supported swiotlb. There still some workarounds in the kernel need to dig it out like below https://git.kernel.org/pub/scm/linux/kernel/git/rui/linux.git/commit/?h=upstream-fox-xen&id=9bee65dd3498dfc6aad283d22ff641198b5c91ed 2) Add PCIe Passthrough (GPU) on Xen PVH dom0 Please check patch 4 to 5, this implements acpi_register_gsi_xen_pvh API to register GSI for guest domU, amd make a new privcmd to handle the GSI from the IRQ. Below are the screenshot of these functions, please take a look. Passthrough GPU: https://drive.google.com/file/d/17onr5gvDK8KM_LniHTSQEI2hGJZlI09L/view?usp=share_link Venus: https://drive.google.com/file/d/1_lPq6DMwHu1JQv7LUUVRx31dBj0HJYcL/view?usp=share_link Zink: https://drive.google.com/file/d/1FxLmKu6X7uJOxx1ZzwOm1yA6IL5WMGzd/view?usp=share_link Repositories Kernel: https://git.kernel.org/pub/scm/linux/kernel/git/rui/linux.git/log/?h=upstream-fox-xen Xen: https://gitlab.com/huangrui123/xen/-/commits/upstream-for-xen QEMU: https://gitlab.com/huangrui123/qemu/-/commits/upstream-for-xen Mesa: https://gitlab.freedesktop.org/rui/mesa/-/commits/upstream-for-xen Virglrenderer: https://gitlab.freedesktop.org/rui/virglrenderer/-/commits/upstream-for-xen We are writting the documentation on xen wiki page, and will update it in feature version. Thanks, Ray Chen Jiqian (2): x86/xen: acpi registers gsi for xen pvh xen/privcmd: add IOCTL_PRIVCMD_GSI_FROM_IRQ Huang Rui (3): x86/xen: disable swiotlb for xen pvh xen/grants: update initialization order of xen grant table drm/amdgpu: set passthrough mode for xen pvh/hvm arch/x86/include/asm/apic.h | 7 ++++ arch/x86/include/asm/xen/pci.h | 5 +++ arch/x86/kernel/acpi/boot.c | 2 +- arch/x86/kernel/pci-dma.c | 8 ++++- arch/x86/pci/xen.c | 43 ++++++++++++++++++++++++ arch/x86/xen/grant-table.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 3 +- drivers/xen/events/events_base.c | 39 +++++++++++++++++++++ drivers/xen/grant-table.c | 2 +- drivers/xen/privcmd.c | 20 +++++++++++ include/uapi/xen/privcmd.h | 7 ++++ include/xen/events.h | 5 +++ 12 files changed, 138 insertions(+), 5 deletions(-) -- 2.25.1
