From: Gerd Hoffmann <kraxel@redhat.com> To: qemu-devel@nongnu.org Cc: igvt-g@ml01.01.org, xen-devel@lists.xensource.com, Eduardo Habkost <ehabkost@redhat.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Gerd Hoffmann <kraxel@redhat.com>, vfio-users@redhat.com Subject: [Qemu-devel] [PATCH v2 00/10] igd passthrough chipset tweaks Date: Mon, 14 Dec 2015 12:39:31 +0100 [thread overview] Message-ID: <1450093182-3500-1-git-send-email-kraxel@redhat.com> (raw) Hi, We have some code in our tree to support pci passthrough of intel graphics devices (igd) on xen, which requires some chipset tweaks for (a) the host bridge and (b) the lpc/isa-bridge to meat the expectations of the guest driver. For kvm we need pretty much the same, also the requirements for vgpu (xengt/kvmgt) are very simliar. This patch wires up the existing support for kvm. It also brings a bunch of bugfixes and cleanups. Unfortunaly the oldish laptop I had planned to use for testing turned out to have no working iommu support for igd, so this patch series still has seen very light testing only. Any testing feedback is very welcome. Testing with kvm/i440fx: Add '-M pc,igd-passthru=on -device igd-passthrough-isa-bridge,addr=1f' to turn on the chipset tweaks. Passthrough the igd using vfio. Testing with kvm/q35: Add '-M q35,igd-passthru=on' to turn on the the chipset tweaks. Pick up the linux kernel patch referenced in patch #10, build a custom kernel with it. Passthrough the igd using vfio. Testing with xen: Existing setups should continue working ;) Changes in v2: * Added igd-passthrough-isa-bridge support form kvm. * Added patch to drop has_igd_gfx_passthru. TODO: * Possibly handle igd-passthrough-isa-bridge automatically (see patch 10). * Figure a way to handle the opregion, probably via vfio extension. Beyond the scope of this patch series, but probably needed to make laptop panels work correctly. Gerd Hoffmann (10): pc: wire up TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE for !xen pc: remove has_igd_gfx_passthru global pc: move igd support code to igd.c igd: switch TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE to realize igd: TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE: call parent realize igd: use defines for standard pci config space offsets igd: revamp host config read igd: add q35 support igd: move igd-passthrough-isa-bridge to igd.c too igd: handle igd-passthrough-isa-bridge setup in realize() hw/i386/pc_piix.c | 124 ++----------------------------- hw/pci-host/Makefile.objs | 3 + hw/pci-host/igd.c | 181 ++++++++++++++++++++++++++++++++++++++++++++++ hw/pci-host/piix.c | 88 ---------------------- hw/pci-host/q35.c | 6 +- hw/xen/xen_pt.h | 3 +- vl.c | 10 --- 7 files changed, 195 insertions(+), 220 deletions(-) create mode 100644 hw/pci-host/igd.c -- 1.8.3.1
WARNING: multiple messages have this Message-ID (diff)
From: Gerd Hoffmann <kraxel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> To: qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org Cc: igvt-g-y27Ovi1pjclAfugRpC6u6w@public.gmane.org, xen-devel-GuqFBffKawuULHF6PoxzQEEOCMrvLtNR@public.gmane.org, Eduardo Habkost <ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Stefano Stabellini <stefano.stabellini-mvvWK6WmYclDPfheJLI6IQ@public.gmane.org>, vfio-users-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org Subject: [PATCH v2 00/10] igd passthrough chipset tweaks Date: Mon, 14 Dec 2015 12:39:31 +0100 [thread overview] Message-ID: <1450093182-3500-1-git-send-email-kraxel@redhat.com> (raw) Hi, We have some code in our tree to support pci passthrough of intel graphics devices (igd) on xen, which requires some chipset tweaks for (a) the host bridge and (b) the lpc/isa-bridge to meat the expectations of the guest driver. For kvm we need pretty much the same, also the requirements for vgpu (xengt/kvmgt) are very simliar. This patch wires up the existing support for kvm. It also brings a bunch of bugfixes and cleanups. Unfortunaly the oldish laptop I had planned to use for testing turned out to have no working iommu support for igd, so this patch series still has seen very light testing only. Any testing feedback is very welcome. Testing with kvm/i440fx: Add '-M pc,igd-passthru=on -device igd-passthrough-isa-bridge,addr=1f' to turn on the chipset tweaks. Passthrough the igd using vfio. Testing with kvm/q35: Add '-M q35,igd-passthru=on' to turn on the the chipset tweaks. Pick up the linux kernel patch referenced in patch #10, build a custom kernel with it. Passthrough the igd using vfio. Testing with xen: Existing setups should continue working ;) Changes in v2: * Added igd-passthrough-isa-bridge support form kvm. * Added patch to drop has_igd_gfx_passthru. TODO: * Possibly handle igd-passthrough-isa-bridge automatically (see patch 10). * Figure a way to handle the opregion, probably via vfio extension. Beyond the scope of this patch series, but probably needed to make laptop panels work correctly. Gerd Hoffmann (10): pc: wire up TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE for !xen pc: remove has_igd_gfx_passthru global pc: move igd support code to igd.c igd: switch TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE to realize igd: TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE: call parent realize igd: use defines for standard pci config space offsets igd: revamp host config read igd: add q35 support igd: move igd-passthrough-isa-bridge to igd.c too igd: handle igd-passthrough-isa-bridge setup in realize() hw/i386/pc_piix.c | 124 ++----------------------------- hw/pci-host/Makefile.objs | 3 + hw/pci-host/igd.c | 181 ++++++++++++++++++++++++++++++++++++++++++++++ hw/pci-host/piix.c | 88 ---------------------- hw/pci-host/q35.c | 6 +- hw/xen/xen_pt.h | 3 +- vl.c | 10 --- 7 files changed, 195 insertions(+), 220 deletions(-) create mode 100644 hw/pci-host/igd.c -- 1.8.3.1
next reply other threads:[~2015-12-14 11:40 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-12-14 11:39 Gerd Hoffmann [this message] 2015-12-14 11:39 ` [PATCH v2 00/10] igd passthrough chipset tweaks Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH] ehci: make idt processing more robust Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 01/10] pc: wire up TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE for !xen Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 02/10] pc: remove has_igd_gfx_passthru global Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-17 17:45 ` [Qemu-devel] " Eduardo Habkost 2015-12-17 17:45 ` Eduardo Habkost 2015-12-18 7:46 ` [Qemu-devel] " Gerd Hoffmann 2015-12-18 7:46 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 03/10] pc: move igd support code to igd.c Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 04/10] igd: switch TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE to realize Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 05/10] igd: TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE: call parent realize Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 06/10] igd: use defines for standard pci config space offsets Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 07/10] igd: revamp host config read Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 08/10] igd: add q35 support Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 09/10] igd: move igd-passthrough-isa-bridge to igd.c too Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann 2015-12-14 11:39 ` [Qemu-devel] [PATCH v2 10/10] igd: handle igd-passthrough-isa-bridge setup in realize() Gerd Hoffmann 2015-12-14 11:39 ` Gerd Hoffmann
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