From: Gerd Hoffmann <kraxel@redhat.com>
To: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>,
edk2-devel-01 <edk2-devel@ml01.01.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: Re: [PATCH 00/11] OvmfPkg, ArmVirtPkg: GOP driver for the VirtIo GPU (virtio-gpu-pci)
Date: Mon, 05 Sep 2016 16:17:22 +0200 [thread overview]
Message-ID: <1473085042.9260.43.camel@redhat.com> (raw)
In-Reply-To: <147275957055.21562.7750188759462698423@jljusten-ivb>
Hi,
> Is there no chance that ARM KVM might someday also be able to support
> a framebuffer?
Problem on arm is that you can't expose something as pci memory to the
guest which in reality isn't pci memory but normal ram (like the
emulated vga memory pci bar).
Storing a framebuffer in normal ram is (as far I know) no problem. But
updates are a problem then, you have to:
(a) notify the host about updates (which is what virtio-gpu does), or
(b) turn on dirty tracking for *all* guest ram so you can detect
display updates automatically (lot of overhead, vga needs dirty
tracking only for the 16M pci bar), or
(c) update whole framebuffer unconditionally in regular intervals
(doesn't look great too).
cheers,
Gerd
next prev parent reply other threads:[~2016-09-05 14:17 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-19 12:49 [PATCH 00/11] OvmfPkg, ArmVirtPkg: GOP driver for the VirtIo GPU (virtio-gpu-pci) Laszlo Ersek
2016-08-19 12:49 ` [PATCH 01/11] OvmfPkg/QemuVideoDxe: don't incorrectly bind virtio-gpu-pci Laszlo Ersek
2016-08-19 12:49 ` [PATCH 02/11] OvmfPkg/Virtio10Dxe: don't bind virtio-vga Laszlo Ersek
2016-08-19 12:49 ` [PATCH 03/11] OvmfPkg/PlatformBootManagerLib: relax device class requirement for ConOut Laszlo Ersek
2016-08-19 12:49 ` [PATCH 04/11] OvmfPkg/IndustryStandard: add type definitions for the virtio GPU device Laszlo Ersek
2016-08-19 12:49 ` [PATCH 05/11] OvmfPkg/VirtioGpuDxe: introduce with Component Name 2 and Driver Binding Laszlo Ersek
2016-08-19 12:49 ` [PATCH 06/11] OvmfPkg: include VirtioGpuDxe in the platform DSC/FDF files Laszlo Ersek
2016-08-19 12:49 ` [PATCH 07/11] ArmVirtPkg/ArmVirtQemu: " Laszlo Ersek
2016-08-19 13:14 ` Ard Biesheuvel
2016-08-19 12:49 ` [PATCH 08/11] OvmfPkg/VirtioGpuDxe: initialize and tear down VirtIo GPU device Laszlo Ersek
2016-08-19 12:49 ` [PATCH 09/11] OvmfPkg/VirtioGpuDxe: provide functions for sending VirtIo GPU commands Laszlo Ersek
2016-08-19 12:49 ` [PATCH 10/11] OvmfPkg/VirtioGpuDxe: implement EFI_GRAPHICS_OUTPUT_PROTOCOL Laszlo Ersek
2016-08-19 12:49 ` [PATCH 11/11] ArmVirtPkg: remove PcdKludgeMapPciMmioAsCached Laszlo Ersek
2016-08-19 13:16 ` Ard Biesheuvel
2016-08-19 13:06 ` [PATCH 00/11] OvmfPkg, ArmVirtPkg: GOP driver for the VirtIo GPU (virtio-gpu-pci) Ard Biesheuvel
2016-08-19 14:25 ` Laszlo Ersek
2016-08-31 20:43 ` Jordan Justen
2016-09-01 7:44 ` Ard Biesheuvel
2016-09-01 16:48 ` Laszlo Ersek
2016-09-01 16:29 ` Laszlo Ersek
2016-09-01 18:03 ` Jordan Justen
2016-09-01 18:46 ` Laszlo Ersek
2016-09-01 19:52 ` Jordan Justen
2016-09-01 20:23 ` Ard Biesheuvel
2016-09-01 20:26 ` Ard Biesheuvel
2016-09-01 20:52 ` Jordan Justen
2016-09-01 20:44 ` Laszlo Ersek
2016-09-05 14:17 ` Gerd Hoffmann [this message]
2016-08-30 15:07 ` Laszlo Ersek
2016-09-01 20:32 ` Jordan Justen
2016-09-01 21:07 ` Laszlo Ersek
2016-09-01 22:02 ` Laszlo Ersek
[not found] ` <57CD6463.90903@suse.de>
2016-09-05 12:56 ` Laszlo Ersek
[not found] ` <57CD6C25.7000406@suse.de>
2016-09-05 13:17 ` Laszlo Ersek
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