From: Zachary Amsden <zamsden@redhat.com>
To: "Daniel P. Berrange" <berrange@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Various VGA / VNC fixes and cleanups to prep for multiheaded graphics
Date: Thu, 30 Jul 2009 00:35:24 -1000 [thread overview]
Message-ID: <4A71776C.4030400@redhat.com> (raw)
In-Reply-To: <20090730103406.GG21611@redhat.com>
Daniel P. Berrange wrote:
> For VNC, there is an documented extension which allows for intelligent
> client side handling of multiple displays. Essentially the server VNC
> framebuffer represents the combined real estate of all displays (this
> lets dumb VNC clients work), and the "ExtendedDesktopSize" extension
> allows intelligent clients to query what regions within the framebuffer
> correspond to each display. So it would be useful to implement this in
> QEMU if we're to allow multiple VGA adapters.
This is true, but in this context, is it useful? If one wants multiple
displays, one can easily double the height or width of the virtual
display and run nested servers inside of them.
I think, perhaps, the more useful thing is to allow multiple remote
clients to connect to individual displays... which this patchset has not
quite achieved, but proved at least plausible.
Zach
next prev parent reply other threads:[~2009-07-30 10:39 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-30 10:14 [Qemu-devel] Various VGA / VNC fixes and cleanups to prep for multiheaded graphics Zachary Amsden
2009-07-30 10:14 ` [Qemu-devel] [PATCH 01/14] Add a configure switch to enable / disable all user targets. I felt compelled to do it for symmetry, mostly it is useful to disable user targets when you don't want to build them Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 02/14] Don't segfault when changing VNC password on an SDL display Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 03/14] When using stdio monitor and VNC display, one can set or clear a VNC password; this should set or turn off VNC authentication as well Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 04/14] Clean up VGA type selection; far too many variables being used to track one state leads to confusion if new variables are added Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 05/14] Change cpu_phys mem callback to use [offset, size) bounds instead of [start, end) Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 06/14] Split VGA ioport init into a helper function Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 07/14] Code motion; make mm VGA init function more like standard vga init function. Add missing vga_reset hook to vga_mm_init Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 08/14] Make VGA vram offset passed into vga_mm_init absolute. Since this is a function of the platform, it makes sense to have it be explicitly known in the platform layer rather than hardcoded inside the vga code Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 09/14] Further transformation: use common vga_init() which allows either I/O port or memory mapped based control Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 10/14] Stash VGA physical address and use it in KVM callbacks. Stash VGA physical pointer in cirrus vga as well Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 11/14] Add some defined constants for VGA offsets Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 12/14] Add a PCI BAR for the VGA ROM which is mapped into cirrus_vga. This makes the cirrus device complete under some X servers which require the V_BIOS mapping Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 13/14] Allow cirrus VGA to be initialized multiple times; only the first init takes the ISA memory region and hardware I/O ports Zachary Amsden
2009-07-30 10:15 ` [Qemu-devel] [PATCH 14/14] Atrocious and horrendous patch to demonstrate multiple SDL displays. The multiple SDL displays can be seen on one console, using ctrl-alt-1/2 to switch between them Zachary Amsden
2009-07-30 11:03 ` [Qemu-devel] Re: [PATCH 07/14] Code motion; make mm VGA init function more like standard vga init function. Add missing vga_reset hook to vga_mm_init Jan Kiszka
2009-07-30 11:03 ` [Qemu-devel] Re: [PATCH 05/14] Change cpu_phys mem callback to use [offset, size) bounds instead of [start, end) Jan Kiszka
2009-08-10 19:42 ` [Qemu-devel] " Anthony Liguori
2009-07-30 10:34 ` [Qemu-devel] Various VGA / VNC fixes and cleanups to prep for multiheaded graphics Daniel P. Berrange
2009-07-30 10:35 ` Zachary Amsden [this message]
2009-07-30 11:33 ` Paul Brook
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