From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Zachary Amsden <zamsden@redhat.com>
Subject: Re: [Qemu-devel] Various VGA / VNC fixes and cleanups to prep for multiheaded graphics
Date: Thu, 30 Jul 2009 12:33:34 +0100 [thread overview]
Message-ID: <200907301233.56681.paul@codesourcery.com> (raw)
In-Reply-To: <4A71776C.4030400@redhat.com>
On Thursday 30 July 2009, Zachary Amsden wrote:
> 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.
If you just want twice as screen real estate on a desktop system then yes, you
can increase the resolution. However in many cases we actually want multiple
independent displays.
Paul
prev parent reply other threads:[~2009-07-30 11:34 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
2009-07-30 11:33 ` Paul Brook [this message]
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