From: Avi Kivity <avi@redhat.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] vga-pci and MMIO BAR
Date: Wed, 25 Jul 2012 13:27:04 +0300 [thread overview]
Message-ID: <500FC9F8.6010002@redhat.com> (raw)
In-Reply-To: <1343188660.3715.41.camel@pasglop>
On 07/25/2012 06:57 AM, Benjamin Herrenschmidt wrote:
> Hi folks !
>
> Would there be any objection to adding a second MMIO BAR to qemu-vga
> which mirrors the bochs magic VBE ports ?
>
> Support for IO space is optional in PCIe and can be problematic on some
> architectures, it would be nice to be able to program the card entirely
> using mmio.
Can we choose a PCIe chipset that does support IO space?
If not, we can add a second BAR, but it should disappear when running an
older machine type.
> Once done, I'd like to look into doing a qemudrmfb similar to the cirrus
> one that pretty much gives you generic KMS support (with RandR) on top
> of vga-pci. This would have the advantage of potentially lifting the
> pitch and size limitations that plague cirrus.
Have a look at qxl.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-07-25 10:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-25 3:57 [Qemu-devel] vga-pci and MMIO BAR Benjamin Herrenschmidt
2012-07-25 10:27 ` Avi Kivity [this message]
2012-07-25 10:53 ` Benjamin Herrenschmidt
2012-07-25 12:48 ` Avi Kivity
2012-07-25 13:41 ` Benjamin Herrenschmidt
2012-07-25 13:59 ` Avi Kivity
2012-07-25 22:01 ` Benjamin Herrenschmidt
2012-07-26 0:22 ` Benjamin Herrenschmidt
2012-07-26 1:08 ` Anthony Liguori
2012-07-26 1:18 ` Benjamin Herrenschmidt
2012-08-06 12:03 ` Gerd Hoffmann
2012-08-06 21:07 ` Benjamin Herrenschmidt
2012-08-10 15:27 ` Alon Levy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=500FC9F8.6010002@redhat.com \
--to=avi@redhat.com \
--cc=benh@kernel.crashing.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).