From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] PATCH/RFC: PCI memory mapping
Date: Fri, 3 Apr 2009 15:28:45 +0000 [thread overview]
Message-ID: <200904031628.45716.paul@codesourcery.com> (raw)
In-Reply-To: <1238771149.28860.75.camel@nibbler.dlib.indiana.edu>
> So, for example, a cirrus vga device on bus 1 when calling:
>
> cpu_register_physical_memory(addr, s->vram_size,
> s->cirrus_linear_io_addr);
Ah, that's a different (but somewhat related) problem. This is for accesses
from the CPU to the device. Most current IOMMU effect device->CPU
accesses[1].
Paul
[1] For practical purposes assume the the CPU and system ram are on the same
bus.
next prev parent reply other threads:[~2009-04-03 15:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-02 14:57 [Qemu-devel] PATCH/RFC: PCI memory mapping Brian Wheeler
2009-04-02 15:18 ` [Qemu-devel] " Tristan Gingold
2009-04-02 17:23 ` Brian Wheeler
2009-04-02 17:32 ` [Qemu-devel] " Blue Swirl
2009-04-02 17:42 ` Brian Wheeler
2009-04-02 22:40 ` Paul Brook
2009-04-03 15:05 ` Brian Wheeler
2009-04-03 15:28 ` Paul Brook [this message]
2009-04-03 16:01 ` Brian Wheeler
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=200904031628.45716.paul@codesourcery.com \
--to=paul@codesourcery.com \
--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).