From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: kvm-devel@lists.sourceforge.net, Ian Jackson <Ian.Jackson@eu.citrix.com>
Subject: Re: [kvm-devel] Re: [PATCH 1/6] Use correct types to enable > 2G support
Date: Fri, 1 Feb 2008 21:33:07 +0000 [thread overview]
Message-ID: <200802012133.09400.paul@codesourcery.com> (raw)
In-Reply-To: <47A381B9.1060707@codemonkey.ws>
> virtio could still be made to work with map cache. You would just have
> to change it to be able to map more than one page contiguously. As I
> mentioned though, it just starts getting ugly.
That's why you should be using the cpu_physical_memory_rw routines :-)
Anything that assume large linear accesses (Currently only some of the
embedded LCD controllers) is going to break as soon as you start introducing
IOMMUs. There have been several threads on this list about having a sane DMA
infrastructure.
Paul
WARNING: multiple messages have this Message-ID (diff)
From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: kvm-devel@lists.sourceforge.net, Ian Jackson <Ian.Jackson@eu.citrix.com>
Subject: Re: [kvm-devel] [Qemu-devel] Re: [PATCH 1/6] Use correct types to enable > 2G support
Date: Fri, 1 Feb 2008 21:33:07 +0000 [thread overview]
Message-ID: <200802012133.09400.paul@codesourcery.com> (raw)
In-Reply-To: <47A381B9.1060707@codemonkey.ws>
> virtio could still be made to work with map cache. You would just have
> to change it to be able to map more than one page contiguously. As I
> mentioned though, it just starts getting ugly.
That's why you should be using the cpu_physical_memory_rw routines :-)
Anything that assume large linear accesses (Currently only some of the
embedded LCD controllers) is going to break as soon as you start introducing
IOMMUs. There have been several threads on this list about having a sane DMA
infrastructure.
Paul
next prev parent reply other threads:[~2008-02-01 21:33 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-31 22:36 [PATCH 0/6] Support for the Kernel Virtual Machine interface Anthony Liguori
2008-01-31 22:36 ` [Qemu-devel] " Anthony Liguori
[not found] ` <1201818980-27534-1-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-31 22:36 ` [PATCH 1/6] Use correct types to enable > 2G support Anthony Liguori
2008-01-31 22:36 ` [Qemu-devel] " Anthony Liguori
[not found] ` <1201818980-27534-2-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-31 23:54 ` Paul Brook
2008-01-31 23:54 ` [Qemu-devel] " Paul Brook
[not found] ` <200801312354.24382.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2008-02-01 0:25 ` Anthony Liguori
2008-02-01 0:25 ` [Qemu-devel] " Anthony Liguori
[not found] ` <47A26714.4000204-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01 0:37 ` Paul Brook
2008-02-01 0:37 ` [Qemu-devel] " Paul Brook
[not found] ` <200802010037.30731.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2008-02-01 0:40 ` Anthony Liguori
2008-02-01 0:40 ` [Qemu-devel] " Anthony Liguori
2008-02-01 10:26 ` Fabrice Bellard
2008-02-01 10:26 ` [Qemu-devel] " Fabrice Bellard
[not found] ` <47A2F3C7.6060409-+Yn2HnRVxb5AfugRpC6u6w@public.gmane.org>
2008-02-01 14:35 ` Anthony Liguori
2008-02-01 14:35 ` [Qemu-devel] " Anthony Liguori
[not found] ` <47A32E40.3000204-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01 15:13 ` Avi Kivity
2008-02-01 15:13 ` [Qemu-devel] " Avi Kivity
2008-02-01 11:56 ` Robert William Fuller
2008-02-01 16:09 ` M. Warner Losh
2008-02-01 16:47 ` Philip Boulain
2008-02-01 17:35 ` Jamie Lokier
[not found] ` <47A33721.4020600-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-02-01 15:33 ` Anthony Liguori
2008-02-01 15:33 ` [Qemu-devel] Re: [kvm-devel] " Anthony Liguori
[not found] ` <47A33BC6.3060705-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01 15:40 ` [Qemu-devel] " Ian Jackson
2008-02-01 15:40 ` [Qemu-devel] Re: [kvm-devel] " Ian Jackson
[not found] ` <18339.15712.411486.395238-msK/Ju9w1zmnROeE8kUsYhEHtJm+Wo+I@public.gmane.org>
2008-02-01 17:53 ` [Qemu-devel] " Anthony Liguori
2008-02-01 17:53 ` [kvm-devel] " Anthony Liguori
[not found] ` <47A35C7E.8050309-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2008-02-01 17:57 ` Daniel P. Berrange
2008-02-01 17:57 ` [kvm-devel] " Daniel P. Berrange
[not found] ` <20080201175750.GD22981-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-02-01 20:31 ` Anthony Liguori
2008-02-01 20:31 ` [kvm-devel] " Anthony Liguori
2008-02-01 21:33 ` Paul Brook [this message]
2008-02-01 21:33 ` Paul Brook
2008-02-01 16:00 ` Paul Brook
2008-02-01 16:00 ` [Qemu-devel] " Paul Brook
[not found] ` <200802011600.10877.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2008-02-01 16:21 ` Fabrice Bellard
2008-02-01 16:21 ` [Qemu-devel] " Fabrice Bellard
[not found] ` <47A3471B.7030702-+Yn2HnRVxb5AfugRpC6u6w@public.gmane.org>
2008-02-05 11:34 ` Ian Jackson
2008-02-05 11:34 ` Ian Jackson
2008-02-01 17:49 ` [kvm-devel] " Anthony Liguori
2008-02-01 17:49 ` [Qemu-devel] " Anthony Liguori
2008-02-03 8:58 ` Izik Eidus
2008-02-03 8:58 ` [Qemu-devel] Re: [kvm-devel] " Izik Eidus
2008-01-31 22:36 ` [PATCH 2/6] SCI fixes Anthony Liguori
2008-01-31 22:36 ` [Qemu-devel] " Anthony Liguori
2008-01-31 22:36 ` [PATCH 3/6] Fix daemonize options Anthony Liguori
2008-01-31 22:36 ` [Qemu-devel] " Anthony Liguori
2008-01-31 22:36 ` [PATCH 4/6] Tell BIOS about the number of CPUs Anthony Liguori
2008-01-31 22:36 ` [Qemu-devel] " Anthony Liguori
[not found] ` <1201818980-27534-5-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01 0:14 ` Paul Brook
2008-02-01 0:14 ` [Qemu-devel] " Paul Brook
[not found] ` <200802010014.07960.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2008-02-01 0:28 ` Anthony Liguori
2008-02-01 0:28 ` [Qemu-devel] " Anthony Liguori
[not found] ` <47A26790.6010609-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01 0:40 ` Paul Brook
2008-02-01 0:40 ` [Qemu-devel] " Paul Brook
2008-01-31 22:36 ` [PATCH 5/6] Refactor option ROM loading Anthony Liguori
2008-01-31 22:36 ` [Qemu-devel] " Anthony Liguori
2008-01-31 22:36 ` [PATCH 6/6] QEMU support for the Kernel Virtual Machine interface Anthony Liguori
2008-01-31 22:36 ` [Qemu-devel] " Anthony Liguori
[not found] ` <1201818980-27534-7-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01 9:49 ` Fabrice Bellard
2008-02-01 9:49 ` [Qemu-devel] " Fabrice Bellard
[not found] ` <47A2EB14.8030804-+Yn2HnRVxb5AfugRpC6u6w@public.gmane.org>
2008-02-01 14:18 ` Anthony Liguori
2008-02-01 14:18 ` [Qemu-devel] " Anthony Liguori
2008-01-31 22:53 ` [qemu-devel] [PATCH 0/6] Support " Anthony Liguori
2008-01-31 22:53 ` Anthony Liguori
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