From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Avi Kivity <avi@redhat.com>, Nathan Froyd <froydnj@codesourcery.com>
Subject: Re: [Qemu-devel] [PATCH] [RFC] cleanup cpu-exec.c: consolidate handle_cpu_signal
Date: Thu, 30 Apr 2009 18:07:35 +0100 [thread overview]
Message-ID: <200904301807.36073.paul@codesourcery.com> (raw)
In-Reply-To: <49F9D329.3030008@redhat.com>
On Thursday 30 April 2009, Avi Kivity wrote:
> Paul Brook wrote:
> > This is most likely a remnant of the long-deceased qemu-fast, which used
> > mmap tricks to avoid MMU emulation in system mode.
>
> I'd really like to see kvm used to implement something like this (to
> emulate non-x86 on x86).
It's something I've considered a few times. It gets hairy fairly quickly
though. You're probably also going to hit a world of pain if your host
pagesize is larger than your guest pagesize, and for guests with a software
managed TLB shadow paging gets much more interesting.
There's very little of the old code left, and it's bitrotten enough that
there's no point trying to keep it on the offchance that it'll be useful.
Paul
next prev parent reply other threads:[~2009-04-30 17:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-22 1:33 [Qemu-devel] [PATCH] [RFC] cleanup cpu-exec.c: consolidate handle_cpu_signal Nathan Froyd
2009-04-30 16:10 ` Paul Brook
2009-04-30 16:34 ` Avi Kivity
2009-04-30 17:07 ` Paul Brook [this message]
2009-04-30 17:56 ` Avi Kivity
2009-04-30 18:52 ` Blue Swirl
2009-04-30 18:57 ` Avi Kivity
2009-04-30 19:05 ` Blue Swirl
2009-04-30 20:52 ` Laurent Desnogues
2009-08-01 20:42 ` Filip Navara
2009-08-03 15:59 ` Nathan Froyd
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