From: Jamie Lokier <jamie@shareable.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] add 'monitor' and 'mwait' instruction (update)
Date: Sun, 9 Jul 2006 16:21:45 +0100 [thread overview]
Message-ID: <20060709152145.GB31080@mail.shareable.org> (raw)
In-Reply-To: <44B10282.3060707@armiento.net>
R. Armiento wrote:
> I'm not sure if I have understood all sources from where such a
> memory write can come from while the processor is asleep. One
> source, I suppose, is from other processors in an SMP setup? Another
> source may be DMA? Does this mean that it is safe to emulate wmait
> as hlt if neiter SMP or DMA is used?
Yes, and yes. More specifically, DMA to RAM (DMA from RAM to device
doesn't matter).
> (Qemu hardware doesn't support DMA, right?)
I'm pretty sure it does.
-- Jamie
next prev parent reply other threads:[~2006-07-09 15:21 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-06 15:13 [Qemu-devel] Pentium D with guest Ubuntu 6.06 server kernel panic with kqemu R. Armiento
2006-07-07 9:06 ` Joachim Henke
2006-07-07 9:39 ` Jens Axboe
2006-07-07 13:39 ` R. Armiento
2006-07-07 12:30 ` [Qemu-devel] [PATCH] add 'monitor' and 'mwait' instruction Joachim Henke
2006-07-07 12:57 ` maestro
2006-07-07 13:22 ` Joachim Henke
2006-07-07 15:21 ` Joachim Henke
2006-07-07 13:18 ` [Qemu-devel] [PATCH] add 'monitor' and 'mwait' instruction (update) Joachim Henke
2006-07-07 13:20 ` Joachim Henke
2006-07-08 13:16 ` R. Armiento
2006-07-08 15:01 ` [Qemu-devel] " Joachim Henke
2006-07-08 20:50 ` R. Armiento
2006-07-09 8:54 ` Joachim Henke
2006-07-09 13:20 ` R. Armiento
2006-07-09 11:30 ` Paul Brook
2006-07-09 15:25 ` Jamie Lokier
2006-07-09 13:03 ` [Qemu-devel] 'monitor' and 'mwait' instruction Joachim Henke
2006-07-09 15:21 ` Jamie Lokier [this message]
2006-07-09 15:11 ` [Qemu-devel] add 'monitor' and 'mwait' instruction (update) Jamie Lokier
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