[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] add 'monitor' and 'mwait' instruction (update)

From: Jamie Lokier
Subject: Re: [Qemu-devel] add 'monitor' and 'mwait' instruction (update)
Date: Sun, 9 Jul 2006 16:21:45 +0100
User-agent: Mutt/1.4.1i

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

reply via email to

[Prev in Thread] Current Thread [Next in Thread]