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

[Jamie Lokier]

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