Re: comments on irc log

[Pavel Machek <pavel-AlSwsSmVLrQ@public.gmane.org>]

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Hi!

> > > This is sort-of breaking the rule of "no DMA", and thus is not suitable
> > > for kexec (which is ok, kexec currently uses the separate "shutdown"
> > > callback which must switch DMA off), but would fix the problem for
> > > suspend to disk...
> > 
> > What problem? suspend seems to +/- work with suspend-to-disk just
> > now. I'd really hate to have to think about "some memory may change
> > behind my back" during suspend. I think "no DMA" is a good rule.
> 
> Well, it's not that simple. It may work for you and not for others, and
> it will definitely introduce complications with the current scheme since
> it seems we +/- have to suspend USB busses (and possibly disconnect some
> devices) at freeze time...

Okay, I see that can be slow. Is there any other problem?

...and I probably would not want to suspend to my external usb2
disk... Ok, that might be small problem.
							Pavel
-- 
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