linux-kernel - Re: [patch] PM: suspend/resume debugging should depend on SOFTWARE

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Date:	Sun, 19 Nov 2006 15:21:42 -0800 (PST)
From:	Linus Torvalds <torvalds@...l.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	Chuck Ebbert <76306.1226@...puserve.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [patch] PM: suspend/resume debugging should depend on 
 SOFTWARE_SUSPEND

On Sun, 19 Nov 2006, Rafael J. Wysocki wrote:
> > concept works anywhere that has a CMOS chip, so if somebody were to spend 
> > a few minutes testing it on x86-64 and others, it would work elsewhere 
> > too..
> 
> I can do that if someone gives me the code.

Well, I actually _think_ it works almost as-is on x86-64 too, but the 
magic is all in that small inline asm thing in <linux/resume-trace.h>.

The ".long" in that inline asm probably needs to be a ".quad" - see gow 
"generate_resume_trace()" uses it.

Also the "show_file_hash()" right now has a "tracedata += 6", and it 
should probably be "tracedata += 2 + sizeof(void *)" instead.

IOW, it really should be very easy to get to work on x86-64, I just 
haven't had the energy or inclination, since the only devices I've 
personally used it on have been regular 32-bit ones..

		Linus
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