[Qemu-devel] Re: 2.6.10-mm3: swsusp: out of memory on resume (was: Re: Ho ho ho - Linux v2.6.10)

["Rafael J. Wysocki" <rjw@sisk.pl>]

On Sunday, 16 of January 2005 06:54, hugang@soulinfo.com wrote:
> On Sat, Jan 15, 2005 at 10:20:42PM +0100, Rafael J. Wysocki wrote:
> > > > > > 
> > > > > > 2.6.11-rc1-mm1 
> > > > > >  -> 2005-1-14.core.diff 	core patch		TEST PASSED
> > > > > >   -> 2005-1-14.x86_64.diff	x86_64 patch	NOT TESTED
> > > > > 
> > > > > Unfortunately, on x86_64 it goes south on suspend, probably somwhere in write_pagedir(),
> > > > > but I'm not quite sure as I can't make it print any useful stuff to the serial console
> > > > > (everything is dumped to a virtual tty only).  Seemingly, it prints some
> > > > > "write_pagedir: ..." debug messages and then starts to print garbage in
> > > > > an infinite loop.
> > 
> > I have some good news for you. :-)
> > 
> > The patch actually works fine on my box.  What I thought was a result of an infinite loop,
> > turned out to be "only" a debug output from it, which is _really_ excessive.  After I had
> > commented out the most of pr_debug()s in your code, it works nicely and I like it very
> > much.  Thanks a lot for porting it to x86_64!
> > 
> Cool, Current I making software suspend also works in Qemu X86_64
> emulation, Here is a update patch to making copyback more safed and 
> possible to improve copyback speed.
> 
> I change the swsusp_arch_resume to nosave section, the in memory copy
> back it not touch this code. before not change that to nosave section,
> I'm also geting a infinite loop in copy_one_page, From the qemu in_asm,
> I sure that loop in copy_one_page, when I change it to nosave section,
> that problem go away, I dont' sure tha't good idea to fixed it, but
> current it works in my qemu, Can someone owner x86_64 test it.
> 
> I disable Flush TLB after copy page, It speedup the in qemu, But I can't
> sure the right thing in real machine, can someone give me point.

Could you, please, make a patch against -rc1-mm1 with your previous patch
applied?  It would be much easier to apply. :-)

Greets,
RJW


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