linux-kernel - Re: [Fastboot] [RFC] [PATCH 10/16] x86

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Message-ID: <20061115212411.GF9039@in.ibm.com>
Date:	Wed, 15 Nov 2006 16:24:11 -0500
From:	Vivek Goyal <vgoyal@...ibm.com>
To:	linux kernel mailing list <linux-kernel@...r.kernel.org>
Cc:	akpm@...l.org, ebiederm@...ssion.com, hpa@...or.com,
	Reloc Kernel List <fastboot@...ts.osdl.org>,
	magnus.damm@...il.com, ak@...e.de, pavel@...e.cz, rjw@...k.pl
Subject: Re: [Fastboot] [RFC] [PATCH 10/16] x86_64: 64bit PIC ACPI wakeup

On Mon, Nov 13, 2006 at 11:43:14AM -0500, Vivek Goyal wrote:
> 
> 
> - Killed lots of dead code
> - Improve the cpu sanity checks to verify long mode
>   is enabled when we wake up.
> - Removed the need for modifying any existing kernel page table.
> - Moved wakeup_level4_pgt into the wakeup routine so we can
>   run the kernel above 4G.
> - Increased the size of the wakeup routine to 8K.
> - Renamed the variables to use the 64bit register names.
> - Lots of misc cleanups to match trampoline.S
> 
> I don't have a configuration I can test this but it compiles cleanly
> and it should work, the code is very similar to the SMP trampoline,
> which I have tested.  At least now the comments about still running in
> low memory are actually correct.
> 
> Vivek has tested this patch for suspend to memory and it works fine.
> 

More update. Got hold of another machine and suspend/resume seems to be
facing problems.

With 2.6.19-rc5-git2
--------------------
- echo 3 > /proc/acpi/sleep (Suspend to memory takes place)
- Press power button (System tries to come back but fails in MPT adapter
			initialization)

With 2.6.19-rc5-git2 + Reloc patches
------------------------------------
- echo 3 > /proc/acpi/sleep (Suspend to memory takes place)
- Press power button (Fan powers on but nothing additional is displayed on
			serial console.)

Will do a bisect and try to isolate the problem.

Pavel, I hope my testing procedure is right?

Thanks
Vivek
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