linux-kernel - Re: megaraid_sas suspend ok, resume oops

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Date:	Sat, 2 Sep 2006 16:10:01 -0400
From:	Dave Jones <davej@...hat.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Nigel Cunningham <ncunningham@...uxmail.org>,
	Jeff Chua <jeff.chua.linux@...il.com>,
	Jens Axboe <axboe@...nel.dk>, Sreenivas.Bagalkote@...l.com,
	Sumant.Patro@...l.com, jeff@...zik.org,
	lkml <linux-kernel@...r.kernel.org>, Pavel Machek <pavel@....cz>
Subject: Re: megaraid_sas suspend ok, resume oops

On Sat, Sep 02, 2006 at 09:47:05PM +0200, Rafael J. Wysocki wrote:

 > > Precluding NX support + swsusp kinda sucks, but I guess it's a tiny subset of users.
 > 
 > Well, I think the majority of NX-capable CPUs are also x86_64, in which case
 > I'd recommend using a 64-bit kernel anyway.

There's a fairly large number of these "Core Duo" systems out there :)
Hopefully these are the last CPUs lacking longmode that Intel will make.
Asides from these, the only other 32-bit only CPUs with NX are the newer VIA C3s.

For the Fedora users it's not that big a deal not being able to take advantage
of NX, as we fall back to using the old segment limit tricks that exec-shield
does to emulate NX, without having to worry about PAE headaches.

Given the only other use of PAE is >4GB support, and these systems typically
max out at 4GB due to the limited number of memory slots, it's not really that
big a problem.

 > I was afraid the issue would be urgent, but it doesn't seem so now.  I'd like to
 > postpone fixing it until we can create suspend images larger that 350 meg on
 > i386 boxes with highmem (the patch is ready to go to -mm after 2.6.19-rc1 as
 > 2.6.20 material).

Sounds good to me.

		Dave

-- 
http://www.codemonkey.org.uk

-- 
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