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Date: Wed, 8 Jun 2011 22:36:03 +0100
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: "H. Peter Anvin" <hpa@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Yinghai Lu <yinghai@kernel.org>, Jim Bos <jim876@xs4all.nl>,
        Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
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        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Greg KH <gregkh@suse.de>, Andrew Morton <akpm@linux-foundation.org>
Subject: Re: 2.6.39.1 immediately reboots/resets on EFI system
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On Wed, Jun 08, 2011 at 02:31:38PM -0700, H. Peter Anvin wrote:
> On 06/08/2011 02:28 PM, Matthew Garrett wrote:
> > 
> > E820 limits us to 128 ranges, and systems I'm looking at right now are 
> > already using over 140 boot services regions. Some of them are 
> > contiguous and we could just merge them for e820, but that leaves us at 
> > the whim of whoever wrote the allocator for the firmware. And do you 
> > want to bet on them having done this sanely?
> > 
> 
> No, we're not limited to 128.  We're limited to 128 in the boot
> structure, but more can be passed via the linked list.

Oh, ok, that's not as bad as I thought. We're still potentially losing a 
pile of memory, but...

-- 
Matthew Garrett | mjg59@srcf.ucam.org
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