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Date: Wed, 8 Jun 2011 20:38:33 +0100
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Jim Bos <jim876@xs4all.nl>, "H. Peter Anvin" <hpa@linux.intel.com>,
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        Greg KH <gregkh@suse.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        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 12:35:54PM -0700, Yinghai Lu wrote:
> On 06/08/2011 12:29 PM, Matthew Garrett wrote:
> >> what former? you can not fix some corner case by breaking most other cases.
> > 
> > All Dell laptops, all new Apples, some Lenovos, various Intel server 
> > platforms. That I've found so far.
> 
> do you mean before that patch, all those machine will not boot linux kernel with UEFI support?

Correct.

> > And we need to be able to map the boot services code, so we can't put 
> > the kernel on top of it.
> 
> after bootloader, those area should be free already.

That's what the spec says. Reality says differently. We need those 
ranges to be available to the kernel until after SetVirtualAddressMap() 
has been called, which means we need to avoid putting the kernel on top 
of them.

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