linux-kernel - Re: Linux 3.9-rc1

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Message-ID: <20130306210741.GA366@polaris.bitmath.org>
Date:	Wed, 6 Mar 2013 22:07:41 +0100
From:	"Henrik Rydberg" <rydberg@...omail.se>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Yinghai Lu <yinghai@...nel.org>
Subject: Re: Linux 3.9-rc1

On Wed, Mar 06, 2013 at 08:08:34AM -0800, Linus Torvalds wrote:
> On Wed, Mar 6, 2013 at 12:06 AM, Henrik Rydberg <rydberg@...omail.se> wrote:
> >
> > Or not. ;-) This commit breaks boot on my MacBookAir3,1:
> >
> > commit 8d57470d8f859635deffe3919d7d4867b488b85a
> > Author: Yinghai Lu <yinghai@...nel.org>
> > Date:   Fri Nov 16 19:38:58 2012 -0800
> >
> >     x86, mm: setup page table in top-down
> 
> Argh. The whole page table setup crud is scarily fragile.
> 
> > Being a 64-bit apple-EFI machine, it probably runs through an obscure
> > path in this patch. I wish I had more vital information, but I get the
> > white screen of death, so not much to go on so far.
> 
> I actually test on my MBA (also EFI boot), but it's a slightly newer
> 4,1 version, and the memory map looks very different (I've got 251
> memory regions reported by efi, ugh).
> 
> So Apple EFI does work at least in some cases, just not yours. Let's
> hope Yinghai can figure this one out..

And so he did, thanks! FWIW, I also hit the ACPI problem. I have not
seen it often enough to register anything.

Cheers,
Henrik
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