linux-kernel - Re: Linux 3.9-rc1

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Date:	Wed, 06 Mar 2013 01:17:04 -0800
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	Henrik Rydberg <rydberg@...omail.se>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Yinghai Lu <yinghai@...nel.org>
Subject: Re: Linux 3.9-rc1

On 03/06/2013 12:06 AM, Henrik Rydberg wrote:
> Hi Linus, Peter,
> 
>> I don't know if it's just me, but this merge window had more "Uhhuh"
>> moments than I'm used to. I stopped merging a couple of times, because
>> we had bugs that looked really scary, but thankfully each time people
>> were on them like paparazzi on Justin Bieber. Special thanks to Peter,
>> Ted and Rafael (and the people who reported the bugs too!) for being
>> so responsive. It could have been so much worse.
> 
> 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
>     
>     Get pgt_buf early from BRK, and use it to map PMD_SIZE from top at first.
>     Then use mapped pages to map more ranges below, and keep looping until
>     all pages get mapped.
> 
> 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.
> 

Adding Yinghai.

Can you get a boot log with "debug memblock=debug" from the last
successful commit point?  Are you booting EFI or BootCamp?

	-hpa


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