linux-kernel - Re: [PATCH v5 03/13] x86, 64bit: Set extra ident mapping for whole kernel range

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Message-ID: <20121221234046.GB2000@phenom.dumpdata.com>
Date:	Fri, 21 Dec 2012 18:40:46 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 03/13] x86, 64bit: Set extra ident mapping for whole
 kernel range

On Fri, Dec 21, 2012 at 02:35:25PM -0800, Yinghai Lu wrote:
> On Fri, Dec 21, 2012 at 2:28 PM, Konrad Rzeszutek Wilk
> <konrad.wilk@...cle.com> wrote:
> > Perhaps 'spare_directory' ? Or 'spare_table' ?
> 
> we have evolved -v7 and -v8 that is using FANCY/FUNNY patch of #PF
> handler set page table from HPA.
> 

Ah, that is what I get from just now plowing through my mailbox.

I did check:
ommit 103d8b76616c23ccee978d00d87d55f201d2be71
Author: Yinghai Lu <yinghai@...nel.org>
Date:   Thu Dec 20 16:19:23 2012 -0800

    x86: Merge early kernel reserve for 32bit and 64bit

which booted fine under dom0 and domU (5GB).

> Please do check if -v7 and -v8 break xen again. (it should not !, but
> i only test dom0 once)
> 
> stop #PF handler after init_mem_mapping
> git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git
> for-x86-boot-v7
> 
> stop #PF handler in x86_64_start_kernel, to keep kgdb working.
> git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git
> for-x86-boot-v8

Ok, perhaps I will do that after the holidays.
> 
> Thanks
> 
> Yinghai
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