linux-kernel - Re: [PATCH 04/13] x86, mm: Revert back good

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Message-ID: <CAE9FiQWPNmsw9OMrdP7Q0JnjGv66PBkAcJQhizUm0Kji-yvw8g@mail.gmail.com>
Date:	Thu, 4 Oct 2012 14:46:18 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, Jacob Shin <jacob.shin@....com>,
	Tejun Heo <tj@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 04/13] x86, mm: Revert back good_end setting for 64bit

On Thu, Oct 4, 2012 at 2:41 PM, H. Peter Anvin <hpa@...or.com> wrote:
> On 10/04/2012 02:40 PM, Yinghai Lu wrote:
>> On Thu, Oct 4, 2012 at 2:21 PM, Yinghai Lu <yinghai@...nel.org> wrote:
>>> On Thu, Oct 4, 2012 at 9:45 AM, Konrad Rzeszutek Wilk
>>> <konrad.wilk@...cle.com> wrote:
>>>>> So could use ram under 1M to map that page table at first.
>>>>
>>>> Could or does this patch do it? And why 1MB?
>>>
>>> can you or stefano could test attached patch on xen ?
>>>
>> on top of
>>
>> http://git.kernel.org/?p=linux/kernel/git/tip/tip.git;a=shortlog;h=refs/heads/x86/mm2
>>
>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git  x86/mm2
>>
>
> No, no, not yet another ad hoc hack... please.
>

or let xen map that page table by itself at first?
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