linux-kernel - 896MB address limit (was: Re: [PATCH 04/13] x86, mm: Revert back good

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Message-ID: <87obkgpoi1.fsf_-_@xmission.com>
Date:	Fri, 05 Oct 2012 15:01:26 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Jacob Shin <jacob.shin@....com>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Tejun Heo <tj@...nel.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	kexec@...ts.infradead.org, Cliff Wickman <cpw@....com>
Subject: 896MB address limit (was: Re: [PATCH 04/13] x86, mm: Revert back good_end setting for 64bit)


I am going to see about merging these two threads.

Yinghai Lu <yinghai@...nel.org> writes:

> On Fri, Oct 5, 2012 at 2:41 PM, Eric W. Biederman <ebiederm@...ssion.com> wrote:
>> Yinghai Lu <yinghai@...nel.org> writes:
>>
>>> with bzImage or vmlinux?
>>
>> bzImage I presume.  Certainly the bzImage has lost it's 896M limit,
>> which is where ultimiately the 896M limite came from.
>
> they are using updated kexec-tools ?
>
> last time when i checked the code for kexec-tools
> found the 896M problem was from kexec-tools bzimage support.

Cliff Wickman was the guy at sgi running the tests.

To the best of my knowledge he was runing an up to date kexec-tools and
was loading a bzImage.  Of course his initial reaction was where did the
896M limit come from, as he had just updated to a kernel with the limit
a few weeks ago.

YH please talk to Cliff directly.

Eric

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