linux-kernel - Re: [PATCH v7 00/27] x86, boot, 64bit: Add support for loading ramdisk and bzImage above 4G

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Date:	Sun, 23 Dec 2012 06:33:38 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 00/27] x86, boot, 64bit: Add support for loading ramdisk and bzImage above 4G

Explanation please?

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

>On Sat, Dec 22, 2012 at 5:24 AM, Konrad Rzeszutek Wilk
><konrad.wilk@...cle.com> wrote:
>>
>> Interestingly enough I only see this on any AMD machine - different
>> motherboards, different memory configurations.
>>
>> And also in a HVM guest running on an AMD machine. If it runs on
>Intel
>> it works just fine.
>
>Found the reason,
>
>-v11: change far jmp back to far return to initial_code, that is needed
>     to fix failure that is reported by Konard on AMD system.
>
>works well on on AMD 4 sockets that I found.
>
>update the for-x86-boot branch, please check that.
>git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git
>for-x86-boot
>
>Thanks a lot for the testing on AMD system.
>
>Yinghai

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