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

Yinghai Lu <yinghai@kernel.org> wrote:

>On Sat, Dec 22, 2012 at 5:24 AM, Konrad Rzeszutek Wilk
><konrad.wilk@oracle.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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