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From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Haren Myneni <hbabu@us.ibm.com>,
	Simon Horman <horms@verge.net.au>,
	kexec@lists.infradead.org,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Vivek Goyal <vgoyal@redhat.com>
Subject: Re: [PATCH v3 4/4] kexec, x86_64: Load bzImage64 above 4G
Date: Wed, 21 Nov 2012 15:34:22 -0800	[thread overview]
Message-ID: <50AD64FE.5080701@zytor.com> (raw)
In-Reply-To: <CAE9FiQWjWC59Vha8hfuSC6tRYgQ42ooA37UuOg4SP3_1Fzc5Tw@mail.gmail.com>

On 11/21/2012 12:47 PM, Yinghai Lu wrote:
>>>>
>>>> We should fix that limitation instead.
>>>
>>> sure, but that will make arch/x86/boot/compressed/head_64.S not need
>>> complicated.
>
> If that add cover cross GB boundary handling in head_64.S, may need
> another 100 line code
> for checking and etc.
>

That seems unlikely.

> Also will need another two spare pages for cross 512G boundary.

Doesn't seem like a problem.

Let me be blunt: either we do it right or we don't do it at all.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


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  parent reply	other threads:[~2012-11-21 23:34 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-21  7:31 [PATCH v3 0/4] kexec: put bzImage and ramdisk above 4G for x86 64bit Yinghai Lu
2012-11-21  7:31 ` [PATCH v3 1/4] kexec, x86: add boot header member for version 2.12 Yinghai Lu
2012-11-21  7:31 ` [PATCH v3 2/4] kexec, x86: put ramdisk high for 64bit bzImage Yinghai Lu
2012-11-21  7:31 ` [PATCH v3 3/4] kexec, x86: set ext_cmd_line_ptr when boot_param is above 4g Yinghai Lu
2012-11-21  7:31 ` [PATCH v3 4/4] kexec, x86_64: Load bzImage64 above 4G Yinghai Lu
2012-11-21 14:37   ` Vivek Goyal
2012-11-21 17:24     ` H. Peter Anvin
2012-11-21 19:54     ` Yinghai Lu
2012-11-21 19:56       ` H. Peter Anvin
2012-11-21 20:01         ` Yinghai Lu
2012-11-21 20:16           ` H. Peter Anvin
2012-11-21 20:47             ` Yinghai Lu
2012-11-21 20:56               ` H. Peter Anvin
2012-11-21 23:34               ` H. Peter Anvin [this message]
2012-11-22  5:52                 ` Yinghai Lu
2012-11-21 14:50   ` Vivek Goyal
2012-11-21 19:50     ` Yinghai Lu
2012-11-21 19:52       ` H. Peter Anvin
2012-11-21 19:57         ` Yinghai Lu
2012-11-21 20:00       ` Vivek Goyal
2012-11-21 20:09         ` Yinghai Lu
2012-11-21 20:12           ` Vivek Goyal
2012-11-21 20:17             ` Yinghai Lu
2012-11-21 20:07       ` Vivek Goyal
2012-11-22 11:39         ` Eric W. Biederman

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