linux-kernel - Re: [PATCH v2] x86, boot: Allow 64bit EFI kernel to be loaded above 4G

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Message-ID: <CAE9FiQW8qRw76Q9R0YqmXVPC_scNNYc440_XoDVrLNRc+OxOhQ@mail.gmail.com>
Date:	Tue, 24 Feb 2015 16:31:27 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Matt Fleming <matt@...eblueprint.co.uk>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	Jonathan Corbet <corbet@....net>,
	Matt Fleming <matt.fleming@...el.com>,
	Kees Cook <keescook@...omium.org>,
	Junjie Mao <eternal.n08@...il.com>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] x86, boot: Allow 64bit EFI kernel to be loaded above 4G

On Tue, Feb 24, 2015 at 1:55 PM, Matt Fleming <matt@...eblueprint.co.uk> wrote:
> On Sun, 22 Feb, at 07:43:48PM, Yinghai Lu wrote:
>> +Field name:  ext_code32_start
>> +Type:                modify (optional, reloc)
>> +Offset/size: 0x268/4
>> +Protocol:    2.14+
>> +
>> +  This field is the upper 32bits of load address when EFI 64bit kernel
>> +  is loaded above 4G. And it is used with code32_start to compare to
>> +  pref_address to decide if kernel need to be relocated further.
>
> I think we can delete the second sentence.
>
> But these are minimal changes and I'm happy to fix them up when applying
> this patch if that's OK?

Sure. Please go ahead.

Thanks

Yinghai
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