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Date: Fri, 15 Apr 2016 12:14:22 -0700
From: Kees Cook <>
To: Ingo Molnar <>
Cc: Yinghai Lu <>, Baoquan He <>, 
	Ard Biesheuvel <>, Matt Redfearn <>, 
	"" <>, "H. Peter Anvin" <>, Ingo Molnar <>, 
	Borislav Petkov <>, Vivek Goyal <>, Andy Lutomirski <>,, Andrew Morton <>, 
	Dave Young <>, 
	"" <>, LKML <>
Subject: Re: [PATCH v5 05/21] x86, boot: Calculate decompression size during
 boot not build

On Fri, Apr 15, 2016 at 1:12 AM, Ingo Molnar <> wrote:
> * Kees Cook <> wrote:
>> From: Yinghai Lu <>
>> Currently z_extract_offset is calculated in boot/compressed/mkpiggy.c.
> What is the high level meaning of z_extract_offset? I cannot tell without reading
> the code - and the point of changelogs is for them to be readable without having
> to read the code.

I'll clarify it in the changelog. (FWIW, it's the offset into the
extraction buffer where it's safe to put the data-to-be-extracted).

> The rest of the changelog is pretty good.



Kees Cook
Chrome OS & Brillo Security

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