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Date: Tue, 28 Nov 2017 10:04:42 -0800
From: Linus Torvalds <>
To: Joe Perches <>
Cc: "Eric W. Biederman" <>, "Tobin C. Harding" <>, 
	"Jason A. Donenfeld" <>, "Theodore Ts'o" <>, Kees Cook <>, 
	Paolo Bonzini <>, Tycho Andersen <>, 
	"Roberts, William C" <>, Tejun Heo <>, 
	Jordan Glover <>, Greg KH <>, 
	Petr Mladek <>, Ian Campbell <>, 
	Sergey Senozhatsky <>, Catalin Marinas <>, 
	Will Deacon <>, Steven Rostedt <>, 
	Chris Fries <>, Dave Weinstein <>, 
	Daniel Micay <>, Djalal Harouni <>, 
	Radim Krčmář <>, 
	Linux Kernel Mailing List <>, KVM list <>, 
	"" <>
Subject: Re: [PATCH 0/5] add printk specifier %px, unique identifier

On Tue, Nov 28, 2017 at 9:41 AM, Joe Perches <> wrote:
> Perhaps if there are really tools that parse this
> the [<leading-0-width>] should be kept the same too.

If we really get failures, we can do that.

But since the width is already different on 32-bit and 64-bit, I
seriously doubt there are any tools that would care about the width.
They'd already be horribly broken.

So let's not waste space with pointless zeroes unless somebody finds a
case where it matters.


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