linux-kernel - Re: [GIT PULL] EFI fix

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Message-ID: <20160523120801.GB2984@codeblueprint.co.uk>
Date:	Mon, 23 May 2016 13:08:01 +0100
From:	Matt Fleming <matt@...eblueprint.co.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...nel.org>, Alex Thorlton <athorlton@....com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Borislav Petkov <bp@...en8.de>,
	Josh Poimboeuf <jpoimboe@...hat.com>
Subject: Re: [GIT PULL] EFI fix

On Mon, 16 May, at 01:05:45PM, Linus Torvalds wrote:
> 
> I think the right fix is to just get rid of that silly conditional
> frame pointer thing, and always use frame pointers in this stub
> function. And then we don't need that (odd) load to get the old stack
> pointer into %rax - we can just use the frame pointer.
> 
> Something like the attached completely untested patch.

Linus, are you going to apply your patch directly or would you prefer
someone to send a pull request which also includes Josh's patch for
arch/x86/entry/thunk_64.S?