linux-kernel - Re: [tip:x86/build] x86, boot: Fix word-size assumptions in has

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Date:	Thu, 30 Jan 2014 10:28:16 +0000
From:	"Woodhouse, David" <david.woodhouse@...el.com>
To:	Ingo Molnar <mingo@...nel.org>
CC:	"hpa@...or.com" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"keescook@...omium.org" <keescook@...omium.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"hpa@...ux.intel.com" <hpa@...ux.intel.com>,
	"linux-tip-commits@...r.kernel.org" 
	<linux-tip-commits@...r.kernel.org>
Subject: Re: [tip:x86/build] x86, boot: Fix word-size assumptions in
 has_eflag () inline asm

On Thu, 2014-01-30 at 10:09 +0100, Ingo Molnar wrote:
> 
> This broke the build though:
> 
> arch/x86/boot/compressed/../cpuflags.c: Assembler messages:
> arch/x86/boot/compressed/../cpuflags.c:35: Error: invalid instruction
> suffix for `pushf'

Ah, that only happens with CONFIG_RANDOMIZE_BASE, so I missed the fact
that 64-bit code was using the *same* inline asm. Sorry.

That 'pushfl' really does want to be 'pushfq' for the 64-bit version.
I'll look at how best to make it do the right thing...

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@...el.com                              Intel Corporation

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