linux-kernel - RE: [PATCH 2/3] RFC4106 AES-GCM Driver Using Intel New Instructions

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Message-ID: <24483BA4C9F69C43A7379639D35543D7C3450A84@irsmsx502.ger.corp.intel.com>
Date:	Thu, 18 Nov 2010 09:38:50 +0000
From:	"Struk, Tadeusz" <tadeusz.struk@...el.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
	"O Mahony, Aidan" <aidan.o.mahony@...el.com>,
	"Paoloni, Gabriele" <gabriele.paoloni@...el.com>,
	"Hoban, Adrian" <adrian.hoban@...el.com>
Subject: RE: [PATCH 2/3] RFC4106 AES-GCM Driver Using Intel New Instructions

Will do.
Tadeusz

-----Original Message-----
From: Herbert Xu [mailto:herbert@...dor.apana.org.au] 
Sent: Thursday, November 18, 2010 9:27 AM
To: Andrew Morton
Cc: Struk, Tadeusz; linux-kernel@...r.kernel.org; linux-crypto@...r.kernel.org; O Mahony, Aidan; Paoloni, Gabriele; Hoban, Adrian
Subject: Re: [PATCH 2/3] RFC4106 AES-GCM Driver Using Intel New Instructions

On Wed, Nov 17, 2010 at 05:23:31PM -0800, Andrew Morton wrote:
> On Thu, 4 Nov 2010 14:04:05 -0500
> Herbert Xu <herbert@...dor.hengli.com.au> wrote:
> 
> > On Thu, Oct 28, 2010 at 04:19:09PM +0100, tadeusz.struk@...el.com wrote:
> > > Hi Herbert,
> > >    We have reworked the assembly to use macros instead of the new aesni instructions.
> > 
> > Both applied.  Thanks for your efforts!
> 
> Whatever's in today's linux-next is a big fail with gas-2.16.1.
> 
> Which was entirely predictable!  How often has this happened recently??
> 
> 
> arch/x86/crypto/aesni-intel_asm.S: Assembler messages:
> arch/x86/crypto/aesni-intel_asm.S:834: Error: no such instruction: `pshufb SHUF_MASK(%rip),%xmm13'
> arch/x86/crypto/aesni-intel_asm.S:866: Error: no such instruction: `pshufb SHUF_MASK(%rip),%xmm5'
> arch/x86/crypto/aesni-intel_asm.S:866: Error: no such instruction: `pshufb SHUF_MASK(%rip),%xmm0'
> arch/x86/crypto/aesni-intel_asm.S:866: Error: bad expression

Sorry, but I no longer have access to a binutils that is older
than 2.18 so I never saw this failure.

Tadeusz, could you please make an incremental patch that converts
all the pshufb instructions to macros?

Thanks!
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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