This is a note to let you know that I've just added the patch titled
crypto: crc32-pclmul - Use gas macro for pclmulqdq
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-crc32-pclmul-use-gas-macro-for-pclmulqdq.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 57ae1b0532977b30184aaba04b6cafe0a284c21f Mon Sep 17 00:00:00 2001
From: Sandy Wu <[email protected]>
Date: Thu, 28 Mar 2013 17:05:44 -0700
Subject: crypto: crc32-pclmul - Use gas macro for pclmulqdq
From: Sandy Wu <[email protected]>
commit 57ae1b0532977b30184aaba04b6cafe0a284c21f upstream.
Occurs when CONFIG_CRYPTO_CRC32C_INTEL=y and CONFIG_CRYPTO_CRC32C_INTEL=y.
Older versions of bintuils do not support the pclmulqdq instruction. The
PCLMULQDQ gas macro is used instead.
Signed-off-by: Sandy Wu <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/x86/crypto/crc32c-pcl-intel-asm_64.S | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
+++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
@@ -42,6 +42,8 @@
* SOFTWARE.
*/
+#include <asm/inst.h>
+
## ISCSI CRC 32 Implementation with crc32 and pclmulqdq Instruction
.macro LABEL prefix n
@@ -224,10 +226,10 @@ LABEL crc_ %i
movdqa (bufp), %xmm0 # 2 consts: K1:K2
movq crc_init, %xmm1 # CRC for block 1
- pclmulqdq $0x00,%xmm0,%xmm1 # Multiply by K2
+ PCLMULQDQ 0x00,%xmm0,%xmm1 # Multiply by K2
movq crc1, %xmm2 # CRC for block 2
- pclmulqdq $0x10, %xmm0, %xmm2 # Multiply by K1
+ PCLMULQDQ 0x10, %xmm0, %xmm2 # Multiply by K1
pxor %xmm2,%xmm1
movq %xmm1, %rax
Patches currently in stable-queue which might be from [email protected] are
queue-3.8/crypto-crc32-pclmul-use-gas-macro-for-pclmulqdq.patch
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