linux-kernel - [tip:perf/core] x86/mmiotrace: Remove redundant instruction prefix checks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sun, 23 May 2010 09:25:45 GMT
From:	tip-bot for Akinobu Mita <akinobu.mita@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	pq@....fi, akinobu.mita@...il.com, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:perf/core] x86/mmiotrace: Remove redundant instruction prefix checks

Commit-ID:  841bca1393d315d79077f272c2918423e36dc364
Gitweb:     http://git.kernel.org/tip/841bca1393d315d79077f272c2918423e36dc364
Author:     Akinobu Mita <akinobu.mita@...il.com>
AuthorDate: Tue, 18 May 2010 08:48:30 +0900
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 23 May 2010 11:02:43 +0200

x86/mmiotrace: Remove redundant instruction prefix checks

Get rid of the duplicated entries in prefix_codes[]
to eliminate redundant checks by skip_prefix().

Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Acked-by: Pekka Paalanen <pq@....fi>
LKML-Reference: <1274140110-5841-1-git-send-email-akinobu.mita@...il.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/mm/pf_in.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c
index df3d5c8..308e325 100644
--- a/arch/x86/mm/pf_in.c
+++ b/arch/x86/mm/pf_in.c
@@ -34,7 +34,7 @@
 /* IA32 Manual 3, 2-1 */
 static unsigned char prefix_codes[] = {
 	0xF0, 0xF2, 0xF3, 0x2E, 0x36, 0x3E, 0x26, 0x64,
-	0x65, 0x2E, 0x3E, 0x66, 0x67
+	0x65, 0x66, 0x67
 };
 /* IA32 Manual 3, 3-432*/
 static unsigned int reg_rop[] = {
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/