linux-kernel - [tip:x86/fpu] x86/crypto, x86/fpu: Remove X86_FEATURE_EAGER

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

Message-ID: <tip-02f39b2379fb81557ae864ec8f85421c0250c954@git.kernel.org>
Date:   Fri, 7 Oct 2016 02:43:07 -0700
From:   tip-bot for Andy Lutomirski <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     fenghua.yu@...el.com, jpoimboe@...hat.com, dvlasenk@...hat.com,
        brgerst@...il.com, dave.hansen@...ux.intel.com,
        peterz@...radead.org, riel@...hat.com, mingo@...nel.org,
        hpa@...or.com, tglx@...utronix.de, quentin.casasnovas@...cle.com,
        oleg@...hat.com, linux-kernel@...r.kernel.org, luto@...nel.org,
        bp@...en8.de, torvalds@...ux-foundation.org
Subject: [tip:x86/fpu] x86/crypto, x86/fpu: Remove X86_FEATURE_EAGER_FPU
 #ifdef from the crc32c code

Commit-ID:  02f39b2379fb81557ae864ec8f85421c0250c954
Gitweb:     http://git.kernel.org/tip/02f39b2379fb81557ae864ec8f85421c0250c954
Author:     Andy Lutomirski <luto@...nel.org>
AuthorDate: Tue, 4 Oct 2016 20:34:30 -0400
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 7 Oct 2016 11:14:06 +0200

x86/crypto, x86/fpu: Remove X86_FEATURE_EAGER_FPU #ifdef from the crc32c code

The crypto code was checking both use_eager_fpu() and
defined(X86_FEATURE_EAGER_FPU).  The latter was nonsensical, so
remove it.  This will avoid breakage when we remove
X86_FEATURE_EAGER_FPU.

Signed-off-by: Andy Lutomirski <luto@...nel.org>
Signed-off-by: Rik van Riel <riel@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Oleg Nesterov <oleg@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@...cle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: pbonzini@...hat.com
Link: http://lkml.kernel.org/r/1475627678-20788-2-git-send-email-riel@redhat.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/crypto/crc32c-intel_glue.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/x86/crypto/crc32c-intel_glue.c b/arch/x86/crypto/crc32c-intel_glue.c
index 0857b1a..715399b 100644
--- a/arch/x86/crypto/crc32c-intel_glue.c
+++ b/arch/x86/crypto/crc32c-intel_glue.c
@@ -58,16 +58,11 @@
 asmlinkage unsigned int crc_pcl(const u8 *buffer, int len,
 				unsigned int crc_init);
 static int crc32c_pcl_breakeven = CRC32C_PCL_BREAKEVEN_EAGERFPU;
-#if defined(X86_FEATURE_EAGER_FPU)
 #define set_pcl_breakeven_point()					\
 do {									\
 	if (!use_eager_fpu())						\
 		crc32c_pcl_breakeven = CRC32C_PCL_BREAKEVEN_NOEAGERFPU;	\
 } while (0)
-#else
-#define set_pcl_breakeven_point()					\
-	(crc32c_pcl_breakeven = CRC32C_PCL_BREAKEVEN_NOEAGERFPU)
-#endif
 #endif /* CONFIG_X86_64 */
 
 static u32 crc32c_intel_le_hw_byte(u32 crc, unsigned char const *data, size_t length)