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From: tip-bot for Dave Hansen <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: dave.hansen@linux.intel.com, hpa@zytor.com,
	kirill.shutemov@linux.intel.com, tglx@linutronix.de,
	dave@sr71.net, torvalds@linux-foundation.org, bp@suse.de,
	linux-kernel@vger.kernel.org, mingo@kernel.org, luto@kernel.org,
	peterz@infradead.org
Subject: [tip:mm/pkeys] x86/mm/pkeys: Fix mismerge of protection keys CPUID bits
Date: Sat, 12 Mar 2016 07:15:59 -0800	[thread overview]
Message-ID: <tip-0d47638f80a02b15869f1fe1fc09e5bf996750fd@git.kernel.org> (raw)
In-Reply-To: <20160310221213.06F9DB53@viggo.jf.intel.com>

Commit-ID:  0d47638f80a02b15869f1fe1fc09e5bf996750fd
Gitweb:     http://git.kernel.org/tip/0d47638f80a02b15869f1fe1fc09e5bf996750fd
Author:     Dave Hansen <dave.hansen@linux.intel.com>
AuthorDate: Thu, 10 Mar 2016 14:12:13 -0800
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 11 Mar 2016 09:55:57 +0100

x86/mm/pkeys: Fix mismerge of protection keys CPUID bits

Kirill Shutemov pointed this out to me.

The tip tree currently has commit:

	dfb4a70f2 [x86/cpufeature, x86/mm/pkeys: Add protection keys related CPUID definitions]

whioch added support for two new CPUID bits: X86_FEATURE_PKU and
X86_FEATURE_OSPKE.  But, those bits were mis-merged and put in
cpufeature.h instead of cpufeatures.h.

This didn't cause any breakage *except* it keeps the "ospke" and
"pku" bits from showing up in cpuinfo.

Now cpuinfo has the two new flags:

	flags	: ...  pku ospke

BTW, is it really wise to have cpufeature.h and cpufeatures.h?
It seems like they can only cause confusion and mahem with tab
completion.

Reported-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave@sr71.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160310221213.06F9DB53@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/include/asm/cpufeature.h  | 4 ----
 arch/x86/include/asm/cpufeatures.h | 4 ++++
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 50e292a..3636ec0 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -94,10 +94,6 @@ extern const char * const x86_bug_flags[NBUGINTS*32];
 	(__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : 	\
 	 x86_this_cpu_test_bit(bit, (unsigned long *)&cpu_info.x86_capability))
 
-/* Intel-defined CPU features, CPUID level 0x00000007:0 (ecx), word 16 */
-#define X86_FEATURE_PKU		(16*32+ 3) /* Protection Keys for Userspace */
-#define X86_FEATURE_OSPKE	(16*32+ 4) /* OS Protection Keys Enable */
-
 /*
  * This macro is for detection of features which need kernel
  * infrastructure to be used.  It may *not* directly test the CPU
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index cbb2c56..89949a2 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -270,6 +270,10 @@
 #define X86_FEATURE_PFTHRESHOLD (15*32+12) /* pause filter threshold */
 #define X86_FEATURE_AVIC	(15*32+13) /* Virtual Interrupt Controller */
 
+/* Intel-defined CPU features, CPUID level 0x00000007:0 (ecx), word 16 */
+#define X86_FEATURE_PKU		(16*32+ 3) /* Protection Keys for Userspace */
+#define X86_FEATURE_OSPKE	(16*32+ 4) /* OS Protection Keys Enable */
+
 /*
  * BUG word(s)
  */

      reply	other threads:[~2016-03-12 15:16 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-10 22:12 [PATCH] x86, pkeys: fix " Dave Hansen
2016-03-12 15:15 ` tip-bot for Dave Hansen [this message]

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