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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Chris Wright <chrisw@sous-sol.org>
Subject: [PATCH 4/6] x86: use native register access for native tlb flushing
Date: Fri, 24 Apr 2009 00:30:09 -0400	[thread overview]
Message-ID: <20090424043113.953250145@goodmis.org> (raw)
In-Reply-To: 20090424043005.338878133@goodmis.org

[-- Attachment #1: 0004-x86-use-native-register-access-for-native-tlb-flush.patch --]
[-- Type: text/plain, Size: 1285 bytes --]

From: Chris Wright <chrisw@sous-sol.org>

currently these are paravirtulaized, doesn't appear any callers rely on
this (no pv_ops backends are using native_tlb and overriding cr3/4
access).

[ Impact: fix lockdep warning with paravirt and function tracer ]

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
LKML-Reference: <20090423172138.GR3036@sequoia.sous-sol.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 arch/x86/include/asm/tlbflush.h |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index d3539f9..e2927c5 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -17,7 +17,7 @@
 
 static inline void __native_flush_tlb(void)
 {
-	write_cr3(read_cr3());
+	native_write_cr3(native_read_cr3());
 }
 
 static inline void __native_flush_tlb_global(void)
@@ -32,11 +32,11 @@ static inline void __native_flush_tlb_global(void)
 	 */
 	raw_local_irq_save(flags);
 
-	cr4 = read_cr4();
+	cr4 = native_read_cr4();
 	/* clear PGE */
-	write_cr4(cr4 & ~X86_CR4_PGE);
+	native_write_cr4(cr4 & ~X86_CR4_PGE);
 	/* write old PGE again and flush TLBs */
-	write_cr4(cr4);
+	native_write_cr4(cr4);
 
 	raw_local_irq_restore(flags);
 }
-- 
1.6.2.1

-- 

  parent reply	other threads:[~2009-04-24  4:32 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-24  4:30 [PATCH 0/6] [GIT PULL] x86,ring_buffer,tracing: updates for tip Steven Rostedt
2009-04-24  4:30 ` [PATCH 1/6] tracing/wakeup: move access to wakeup_cpu into spinlock Steven Rostedt
2009-04-24  4:30 ` [PATCH 2/6] tracing: increase size of number of possible events Steven Rostedt
2009-04-24  6:02   ` Li Zefan
2009-04-24  7:09     ` Ingo Molnar
2009-04-24 12:29       ` Steven Rostedt
2009-04-24 12:27     ` Steven Rostedt
2009-04-24 14:04     ` Steven Rostedt
2009-04-24 14:05       ` Steven Rostedt
2009-04-26  6:53         ` Li Zefan
2009-04-26 13:44           ` Steven Rostedt
2009-05-04  9:05             ` Li Zefan
2009-05-04 14:12               ` Steven Rostedt
2009-05-05  1:32                 ` Li Zefan
2009-05-07  9:19               ` [tip:tracing/core] tracing: reset ring buffer when removing modules with events tip-bot for Steven Rostedt
2009-04-24  7:12   ` [PATCH 2/6] tracing: increase size of number of possible events Ingo Molnar
2009-04-24 12:30     ` Steven Rostedt
2009-04-24  4:30 ` [PATCH 3/6] tracing: add size checks for exported ftrace internal structures Steven Rostedt
2009-04-24  4:30 ` Steven Rostedt [this message]
2009-04-24  4:30 ` [PATCH 5/6] tracing: fix cut and paste macro error Steven Rostedt
2009-04-24  4:30 ` [PATCH 6/6] ring_buffer: compressed event header Steven Rostedt

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