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From: tip-bot for Chris Wright <chrisw@sous-sol.org>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com,
	rostedt@goodmis.org, chrisw@sous-sol.org, tglx@linutronix.de
Subject: [tip:tracing/core] x86: use native register access for native tlb flushing
Date: Wed, 29 Apr 2009 06:16:26 GMT	[thread overview]
Message-ID: <tip-d7285c6b5c54397fdf112c2fb98ee43193173aa9@git.kernel.org> (raw)
In-Reply-To: <20090423172138.GR3036@sequoia.sous-sol.org>

Commit-ID:  d7285c6b5c54397fdf112c2fb98ee43193173aa9
Gitweb:     http://git.kernel.org/tip/d7285c6b5c54397fdf112c2fb98ee43193173aa9
Author:     Chris Wright <chrisw@sous-sol.org>
AuthorDate: Thu, 23 Apr 2009 10:21:38 -0700
Committer:  Steven Rostedt <rostedt@goodmis.org>
CommitDate: Thu, 23 Apr 2009 23:05:03 -0400

x86: use native register access for native tlb flushing

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);
 }

  parent reply	other threads:[~2009-04-29  6:18 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-20 22:22 [PATCH 0/2] [GIT PULL] tracing: various bug fixes Steven Rostedt
2009-04-20 22:22 ` [PATCH 1/2] tracing: use recursive counter over irq level Steven Rostedt
2009-04-20 22:22 ` [PATCH 2/2] tracing: use nowakeup version of commit for function event trace tests Steven Rostedt
2009-04-20 22:41   ` Frederic Weisbecker
2009-04-20 22:57     ` Steven Rostedt
2009-04-21  8:23 ` [PATCH 0/2] [GIT PULL] tracing: various bug fixes Ingo Molnar
2009-04-21  9:46   ` Ingo Molnar
2009-04-21 13:08     ` Steven Rostedt
2009-04-21 13:55     ` [PATCH][GIT PULL] ring-buffer: only warn on wrap if buffer is bigger than two pages Steven Rostedt
2009-04-21 14:35       ` Ingo Molnar
2009-04-21 14:54         ` Steven Rostedt
2009-04-21 16:22         ` Steven Rostedt
2009-04-21 14:03     ` [tip:tracing/core] " tip-bot for Steven Rostedt
2009-04-22  6:48     ` [PATCH 0/2] [GIT PULL] tracing: various bug fixes Steven Rostedt
2009-04-22 11:47       ` Frederic Weisbecker
2009-04-22 13:49         ` Steven Rostedt
2009-04-22 17:10           ` Frederic Weisbecker
2009-04-22 17:17             ` Jeremy Fitzhardinge
2009-04-22 17:22               ` Steven Rostedt
2009-04-22 21:32                 ` Steven Rostedt
2009-04-23  8:28                   ` Ingo Molnar
2009-04-23  3:35       ` Steven Rostedt
2009-04-23  8:20         ` Ingo Molnar
2009-04-23 13:53           ` Steven Rostedt
2009-04-23 14:39             ` Steven Rostedt
2009-04-23 15:08               ` Steven Rostedt
2009-04-23 15:11                 ` Ingo Molnar
2009-04-23 16:49                 ` Jeremy Fitzhardinge
2009-04-23 17:21                   ` Chris Wright
2009-04-23 18:02                     ` Chris Wright
2009-04-23 18:33                       ` Steven Rostedt
2009-04-23 18:43                         ` Chris Wright
2009-04-24  8:36                           ` Ingo Molnar
2009-04-24 15:12                             ` Chris Wright
2009-04-29  6:16                     ` tip-bot for Chris Wright [this message]
2009-04-23 17:52                   ` Steven Rostedt
2009-04-24  8:34             ` Ingo Molnar

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