linux-kernel - [PATCH -rt] ARM TLB flush fix: don't forget to re-enable preemption

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Message-Id: <20070522230128.891568116@mvista.com>
Date:	Tue, 22 May 2007 16:01:28 -0700
From:	Kevin Hilman <khilman@...sta.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH -rt] ARM TLB flush fix: don't forget to re-enable preemption

Add a preempt_enable() to flush_tlb_kernel_page() since -rt4 patch
adds a preempt_disable but no preempt_enable().

Signed-off-by: Kevin Hilman <khilman@...sta.com>


---
 include/asm-arm/tlbflush.h |    1 +
 1 file changed, 1 insertion(+)

Index: linux-2.6.21/include/asm-arm/tlbflush.h
===================================================================
--- linux-2.6.21.orig/include/asm-arm/tlbflush.h
+++ linux-2.6.21/include/asm-arm/tlbflush.h
@@ -378,6 +378,7 @@ static inline void local_flush_tlb_kerne
 		asm("mcr p15, 0, %0, c8, c6, 1" : : "r" (kaddr) : "cc");
 	if (tlb_flag(TLB_V6_I_PAGE))
 		asm("mcr p15, 0, %0, c8, c5, 1" : : "r" (kaddr) : "cc");
+	preempt_enable();
 
 	if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL |
 		     TLB_V6_I_PAGE | TLB_V6_D_PAGE |
--
-
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