linux-kernel - [PATCH] [18/40] i386: flush lazy mmu updates on kunmap

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Message-Id: <20070430102751.E388C151CA@wotan.suse.de>
Date:	Mon, 30 Apr 2007 12:27:51 +0200 (CEST)
From:	Andi Kleen <ak@...e.de>
To:	jeremy@...p.org, patches@...-64.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [18/40] i386: flush lazy mmu updates on kunmap_atomic


From: Jeremy Fitzhardinge <jeremy@...p.org>
kunmap_atomic should flush any pending lazy mmu updates, mainly to be
consistent with kmap_atomic, and to preserve its normal behaviour.

Signed-off-by: Jeremy Fitzhardinge <jeremy@...source.com>
Signed-off-by: Andi Kleen <ak@...e.de>

---
 arch/i386/mm/highmem.c |    1 +
 1 file changed, 1 insertion(+)

===================================================================
Index: linux/arch/i386/mm/highmem.c
===================================================================
--- linux.orig/arch/i386/mm/highmem.c
+++ linux/arch/i386/mm/highmem.c
@@ -72,6 +72,7 @@ void kunmap_atomic(void *kvaddr, enum km
 #endif
 	}
 
+	arch_flush_lazy_mmu_mode();
 	pagefault_enable();
 }
 
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