Thread (1 message) 1 message, 1 author, 2007-08-15
STALE6939d

[PATCH 14/25][V3] get rid of inline asm for load_cr3

From: Glauber de Oliveira Costa <hidden>
Date: 2007-08-15 12:49:34
Subsystem: the rest · Maintainer: Linus Torvalds

Besides not elegant, it is now even forbidden, since it can
break paravirtualized guests. load_cr3 should call write_cr3()
instead.

Signed-off-by: Glauber de Oliveira Costa <redacted>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 include/asm-x86_64/mmu_context.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/asm-x86_64/mmu_context.h b/include/asm-x86_64/mmu_context.h
index c8cdc1e..9592698 100644
--- a/include/asm-x86_64/mmu_context.h
+++ b/include/asm-x86_64/mmu_context.h
@@ -25,7 +25,7 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 
 static inline void load_cr3(pgd_t *pgd)
 {
-	asm volatile("movq %0,%%cr3" :: "r" (__pa(pgd)) : "memory");
+	write_cr3(__pa(pgd));
 }
 
 static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, 
-- 
1.4.4.2
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