[Xen-devel] [PATCH] x86: Fix grant-table build error

[Lin Ming <mlin@xxxxxxxxxxxxx>]

Fixes build error with btrw instruction.

xen-unstable/xen/include/asm/grant_table.h:57: 
Error: Incorrect register `%edx' used with `w' suffix

Signed-off-by: Lin Ming <mlin@xxxxxxxxxxxxx>
---
 xen/include/asm-x86/grant_table.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/xen/include/asm-x86/grant_table.h 
b/xen/include/asm-x86/grant_table.h
index db8bfb4..9b5321b 100644
--- a/xen/include/asm-x86/grant_table.h
+++ b/xen/include/asm-x86/grant_table.h
@@ -54,7 +54,7 @@ static inline void gnttab_clear_flag(unsigned int nr, 
uint16_t *st)
      * Note that this cannot be clear_bit(), as the access must be
      * confined to the specified 2 bytes.
      */
-    asm volatile ("lock btrw %1,%0" : "=m" (*st) : "Ir" (nr), "m" (*st));
+    asm volatile ("lock btr %1,%0" : "=m" (*st) : "Ir" (nr), "m" (*st));
 }
 
 /* Foreign mappings of HHVM-guest pages do not modify the type count. */
-- 
1.7.2.5




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