x86: Create clflush() inline, remove hardcoded wbinvd

Create an inline function for clflush(), with the proper arguments,
and use it instead of hard-coding the instruction.

This also removes one instance of hard-coded wbinvd, based on a patch
by Bauder de Oliveira Costa.

[ tglx: arch/x86 adaptation ]

Cc: Andi Kleen <andi@firstfloor.org>
Cc: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c
index d78cd09186..cac0009ceb 100644
--- a/drivers/char/agp/efficeon-agp.c
+++ b/drivers/char/agp/efficeon-agp.c
@@ -221,7 +221,7 @@ static int efficeon_create_gatt_table(struct agp_bridge_data *bridge)
                 SetPageReserved(virt_to_page((char *)page));
 
                 for (offset = 0; offset < PAGE_SIZE; offset += clflush_chunk)
-                        asm volatile("clflush %0" : : "m" (*(char *)(page+offset)));
+                        clflush((char *)page+offset);
 
                 efficeon_private.l1_table[index] = page;
 
@@ -268,15 +268,16 @@ static int efficeon_insert_memory(struct agp_memory * mem, off_t pg_start, int t
                 *page = insert;
 
                 /* clflush is slow, so don't clflush until we have to */
-                if ( last_page &&
-                     ((unsigned long)page^(unsigned long)last_page) & clflush_mask )
-                    asm volatile("clflush %0" : : "m" (*last_page));
+                if (last_page &&
+                    (((unsigned long)page^(unsigned long)last_page) &
+                     clflush_mask))
+                        clflush(last_page);
 
                 last_page = page;
         }
 
         if ( last_page )
-                asm volatile("clflush %0" : : "m" (*last_page));
+                clflush(last_page);
 
         agp_bridge->driver->tlb_flush(mem);
         return 0;