There is a misprint in arch/i386/boot/memory.c file that leads
to error in x86_64 compilation:

...
  CC      arch/x86_64/boot/memory.o
arch/i386/boot/memory.c: In function `detect_memory':
arch/i386/boot/memory.c:32: error: can't find a register in class `DREG' while reloading `asm'

The err variable is specified in asm output list like "=dm", not "=m".

This is for 2.6.22-rc1-mm1 tree. Maybe this exists in i386 as well 
and the patch is sent, but...

Signed-off-by: Pavel Emelianov <xemul@openvz.org>

---

diff --git a/arch/i386/boot/memory.c b/arch/i386/boot/memory.c
index 8a82aa9..7ae2d23 100644
--- a/arch/i386/boot/memory.c
+++ b/arch/i386/boot/memory.c
@@ -30,7 +30,7 @@ static int detect_memory_e820(void)
 		size = sizeof(struct e820entry);
 		id = SMAP;
 		asm("int $0x15; setc %0"
-		    : "=dm" (err), "+b" (next), "+d" (id), "+c" (size),
+		    : "=m" (err), "+b" (next), "+d" (id), "+c" (size),
 		      "=m" (*desc)
 		    : "D" (desc), "a" (0xe820));
 
-
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