Re: [git pull] "big box" x86 changes, boot protocol

[Ingo Molnar <mingo@elte.hu>]

* Linus Torvalds <torvalds@linux-foundation.org> wrote:

> > We always use the gcc builtin for memcpy() here.
> 
> It's probably hard to write a reasonable x86 memcpy() that wouldn't 
> happen to do the right thing for this case, but I do agee - we should 
> still use memmove() for this, just to make it clear that it does 
> overlapping things.

agreed, i queued up the patch below.

	Ingo

------------->
Subject: bootprotocol: cleanup
From: Ingo Molnar <mingo@elte.hu>
Date: Sat Apr 26 23:14:36 CEST 2008

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/e820_64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-x86.q/arch/x86/kernel/e820_64.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/e820_64.c
+++ linux-x86.q/arch/x86/kernel/e820_64.c
@@ -100,7 +100,7 @@ void __init free_early(unsigned long sta
 	for (j = i + 1; j < MAX_EARLY_RES && early_res[j].end; j++)
 		;
 
-	memcpy(&early_res[i], &early_res[i + 1],
+	memmove(&early_res[i], &early_res[i + 1],
 	       (j - 1 - i) * sizeof(struct early_res));
 
 	early_res[j - 1].end = 0;