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[PATCH] UML: add generic BUG support

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The BUG changes in -mm3 need some arch support.  This patch adds the UML
support needed.  For the most part, it was stolen from the underlying
architecture.  The exception is the kernel eip < PAGE_OFFSET test, which is
wrong for skas mode UMLs.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike
2006-12-08 02:36:23 -08:00
committed by Linus Torvalds
parent c31a0bf3e1
commit e182c965b6
6 changed files with 50 additions and 3 deletions
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20
arch/um/sys-i386/bug.c Normal file
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/*
* Copyright (C) 2006 Jeff Dike (jdike@addtoit.com)
* Licensed under the GPL V2
*/
#include <linux/uaccess.h>
/* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because
* that's not relevent in skas mode.
*/
int is_valid_bugaddr(unsigned long eip)
{
unsigned short ud2;
if (probe_kernel_address((unsigned short __user *)eip, ud2))
return 0;
return ud2 == 0x0b0f;
}