Re: 2.6.22-rc2-mm1

[William Lee Irwin III <wli@holomorphy.com>]

On Wed, May 23, 2007 at 12:42:33AM -0700, Andrew Morton wrote:
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc2/2.6.22-rc2-mm1/
> - A new readahead patch series.  This needs serious review and performance
>   testing please.
> - Added Ingo's CFS CPU scheduler
> - Xen dom-U support is now in the x86 tree.

The build fails with the following error when CONFIG_X86_MCE is not set:
arch/x86_64/kernel/built-in.o: In function `do_notify_resume':
/mnt/g/mm-2.6.22-rc2/arch/x86_64/kernel/signal.c:478: undefined reference to `mce_notify_user'
The following patch #ifdef's the offending call as a minimal fix.

Signed-off-by: William Irwin <bill.irwin@oracle.com>

Index: mm-2.6.22-rc2/arch/x86_64/kernel/signal.c
===================================================================
--- mm-2.6.22-rc2.orig/arch/x86_64/kernel/signal.c	2007-05-23 07:41:49.741705813 -0700
+++ mm-2.6.22-rc2/arch/x86_64/kernel/signal.c	2007-05-23 07:44:35.339142673 -0700
@@ -473,9 +473,11 @@
 		clear_thread_flag(TIF_SINGLESTEP);
 	}
 
+#ifdef CONFIG_X86_MCE
 	/* notify userspace of pending MCEs */
 	if (thread_info_flags & _TIF_MCE_NOTIFY)
 		mce_notify_user();
+#endif /* CONFIG_X86_MCE */
 
 	/* deal with pending signal delivery */
 	if (thread_info_flags & (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK))
-
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