Re: Today's -current no longer boots on my amd64 machine

[Jean-Yves Migeon <jeanyves.migeon%free.fr@localhost>]

On 04/19/10 07:38, Dennis Ferguson wrote:
> Hello,
>
> I've been building and booting a new GENERIC -current
> kernel every few days for several months now without
> difficulty, but something about today's kernel really
> disagrees with my amd64 machine.  boot loads the kernel,
> the kernel prints a couple of lines and then, after it
> prints four or five words in the line which starts with
>
>     cpu0 at mainbus0 ...
>
> the machine immediately reboots without stopping at
> ddb.  Last Friday's kernel works fine.
>
> I haven't investigated this further yet, but thought
> I'd mention it in case anyone else has problems.  It
> may be coincidence but some of the changes that came
> with this morning's cvs update seem to be to code which
> might be running around the time that line is printed.
>
> The machine has two dual-core Xeon processors, on the
> off chance that matters.

This is probably related to my recent change. Could you try with the 
following patch?

Index: sys/arch/x86/x86/identcpu.c
===================================================================
RCS file: /cvsroot/src/sys/arch/x86/x86/identcpu.c,v
retrieving revision 1.20
diff -u -u -r1.20 identcpu.c
--- sys/arch/x86/x86/identcpu.c 18 Apr 2010 23:47:51 -0000      1.20
+++ sys/arch/x86/x86/identcpu.c 19 Apr 2010 06:53:49 -0000
@@ -671,7 +671,7 @@
                }
 #ifndef XEN
                /* Early patch of text segment. */
-               x86_patch(true);
+               /* x86_patch(true); */
 #endif
        } else {
                /*

--
Jean-Yves Migeon
jeanyves.migeon%free.fr@localhost