Date: Wed, 9 Sep 2009 14:46:46 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Cc: Vincent Hoffman <vince@unsane.co.uk> Subject: Re: general protection fault on boot. Message-ID: <200909091446.47077.jhb@freebsd.org> In-Reply-To: <200909091339.00193.jhb@freebsd.org> References: <4AA7D8B3.1010203@unsane.co.uk> <200909091339.00193.jhb@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday 09 September 2009 1:38:59 pm John Baldwin wrote: > On Wednesday 09 September 2009 12:32:51 pm Vincent Hoffman wrote: > > Hi all, > > I've been running the 8.0-BETAs in a xen virtual machine > > (hvm/fully virtualised) for testing and something between r196730 and > > r196746 causes a general protection fault on boot. I'll try and narrow > > it down if i get a chance but I'm a a bit busy at the moment. > > > > backtrace is available at > > http://unsane.co.uk/~jhary/freebsd/GPF-09-09-09.gif > > Xen dom0 is a centos5.3 box using the xen-3.3.1 rpms from > > http://www.gitco.de/linux/i386/centos/5/rpms/ if thats of any use. > > > > Let me know if I need to provide any more info. > > Hmm, can you try reverting 196737? Or actually, can you print out the value > of %ebx ('p $ebx' in ddb will work I think)? I wonder if this patch would > fix it: > > Index: pmap.c > =================================================================== > --- pmap.c (revision 196974) > +++ pmap.c (working copy) > @@ -999,7 +999,7 @@ > * coherence domain. > */ > mfence(); > - for (; sva < eva; sva += cpu_clflush_line_size) > + for (; sva <= eva; sva += cpu_clflush_line_size) > clflush(sva); > mfence(); > } else { This patch is probably bogus. I am curious what %ebx is however. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200909091446.47077.jhb>