Date: Fri, 25 Sep 2009 12:38:23 -0500 From: Alan Cox <alc@cs.rice.edu> To: John Baldwin <jhb@freebsd.org> Cc: Attilio Rao <attilio@freebsd.org>, freebsd-stable@freebsd.org, alc@freebsd.org Subject: Re: 8.0-RC1 panic attaching ppc Message-ID: <4ABD000F.5080007@cs.rice.edu> In-Reply-To: <200909250957.06252.jhb@freebsd.org> References: <200909232322.51060.doconnor@gsoft.com.au> <200909240920.05027.jhb@freebsd.org> <200909251650.16283.doconnor@gsoft.com.au> <200909250957.06252.jhb@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
John Baldwin wrote: > On Friday 25 September 2009 3:20:05 am Daniel O'Connor wrote: > >> On Thu, 24 Sep 2009, John Baldwin wrote: >> >>> Can you try this patch perhaps: >>> >>> Index: sys/amd64/isa/isa_dma.c >>> =================================================================== >>> --- isa_dma.c (revision 197430) >>> +++ isa_dma.c (working copy) >>> >> This patch fixes the panic for me. >> >> I haven't tried printing (don't have any device handy here). >> > > I wonder if pmap_extract(kernel_pmap) doesn't work with direct map addresses > for some reason? I kind of find that hard to believe actually. Alan, the > original panic was in pmap_extract(kernel_pmap, ...) calls in the isa_dma > code. My patch that "fixes" the panic just changes them to pmap_kextract(). > > Is this problem occurring on an AMD processor? Alan
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4ABD000F.5080007>