Date: Thu, 6 Mar 2008 08:31:26 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: =?iso-8859-1?q?Fr=E9d=E9ric_PRACA?= <frederic.praca@freebsd-fr.org> Subject: Re: Kernel crash on Asus A7N8X-X Message-ID: <200803060831.27056.jhb@freebsd.org> In-Reply-To: <1204671599.47cdd46f6b1e2@imp.free.fr> References: <1204671599.47cdd46f6b1e2@imp.free.fr>
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On Tuesday 04 March 2008 05:59:59 pm Fr=E9d=E9ric PRACA wrote: > Hello dear hackers, > I own a Asus A7N8X-X motherboard (NForce2 chipset) with a Radeon 9600 vid= eo > card. After upgrading from 6.3 to 7.0, I launched xorg which crashed the > kernel. After looking in the kernel core dump, I found that the > agp_nvidia_flush_tlb function of /usr/src/sys/pci/agp_nvidia.c crashed on > the line 377. The loop fails from the beginning (when i=3D=3D0). I commen= ted > out the two last loops and it seems to work now but as I didn't understand > what is this code for, I'd like to have some explanation about it and want > to know if someone got the same problem. The Linux AGP driver has the same code. It appears to be forcing a read of= =20 the TLB registers to force prior writes to clear the TLB entries to flush=20 perhaps? I'm not sure why you are getting a panic. What kind of fault did= =20 you get? (The original kernel panic messages would be needed.) =2D-=20 John Baldwin
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