From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: [git pull] IOMMU Updates for v3.7-rc1 Date: Wed, 10 Oct 2012 09:30:22 +0200 Message-ID: <20121010073022.GB16151@8bytes.org> References: <20121005152312.GA4649@8bytes.org> <20121009224532.1e515664@ado-amd-gentoo.moore.slainvet.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20121009224532.1e515664-IjT0q3EH84DI7ueSY2wKCeWwSe/Luo9VmGrBRn/+eNheoWH0uzbU5w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Andrew Oakley Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: iommu@lists.linux-foundation.org Hi Andrew, On Tue, Oct 09, 2012 at 10:45:32PM +0100, Andrew Oakley wrote: > On Fri, 5 Oct 2012 17:23:12 +0200 > Joerg Roedel wrote: > ACPI: Core revision 20120711 > ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 > Kernel panic - not syncing: timer doesn't work through Interrupt-remapped IO-APIC > Pid: 1, comm: swapper/0 Not tainted 3.6.0+ #2 > Call Trace: > [] ? panic+0xc5/0x1d0 > [] ? printk+0x4c/0x51 > [] ? setup_IO_APIC+0x325/0x710 > [] ? native_smp_prepare_cpus+0x2b9/0x334 > [] ? kernel_init+0x59/0x190 > [] ? kernel_thread_helper+0x4/0x10 > [] ? start_kernel+0x2c7/0x2c7 > [] ? gs_change+0x13/0x13 > > There is a patch to fix a similar problem (32ab31e) for the Intel IRQ > remapping code but I don't know if this is likely to be the same issue > or not. Can you please boot with 'amd_iommu_dump nointremap' on your kernel command line and post dmesg? I guess your ACPI table is broken in some way. The problem seen on VT-d exists on AMD too, but I have a workaround for that in the code already. This must be something else... Thanks, Joerg