[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] iommu support on AMD64
On Thu, 2005-09-29 at 15:26 -0500, Langsdorf, Mark wrote: > > > Langsdorf, Mark wrote: > > > > I'm working on getting IOMMU support enabled > > > > for AMD64 in Xen. > > > > > > > > The current aperture.c code in dom0 requires > > > > several calls to read_pci_config() to find > > > > the AMD northbridge. These calls are causing > > > > my system to crash. > > > > > > Can you be more specific (output from serial connection, for > > > example)? The outl instruction causes #GP, and the emulator > > > in Xen handle it. So, it's possible the emulator has a bug? > > > > The serial console is pretty broken on AMD64. I was > > hoping to not have to debug the serial console in > > order to fix the IOMMU problem. > > Do you mean on your machine? Serial console works fine on my > AMD64 boxes. > > Try this in your grub.conf: > > title Xen > kernel /boot/xen.gz dom0_mem=512000 acpi=off > com1=19200,8n1,0x3f8,4 console=com1 verbose=y sync_console > module /boot/vmlinuz-2.6.12-xen0 root=/dev/sda1 debug=y > module /boot/initrd-2.6.12-xen0.img Thanks! That works. -Mark Langsdorf AMD, Inc. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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