Re: [Xen-devel] Re: pvops: i915 kms crashs with corrupt page table

[Bastian Blank <waldi@xxxxxxxxxx>]

On Thu, Feb 25, 2010 at 11:06:20AM +0100, Bastian Blank wrote:
> On Wed, Feb 24, 2010 at 11:23:37AM -0800, Jeremy Fitzhardinge wrote:
> > On 02/24/2010 09:55 AM, Bastian Blank wrote:
> >> I run a 2.6.32 dom0 kernel (the Debian distribution config). If I enable
> >> KMS in the intel driver, Xorg crashs with corrupt page table.
> > Does this help?
> 
> No.

But it is something like that:

intel_i810_configure:
        pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
        agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);

agp_copy_info:
        info->aper_base = bridge->gart_bus_addr;

drm_agp_init:
        head->base = head->agp_info.aper_base;

        dev->agp = head

i915_gem_init_ringbuffer:
        ring->map.offset = dev->agp->base + obj_priv->gtt_offset;

This address is directly used to create a userspace mapping.

Bastian

-- 
Without freedom of choice there is no creativity.
                -- Kirk, "The return of the Archons", stardate 3157.4

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