RE: [E1000-devel] 2.6.24-rc8-mm1

Brandeburg, Jesse
2008-01-17T19:47:37Z

Andrew Morton wrote:
> On Thu, 17 Jan 2008 11:22:19 -0800 "Pallipadi, Venkatesh"
> <venkatesh.pallipadi@intel.com> wrote:
>
>>
>> The problem is
>>>> modprobe:2584 conflicting cache attribute 50000000-50001000
>>>> uncached<->default
>>
>> Some address range here is being mapped with conflicting types.
>> Somewhere the range was mapped with default (write-back). Later
>> pci_iomap() is mapping that region as uncacheable which is basically
>> aliasing. PAT code detects the aliasing and fails the second
>> uncacheable request which leads in the failure.

its probably the e100 screaming interrupt disable quirk code doing the
mapping?

> It sounds to me like you need considerably more runtime debugging and
> reporting support in that code. Ensure that it generates enough
> output
> both during regular operation and during failures for you to be able
> to
> diagnose things in a single iteration.
>
> We can always take it out later.

FWIW (nothing) I agree.