Does the DRM git tree work would also be interesting,...
I haven't merged up Michel's drawable/blank changes for 2.6.19 as they
were much too new for it, but do we have a backwards compat issue perhaps
or something similiar?
Dave.
On Wed, 18 Oct 2006, Keith Whitwell wrote:
> This is all a little confusing as the driver doesn't really use that
> path in normal operation except for a single command - MI_FLUSH, which
> is shared between the architectures. In normal operation the hardware
> does the validation for us for the bulk of the command stream. If there
> were missing functionality in that ioctl, it would be failing
> everywhere, not just in this one case.
>
> I guess the questions I'd have are
> - did the driver work before the kernel upgrade?
> - what path in userspace is seeing you end up in this ioctl?
> - and like Keith, what commands are you seeing?
>
> The final question is interesting not because we want to extend the
> ioctl to cover those, but because it will give a clue how you ended up
> there in the first place.
>
> Keith
>
> Keith Packard wrote:
>> On Tue, 2006-10-17 at 13:40 -0400, Ryan Richter wrote:
>>
>>> So do I want something like
>>>
>>>
>>> static int do_validate_cmd(int cmd)
>>> {
>>> return 1;
>>> }
>>>
>>> in i915_dma.c?
>>
>> that will certainly avoid any checks. Another alternative is to printk
>> the cmd which fails validation so we can see what needs adding here.
>>
>>
>>
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David Airlie, Software Engineer
http://www.skynet.ie/~airlied / airlied at skynet.ie
Linux kernel - DRI, VAX / pam_smb / ILUG
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