Re: [PATCH] drm/nouveau/kms: Implement KDB debug hooks for nouveau KMS.

[Jason Wessel <jason.wessel@windriver.com>]

On 08/23/2010 03:50 PM, Chris Ball wrote:
> Hi Francisco,
>
>    > There is a problem with this on pre-nv20 cards. Fbcon
>    > acceleration won't work properly with IRQs disabled because you
>    > miss the context switching interrupts: You'll get a locked up
>    > fbcon if you hit sysrq-g when there's some process using the GPU.
>    > 
>    > I'd suggest disabling acceleration while in debug mode
>    > (e.g. using nouveau_fbcon_save_disable_accel()). That aside the
>    > patch looks good to me.
>
> Thanks very much for this.  Here's a (only compile-tested) patch for
> this, on top of jwessel's current kgdb-next branch.  Jason, would you
> mind testing on pre-nv20 and applying?
>
>   
Thanks Chris,

This is applied to the kgdb tree, and I'll send the whole atomic
modesetting series over to dri-devel as soon as it passes the regression
tests as that should be the place it is merged from unless we receive
sign-off from Jesse Barnes and Dave Airlie in which case I'll put it in
a future pull request.

It was pretty cool to see the kdb/kms feature finally working on the
laptop I use the most.

Thanks,
Jason.

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