On Tue, Oct 18, 2016 at 09:54:23AM +0100, Tvrtko Ursulin wrote:
> On 18/10/2016 09:38, Chris Wilson wrote:
> >>>(a) it is safe to do so, and I can legitimately setup userspace to use
> >>>this
> >>How what where? :)
> >igt, whereelse, has a test case to check we can execute from read only
> >memory
On 18/10/2016 09:38, Chris Wilson wrote:
On Tue, Oct 18, 2016 at 09:22:56AM +0100, Tvrtko Ursulin wrote:
On 18/10/2016 09:17, Chris Wilson wrote:
On Tue, Oct 18, 2016 at 09:01:30AM +0100, Tvrtko Ursulin wrote:
On 17/10/2016 15:10, Chris Wilson wrote:
When handling execbuf relocations, we pla
On Tue, Oct 18, 2016 at 09:22:56AM +0100, Tvrtko Ursulin wrote:
>
> On 18/10/2016 09:17, Chris Wilson wrote:
> >On Tue, Oct 18, 2016 at 09:01:30AM +0100, Tvrtko Ursulin wrote:
> >>On 17/10/2016 15:10, Chris Wilson wrote:
> >>>When handling execbuf relocations, we play a delicate dance with
> >>>pa
On 18/10/2016 09:17, Chris Wilson wrote:
On Tue, Oct 18, 2016 at 09:01:30AM +0100, Tvrtko Ursulin wrote:
On 17/10/2016 15:10, Chris Wilson wrote:
When handling execbuf relocations, we play a delicate dance with
pagefault. We first try to access the user pages underneath our
struct_mutex. Howev
On Tue, Oct 18, 2016 at 09:01:30AM +0100, Tvrtko Ursulin wrote:
>
> On 17/10/2016 15:10, Chris Wilson wrote:
> >When handling execbuf relocations, we play a delicate dance with
> >pagefault. We first try to access the user pages underneath our
> >struct_mutex. However, if those pages were inside a
On 17/10/2016 15:10, Chris Wilson wrote:
When handling execbuf relocations, we play a delicate dance with
pagefault. We first try to access the user pages underneath our
struct_mutex. However, if those pages were inside a GEM object, we may
trigger a pagefault and deadlock as i915_gem_fault() tr
When handling execbuf relocations, we play a delicate dance with
pagefault. We first try to access the user pages underneath our
struct_mutex. However, if those pages were inside a GEM object, we may
trigger a pagefault and deadlock as i915_gem_fault() tries to
recursively acquire struct_mutex. Ins
