On 07/10/2014 10:21 AM, Chris Wilson wrote:
Jerome Glisse pointed out that get_user_pages() does not synchronize
with concurrent invalidations of the VMA. As such if the backing vma is
changed whilst the pages for the object are being grabbed for use by the
GPU, we may end up with a random mixtu
On Thu, Jul 10, 2014 at 10:21:44AM +0100, Chris Wilson wrote:
> Jerome Glisse pointed out that get_user_pages() does not synchronize
> with concurrent invalidations of the VMA. As such if the backing vma is
> changed whilst the pages for the object are being grabbed for use by the
> GPU, we may end
Jerome Glisse pointed out that get_user_pages() does not synchronize
with concurrent invalidations of the VMA. As such if the backing vma is
changed whilst the pages for the object are being grabbed for use by the
GPU, we may end up with a random mixture of page references being held.
Worse still a
