Re: 5.3-rc3: Frozen graphics with kcompactd migrating i915 pages

2019-09-12 Thread Chris Wilson
Quoting Linus Torvalds (2019-09-12 12:59:25) > On Thu, Sep 12, 2019 at 12:51 PM Martin Wilck wrote: > > > > Is there an alternative to reverting aa56a292ce62 ("drm/i915/userptr: > > Acquire the page lock around set_page_dirty()")? And if we do, what > > would be the consequences? Would other

Re: 5.3-rc3: Frozen graphics with kcompactd migrating i915 pages

2019-09-12 Thread Martin Wilck
Hi Chris, On Tue, 2019-09-10 at 17:20 +0300, Leho Kraav wrote: > On Fri, Aug 09, 2019 at 01:53:43PM +0100, Chris Wilson wrote: > > Quoting Martin Wilck (2019-08-09 13:41:42) > > > This happened to me today, running kernel 5.3.0-rc3-1.g571863b- > > > default > > > (5.3-rc3 with just a few patches

Re: 5.3-rc3: Frozen graphics with kcompactd migrating i915 pages

2019-09-12 Thread l...@kraav.com
On Thu, Sep 12, 2019 at 11:23:09AM +, Martin Wilck wrote: > > There's a considerable risk that many users will start seeing this > regression when 5.3 is released. I am not aware of a workaround. > > Is there an alternative to reverting aa56a292ce62 ("drm/i915/userptr: > Acquire the page

Re: 5.3-rc3: Frozen graphics with kcompactd migrating i915 pages

2019-09-10 Thread Leho Kraav
On Fri, Aug 09, 2019 at 01:53:43PM +0100, Chris Wilson wrote: > Quoting Martin Wilck (2019-08-09 13:41:42) > > This happened to me today, running kernel 5.3.0-rc3-1.g571863b-default > > (5.3-rc3 with just a few patches on top), after starting a KVM virtual > > machine. The X screen was frozen.