[Intel-gfx] [Regression] drm/i915: Don't use BAR mappings for ring buffers with LLC alone creates issues in stable kernels

[Philip Müller]

On 20.03.23 20:28, Greg Kroah-Hartman wrote:
> On Sun, Mar 19, 2023 at 10:01:01AM +0700, Philip Müller wrote:
>> Have to correct the affected kernels to these: 4.14.310, 4.19.278, 5.4.237,
>> 5.10.175
> 
> Please don't top-post :(
> 
> Anyway, should be fixed in the next round of releases in a few days, if
> not, please let us know.
> 
> greg k-h

Hi Greg,

seems the RCs work out. 4.19.279-rc1 and 5.10.176-rc1 were tested by a 
user who had the issue on i915. In 5.15 series the drm patch got 
reverted. I only see "drm/i915: Don't use stolen memory for ring buffers 
with LLC" there as "drm/i915: Don't use BAR mappings for ring buffers 
with LLC" was reverted with 5.15.101.

-- 
Best, Philip