Re: [Intel-gfx] [PATCH v2] drm/i915/gvt: Fix cached atomics setting for Windows VM

2021-08-05 Thread Colin Xu
On Fri, 6 Aug 2021, Zhenyu Wang wrote: Thanks for the fix! Otherwise Windows VM is unusable with recent kernel. Reviewed-by: Colin Xu We've seen recent regression with host and windows VM running simultaneously that cause gpu hang or even crash. Finally bisect to commit 58586680ffad ("drm/i91

[Intel-gfx] [PATCH v2] drm/i915/gvt: Fix cached atomics setting for Windows VM

2021-08-05 Thread Zhenyu Wang
We've seen recent regression with host and windows VM running simultaneously that cause gpu hang or even crash. Finally bisect to commit 58586680ffad ("drm/i915: Disable atomics in L3 for gen9"), which seems cached atomics behavior difference caused regression issue. This tries to add new scratch