drm/i915/gvt: fix incorrect cache entry for guest page mapping
commit 7366aeb7 upstream. GPU hang observed during the guest OCL conformance test which is caused by THP GTT feature used durning the test. It was observed the same GFN with different size (4K and 2M) requested from the guest in GVT. So during the guest page dma map stage, it is required to unmap first with orginal size and then remap again with requested size. Fixes: b901b252 ("drm/i915/gvt: Add 2M huge gtt support") Cc: stable@vger.kernel.org Reviewed-by:Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by:
Xiaolin Zhang <xiaolin.zhang@intel.com> Signed-off-by:
Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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a1c020ce
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