[PATCH] drm/i915/gvt: fix incorrect cache entry for guest page mapping

[Zhang, Xiaolin]

On 07/17/2019 03:55 PM, Greg KH wrote:
> On Wed, Jul 17, 2019 at 11:56:27PM +0800, Xiaolin Zhang wrote:
>> 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: b901b252b6cf ("drm/i915/gvt: Add 2M huge gtt support")
>> Signed-off-by: Xiaolin Zhang <xiaolin.zhang at intel.com>
>> ---
>>  drivers/gpu/drm/i915/gvt/kvmgt.c | 12 ++++++++++++
>>  1 file changed, 12 insertions(+)
> <formletter>
>
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree.  Please read:
>     https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> for how to do this properly.
>
> </formletter>
>
Greg, Thanks great information to point out this I am not fully aware.
will resend to correct this.

-Xiaolin