[Intel-gfx] [PATCH v1] drm/i915: Enhanced for initialize partially filled pagetables

[Joonas Lahtinen]

On Thu, 2017-09-28 at 10:09 +0800, Xiaolin Zhang wrote:
> if vgpu active, the page table entry should be initialized after
> allocation and then the hypersivor can ping pages succesuffly,
> otherwise hypervisor will ping pages failed and the host will print
> a lot of annoying errors such as “ERROR gvt: guest page write error -22,
> gfn 0x7ada8, pa 0x7ada89a8, var 0x6, len 1” when create linux guest.
> 
> Signed-off-by: Xiaolin Zhang <xiaolin.zhang at intel.com>

Why does the hypervisor try to access the entries prior to them being
made valid for hardware?

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation