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 <[email protected]> --- drivers/gpu/drm/i915/i915_gem_gtt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 731ce229a923..be52b139817d 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -1175,7 +1175,7 @@ static int gen8_ppgtt_alloc_pd(struct i915_address_space *vm, if (IS_ERR(pt)) goto unwind; - if (count < GEN8_PTES) + if (count < GEN8_PTES || intel_vgpu_active(vm->i915)) gen8_initialize_pt(vm, pt); gen8_ppgtt_set_pde(vm, pd, pt, pde); -- 2.14.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
