On 2021-03-29 20:10 +0200, Christian König wrote: > You need to identify the root cause of this, most likely start or last > are not a multiple of AMDGPU_GPU_PAGES_IN_CPU_PAGE.
I printk'ed the value of start & last, they are all a multiple of 4 (AMDGPU_GPU_PAGES_IN_CPU_PAGE). However... `num_entries = last - start + 1` so it became some irrational thing... Either this line is wrong, or someone called amdgpu_vm_bo_update_mapping with [start, last) instead of [start, last], which is unexpected. > > > > BugLink: https://gitlab.freedesktop.org/drm/amd/-/issues/1549 > > > > Fixes: a39f2a8d7066 ("drm/amdgpu: nuke amdgpu_vm_bo_split_mapping v2") > > > > Reported-by: Xi Ruoyao <xry...@mengyan1223.wang> > > > > Reported-by: Dan Horák <d...@danny.cz> > > > > Cc: sta...@vger.kernel.org > > > > Signed-off-by: Xi Ruoyao <xry...@mengyan1223.wang> > > > > --- > > > > drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 2 +- > > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c > > > > b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c > > > > index ad91c0c3c423..cee0cc9c8085 100644 > > > > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c > > > > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c > > > > @@ -1707,7 +1707,7 @@ static int amdgpu_vm_bo_update_mapping(struct > > > > amdgpu_device *adev, > > > > } > > > > start = tmp; > > > > > > > > - } while (unlikely(start != last + 1)); > > > > + } while (unlikely(start < last + 1)); > > > > > > > > r = vm->update_funcs->commit(¶ms, fence); > > > > > > > > > > > > base-commit: a5e13c6df0e41702d2b2c77c8ad41677ebb065b3 > -- Xi Ruoyao <xry...@mengyan1223.wang> School of Aerospace Science and Technology, Xidian University
