Commit 3415cc1e authored Nov 09, 2022 by Christian König Committed by sanglipeng Jul 25, 2023

drm/amdgpu: always register an MMU notifier for userptr

stable inclusion
from stable-v5.10.157
commit feb97cf45e77ec7dfec56a3e1f0a1c8763f286ff
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7MU59

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=feb97cf45e77ec7dfec56a3e1f0a1c8763f286ff



--------------------------------

commit b39df63b upstream.

Since switching to HMM we always need that because we no longer grab
references to the pages.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
CC: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>

parent f4e387ed

drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

+3 −5

Original line number	Diff line number	Diff line
		@@ -341,11 +341,9 @@ int amdgpu_gem_userptr_ioctl(struct drm_device dev, void data,
		if (r)
		goto release_object;

		if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
		r = amdgpu_mn_register(bo, args->addr);
		if (r)
		goto release_object;
		}

		if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
		r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages);