diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0825-drm-amdgpu-Make-amdgpu_ttm_tt_get_user_pages-work-in.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0825-drm-amdgpu-Make-amdgpu_ttm_tt_get_user_pages-work-in.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0825-drm-amdgpu-Make-amdgpu_ttm_tt_get_user_pages-work-in.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0825-drm-amdgpu-Make-amdgpu_ttm_tt_get_user_pages-work-in.patch new file mode 100644 index 00000000..f8fbb503 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0825-drm-amdgpu-Make-amdgpu_ttm_tt_get_user_pages-work-in.patch @@ -0,0 +1,51 @@ +From 83f520bbb6648732ee0329d218cb007ed58680cd Mon Sep 17 00:00:00 2001 +From: Felix Kuehling <Felix.Kuehling@amd.com> +Date: Fri, 15 Jan 2016 16:19:12 -0500 +Subject: [PATCH 0825/4131] drm/amdgpu: Make amdgpu_ttm_tt_get_user_pages work + in kernel thread + +For HSA userptr support, a kernel worker thread must be able to +re-pin a userptr BO after an MMU notifier unpinned it. Store the +user task_struct in amdgpu_ttm_tt and use that task and its +mm_struct instead of the current thread's. + +Change-Id: I3ba20fc9c489ad598c9706cf0b64231a18a0ec9f +Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 6 +++--- + 1 file changed, 3 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +index a80d9cb..f81146b 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +@@ -657,7 +657,7 @@ struct amdgpu_ttm_tt { + struct amdgpu_device *adev; + u64 offset; + uint64_t userptr; +- struct mm_struct *usermm; ++ struct task_struct *usertask; + uint32_t userflags; + spinlock_t guptasklock; + struct list_head guptasks; +@@ -681,7 +681,7 @@ int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages) + unsigned long end = gtt->userptr + ttm->num_pages * PAGE_SIZE; + struct vm_area_struct *vma; + +- vma = find_vma(gtt->usermm, gtt->userptr); ++ vma = find_vma(gtt->usertask->mm, gtt->userptr); + if (!vma || vma->vm_file || vma->vm_end < end) + return -EPERM; + } +@@ -1041,7 +1041,7 @@ int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr, + return -EINVAL; + + gtt->userptr = addr; +- gtt->usermm = current->mm; ++ gtt->usertask = current; + gtt->userflags = flags; + spin_lock_init(>t->guptasklock); + INIT_LIST_HEAD(>t->guptasks); +-- +2.7.4 + |