From 3ed605bc8a0a688d8750a1e2eff39c854418c5cf Mon Sep 17 00:00:00 2001 From: Gustavo Padovan Date: Tue, 26 Apr 2016 12:32:27 -0300 Subject: [PATCH] kernel.h: add u64_to_user_ptr() This function had copies in 3 different files. Unify them in kernel.h. Cc: Joe Perches Cc: Andrew Morton Cc: David Airlie Cc: Daniel Vetter Cc: Rob Clark Signed-off-by: Gustavo Padovan Acked-by: Daniel Vetter [drm/i915/] Acked-by: Rob Clark [drm/msm/] Acked-by: Lucas Stach [drm/etinav/] Acked-by: Maarten Lankhorst Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 11 +++-------- drivers/gpu/drm/i915/i915_drv.h | 5 ----- drivers/gpu/drm/i915/i915_gem.c | 14 +++++++------- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 14 +++++++------- drivers/gpu/drm/msm/msm_gem_submit.c | 11 +++-------- include/linux/kernel.h | 7 +++++++ 6 files changed, 27 insertions(+), 35 deletions(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c index 236ada9..afdd55d 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c @@ -28,11 +28,6 @@ #define BO_LOCKED 0x4000 #define BO_PINNED 0x2000 -static inline void __user *to_user_ptr(u64 address) -{ - return (void __user *)(uintptr_t)address; -} - static struct etnaviv_gem_submit *submit_create(struct drm_device *dev, struct etnaviv_gpu *gpu, size_t nr) { @@ -347,21 +342,21 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, cmdbuf->exec_state = args->exec_state; cmdbuf->ctx = file->driver_priv; - ret = copy_from_user(bos, to_user_ptr(args->bos), + ret = copy_from_user(bos, u64_to_user_ptr(args->bos), args->nr_bos * sizeof(*bos)); if (ret) { ret = -EFAULT; goto err_submit_cmds; } - ret = copy_from_user(relocs, to_user_ptr(args->relocs), + ret = copy_from_user(relocs, u64_to_user_ptr(args->relocs), args->nr_relocs * sizeof(*relocs)); if (ret) { ret = -EFAULT; goto err_submit_cmds; } - ret = copy_from_user(stream, to_user_ptr(args->stream), + ret = copy_from_user(stream, u64_to_user_ptr(args->stream), args->stream_size); if (ret) { ret = -EFAULT; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 1048093..bb624cc 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3576,11 +3576,6 @@ static inline i915_reg_t i915_vgacntrl_reg(struct drm_device *dev) return VGACNTRL; } -static inline void __user *to_user_ptr(u64 address) -{ - return (void __user *)(uintptr_t)address; -} - static inline unsigned long msecs_to_jiffies_timeout(const unsigned int m) { unsigned long j = msecs_to_jiffies(m); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index dabc089..2889716 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -324,7 +324,7 @@ i915_gem_phys_pwrite(struct drm_i915_gem_object *obj, { struct drm_device *dev = obj->base.dev; void *vaddr = obj->phys_handle->vaddr + args->offset; - char __user *user_data = to_user_ptr(args->data_ptr); + char __user *user_data = u64_to_user_ptr(args->data_ptr); int ret = 0; /* We manually control the domain here and pretend that it @@ -605,7 +605,7 @@ i915_gem_shmem_pread(struct drm_device *dev, int needs_clflush = 0; struct sg_page_iter sg_iter; - user_data = to_user_ptr(args->data_ptr); + user_data = u64_to_user_ptr(args->data_ptr); remain = args->size; obj_do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); @@ -692,7 +692,7 @@ i915_gem_pread_ioctl(struct drm_device *dev, void *data, return 0; if (!access_ok(VERIFY_WRITE, - to_user_ptr(args->data_ptr), + u64_to_user_ptr(args->data_ptr), args->size)) return -EFAULT; @@ -783,7 +783,7 @@ i915_gem_gtt_pwrite_fast(struct drm_device *dev, if (ret) goto out_unpin; - user_data = to_user_ptr(args->data_ptr); + user_data = u64_to_user_ptr(args->data_ptr); remain = args->size; offset = i915_gem_obj_ggtt_offset(obj) + args->offset; @@ -907,7 +907,7 @@ i915_gem_shmem_pwrite(struct drm_device *dev, int needs_clflush_before = 0; struct sg_page_iter sg_iter; - user_data = to_user_ptr(args->data_ptr); + user_data = u64_to_user_ptr(args->data_ptr); remain = args->size; obj_do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); @@ -1036,12 +1036,12 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, return 0; if (!access_ok(VERIFY_READ, - to_user_ptr(args->data_ptr), + u64_to_user_ptr(args->data_ptr), args->size)) return -EFAULT; if (likely(!i915.prefault_disable)) { - ret = fault_in_multipages_readable(to_user_ptr(args->data_ptr), + ret = fault_in_multipages_readable(u64_to_user_ptr(args->data_ptr), args->size); if (ret) return -EFAULT; diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 1328bc5..e60b4e7 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -514,7 +514,7 @@ i915_gem_execbuffer_relocate_vma(struct i915_vma *vma, struct drm_i915_gem_exec_object2 *entry = vma->exec_entry; int remain, ret; - user_relocs = to_user_ptr(entry->relocs_ptr); + user_relocs = u64_to_user_ptr(entry->relocs_ptr); remain = entry->relocation_count; while (remain) { @@ -865,7 +865,7 @@ i915_gem_execbuffer_relocate_slow(struct drm_device *dev, u64 invalid_offset = (u64)-1; int j; - user_relocs = to_user_ptr(exec[i].relocs_ptr); + user_relocs = u64_to_user_ptr(exec[i].relocs_ptr); if (copy_from_user(reloc+total, user_relocs, exec[i].relocation_count * sizeof(*reloc))) { @@ -1009,7 +1009,7 @@ validate_exec_list(struct drm_device *dev, invalid_flags |= EXEC_OBJECT_NEEDS_GTT; for (i = 0; i < count; i++) { - char __user *ptr = to_user_ptr(exec[i].relocs_ptr); + char __user *ptr = u64_to_user_ptr(exec[i].relocs_ptr); int length; /* limited by fault_in_pages_readable() */ if (exec[i].flags & invalid_flags) @@ -1696,7 +1696,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, return -ENOMEM; } ret = copy_from_user(exec_list, - to_user_ptr(args->buffers_ptr), + u64_to_user_ptr(args->buffers_ptr), sizeof(*exec_list) * args->buffer_count); if (ret != 0) { DRM_DEBUG("copy %d exec entries failed %d\n", @@ -1732,7 +1732,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, ret = i915_gem_do_execbuffer(dev, data, file, &exec2, exec2_list); if (!ret) { struct drm_i915_gem_exec_object __user *user_exec_list = - to_user_ptr(args->buffers_ptr); + u64_to_user_ptr(args->buffers_ptr); /* Copy the new buffer offsets back to the user's exec list. */ for (i = 0; i < args->buffer_count; i++) { @@ -1786,7 +1786,7 @@ i915_gem_execbuffer2(struct drm_device *dev, void *data, return -ENOMEM; } ret = copy_from_user(exec2_list, - to_user_ptr(args->buffers_ptr), + u64_to_user_ptr(args->buffers_ptr), sizeof(*exec2_list) * args->buffer_count); if (ret != 0) { DRM_DEBUG("copy %d exec entries failed %d\n", @@ -1799,7 +1799,7 @@ i915_gem_execbuffer2(struct drm_device *dev, void *data, if (!ret) { /* Copy the new buffer offsets back to the user's exec list. */ struct drm_i915_gem_exec_object2 __user *user_exec_list = - to_user_ptr(args->buffers_ptr); + u64_to_user_ptr(args->buffers_ptr); int i; for (i = 0; i < args->buffer_count; i++) { diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 43d2181..23d2528 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -28,11 +28,6 @@ #define BO_LOCKED 0x4000 #define BO_PINNED 0x2000 -static inline void __user *to_user_ptr(u64 address) -{ - return (void __user *)(uintptr_t)address; -} - static struct msm_gem_submit *submit_create(struct drm_device *dev, struct msm_gpu *gpu, int nr) { @@ -68,7 +63,7 @@ static int submit_lookup_objects(struct msm_gem_submit *submit, struct drm_gem_object *obj; struct msm_gem_object *msm_obj; void __user *userptr = - to_user_ptr(args->bos + (i * sizeof(submit_bo))); + u64_to_user_ptr(args->bos + (i * sizeof(submit_bo))); ret = copy_from_user(&submit_bo, userptr, sizeof(submit_bo)); if (ret) { @@ -257,7 +252,7 @@ static int submit_reloc(struct msm_gem_submit *submit, struct msm_gem_object *ob for (i = 0; i < nr_relocs; i++) { struct drm_msm_gem_submit_reloc submit_reloc; void __user *userptr = - to_user_ptr(relocs + (i * sizeof(submit_reloc))); + u64_to_user_ptr(relocs + (i * sizeof(submit_reloc))); uint32_t iova, off; bool valid; @@ -356,7 +351,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, for (i = 0; i < args->nr_cmds; i++) { struct drm_msm_gem_submit_cmd submit_cmd; void __user *userptr = - to_user_ptr(args->cmds + (i * sizeof(submit_cmd))); + u64_to_user_ptr(args->cmds + (i * sizeof(submit_cmd))); struct msm_gem_object *msm_obj; uint32_t iova; diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 2f7775e..f3e45cb 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -53,6 +53,13 @@ #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) +#define u64_to_user_ptr(x) ( \ +{ \ + typecheck(u64, x); \ + (void __user *)(uintptr_t)x; \ +} \ +) + /* * This looks more complex than it should be. But we need to * get the type for the ~ right in round_down (it needs to be -- 2.7.4