diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3044-drm-amdgpu-Return-mmap-offset-for-private-vram.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3044-drm-amdgpu-Return-mmap-offset-for-private-vram.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3044-drm-amdgpu-Return-mmap-offset-for-private-vram.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3044-drm-amdgpu-Return-mmap-offset-for-private-vram.patch new file mode 100644 index 00000000..2fa0d5d8 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3044-drm-amdgpu-Return-mmap-offset-for-private-vram.patch @@ -0,0 +1,68 @@ +From a559cdf328e9c5e90e50fd0ad1dc8de7d63bfaba Mon Sep 17 00:00:00 2001 +From: Oak Zeng <Oak.Zeng@amd.com> +Date: Mon, 11 Dec 2017 15:42:52 -0500 +Subject: [PATCH 3044/4131] drm/amdgpu: Return mmap offset for private vram + +Previously mmap offset is not returned for private +vram allocation, because there is no need for user +space to mmap for this type of buffer. This change +returns mmap offset even for private vram allocation, +so user space can essentially mmap the buffer(with +PROT_NONE flag) for ptrace access + +Change-Id: I458059ce7dd19f17830ac50d2297eaf504526293 +Signed-off-by: Oak Zeng <Oak.Zeng@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 7 +------ + 1 file changed, 1 insertion(+), 6 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +index 3648269..606677a 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +@@ -1065,7 +1065,6 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( + bool aql_queue, public, readonly, execute, coherent, no_sub, userptr; + u64 alloc_flag; + uint32_t domain; +- uint64_t *temp_offset; + struct sg_table *sg = NULL; + + if (!(flags & ALLOC_MEM_FLAGS_NONPAGED)) { +@@ -1075,7 +1074,6 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( + + domain = 0; + alloc_flag = 0; +- temp_offset = NULL; + + aql_queue = (flags & ALLOC_MEM_FLAGS_AQL_QUEUE_MEM) ? true : false; + public = (flags & ALLOC_MEM_FLAGS_PUBLIC) ? true : false; +@@ -1093,17 +1091,14 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( + alloc_flag = AMDGPU_GEM_CREATE_NO_CPU_ACCESS; + if (public) { + alloc_flag = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; +- temp_offset = offset; + } + alloc_flag |= AMDGPU_GEM_CREATE_VRAM_CLEARED; + } else if (flags & (ALLOC_MEM_FLAGS_GTT | ALLOC_MEM_FLAGS_USERPTR)) { + domain = AMDGPU_GEM_DOMAIN_GTT; + alloc_flag = 0; +- temp_offset = offset; + } else if (flags & ALLOC_MEM_FLAGS_DOORBELL) { + domain = AMDGPU_GEM_DOMAIN_GTT; + alloc_flag = 0; +- temp_offset = offset; + if (size > UINT_MAX) + return -EINVAL; + sg = create_doorbell_sg(*offset, size); +@@ -1124,7 +1119,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( + BOOL_TO_STR(coherent), BOOL_TO_STR(no_sub)); + + return __alloc_memory_of_gpu(kgd, va, size, vm, mem, +- temp_offset, domain, ++ offset, domain, + alloc_flag, sg, + aql_queue, readonly, execute, + coherent, no_sub, userptr); +-- +2.7.4 + |