From: Thomas Hellstrom Date: Thu, 24 Aug 2017 08:06:30 +0200 Subject: drm/vmwgfx: Support the NOP_ERROR command Git-commit: 5f55be5f306a619e0cdc58104f06a564f5bb30d5 Patch-mainline: v4.14-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 Can be used by user-space applications to test and verify the kernel command buffer error recovery functionality. Malicious user-space apps could potentially use this command to slow down graphics processing somewhat, but they could also accomplish the same thing using a random malformed command so this should be considered safe. At least as safe as it gets. Signed-off-by: Thomas Hellstrom Reviewed-by: Brian Paul Reviewed-by: Sinclair Yeh Acked-by: Petr Tesarik --- drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c @@ -3303,6 +3303,8 @@ static const struct vmw_cmd_entry vmw_cm true, false, true), VMW_CMD_DEF(SVGA_3D_CMD_NOP, &vmw_cmd_ok, true, false, true), + VMW_CMD_DEF(SVGA_3D_CMD_NOP_ERROR, &vmw_cmd_ok, + true, false, true), VMW_CMD_DEF(SVGA_3D_CMD_ENABLE_GART, &vmw_cmd_invalid, false, false, true), VMW_CMD_DEF(SVGA_3D_CMD_DISABLE_GART, &vmw_cmd_invalid,