From: Thomas Hellstrom Date: Thu, 24 Aug 2017 06:06:30 +0000 (+0200) Subject: drm/vmwgfx: Support the NOP_ERROR command X-Git-Tag: v4.14-rc1~8^2~1^2~5 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5f55be5f306a619e0cdc58104f06a564f5bb30d5;p=platform%2Fkernel%2Flinux-exynos.git drm/vmwgfx: Support the NOP_ERROR command 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 --- diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c index ba2032e..8c583fd 100644 --- 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_cmd_entries[SVGA_3D_CMD_MAX] = { 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,