dnl #
dnl # 4.17 API
dnl # commit 82626363a217d79128c447ab296777b461e9f050
dnl # drm: add func to get max iomem address v2
dnl #
AC_DEFUN([AC_AMDGPU_DRM_GET_MAX_IOMEM],
	[AC_MSG_CHECKING([whether drm_get_max_iomem() is available])
	AC_KERNEL_TRY_COMPILE_SYMBOL([
		#include <drm/drm_cache.h>
	], [
		u64 addr;
		addr = drm_get_max_iomem();
	], [drm_get_max_iomem], [drivers/gpu/drm/drm_memory.c], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_DRM_GET_MAX_IOMEM, 1, [ddrm_get_max_iome() is available])
	], [
		AC_MSG_RESULT(no)
	])
])