From d364c280892af29956ad7032b0d242b7d24d7846 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 14 Mar 2012 10:59:51 +0000
Subject: [PATCH] configure: Add AC_SYS_LARGEFILE for mmap64 support on 64-bit

Without enabling largefile support the prototype for mmap64() is broken
on Linux/x86_64 with the result being a 32-bit integer sign-extended
to fill a 64-bit pointer. Hilarity ensues.
---
 configure.ac             | 1 +
 tests/gem_fence_thrash.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index 94d54a60..f778a9a7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -31,6 +31,7 @@ AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
 
 AM_INIT_AUTOMAKE([foreign dist-bzip2])
 AM_PATH_PYTHON([3],, [:])
diff --git a/tests/gem_fence_thrash.c b/tests/gem_fence_thrash.c
index 2065ac65..11afba85 100644
--- a/tests/gem_fence_thrash.c
+++ b/tests/gem_fence_thrash.c
@@ -75,6 +75,7 @@ bo_create (int fd)
 	tiling.stride = 1024;
 	ret = ioctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &tiling);
 	assert(ret == 0);
+	assert(tiling.tiling_mode == I915_TILING_X);
 
 	memset(&mmap_arg, 0, sizeof(mmap_arg));
 	mmap_arg.handle = handle;