From a78b1d71a39ae29d5f85bd82c09202ebec3e6539 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 12 Apr 2012 15:37:25 +0100
Subject: [PATCH] sna: Declare AC_SYS_LARGEFILE for mmap64

In order to use the full 32-bits of mmap address space on small
platforms we need to use mmap64().

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 configure.ac   | 1 +
 src/sna/kgem.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index b5919bf6..51241004 100644
--- a/configure.ac
+++ b/configure.ac
@@ -52,6 +52,7 @@ m4_ifndef([XORG_DRIVER_CHECK_EXT],
 # Initialize libtool
 AC_DISABLE_STATIC
 AC_PROG_LIBTOOL
+AC_SYS_LARGEFILE
 
 # Are we in a git checkout?
 dot_git=no
diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 6ea4d480..109f3b76 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -220,7 +220,7 @@ static void *gem_mmap(int fd, uint32_t handle, int size, int prot)
 		return NULL;
 	}
 
-	ptr = mmap(0, size, prot, MAP_SHARED, fd, mmap_arg.offset);
+	ptr = mmap64(0, size, prot, MAP_SHARED, fd, mmap_arg.offset);
 	if (ptr == MAP_FAILED) {
 		assert(0);
 		ptr = NULL;