diff -up Mesa-7.0/src/mesa/tnl/t_vertex_sse.c.jx Mesa-7.0/src/mesa/tnl/t_vertex_sse.c
--- Mesa-7.0/src/mesa/tnl/t_vertex_sse.c.jx	2007-06-21 18:10:54.000000000 -0400
+++ Mesa-7.0/src/mesa/tnl/t_vertex_sse.c	2007-07-23 15:59:26.000000000 -0400
@@ -348,7 +348,8 @@ static GLboolean build_vertex_emit( stru
    struct x86_reg vp1 = x86_make_reg(file_XMM, 2);
    GLubyte *fixup, *label;
 
-   x86_init_func(&p->func);
+   if (!x86_init_func(&p->func))
+       return GL_FALSE;
    
    /* Push a few regs?
     */
@@ -646,7 +647,10 @@ void _tnl_generate_sse_emit( GLcontext *
    p.identity = x86_make_reg(file_XMM, 6);
    p.chan0 = x86_make_reg(file_XMM, 7);
 
-   x86_init_func(&p.func);
+   if (!x86_init_func(&p.func)) {
+      vtx->codegen_emit = NULL;
+      return;
+   }
 
    if (build_vertex_emit(&p)) {
       _tnl_register_fastpath( vtx, GL_TRUE );
diff -up Mesa-7.0/src/mesa/x86/rtasm/x86sse.h.jx Mesa-7.0/src/mesa/x86/rtasm/x86sse.h
--- Mesa-7.0/src/mesa/x86/rtasm/x86sse.h.jx	2007-06-21 18:10:55.000000000 -0400
+++ Mesa-7.0/src/mesa/x86/rtasm/x86sse.h	2007-07-23 15:59:23.000000000 -0400
@@ -80,8 +80,8 @@ enum sse_cc {
  */
 
 
-void x86_init_func( struct x86_function *p );
-void x86_init_func_size( struct x86_function *p, GLuint code_size );
+int x86_init_func( struct x86_function *p );
+int x86_init_func_size( struct x86_function *p, GLuint code_size );
 void x86_release_func( struct x86_function *p );
 void (*x86_get_func( struct x86_function *p ))( void );
 
diff -up Mesa-7.0/src/mesa/x86/rtasm/x86sse.c.jx Mesa-7.0/src/mesa/x86/rtasm/x86sse.c
--- Mesa-7.0/src/mesa/x86/rtasm/x86sse.c.jx	2007-06-21 18:10:55.000000000 -0400
+++ Mesa-7.0/src/mesa/x86/rtasm/x86sse.c	2007-07-23 15:59:23.000000000 -0400
@@ -1063,15 +1063,17 @@ struct x86_reg x86_fn_arg( struct x86_fu
 }
 
 
-void x86_init_func( struct x86_function *p )
+int x86_init_func( struct x86_function *p )
 {
-   x86_init_func_size(p, 1024);
+   return x86_init_func_size(p, 1024);
 }
 
-void x86_init_func_size( struct x86_function *p, GLuint code_size )
+int x86_init_func_size( struct x86_function *p, GLuint code_size )
 {
    p->store = _mesa_exec_malloc(code_size);
    p->csr = p->store;
+
+   return (p->store != NULL);
 }
 
 void x86_release_func( struct x86_function *p )
diff -up Mesa-7.0/src/mesa/main/execmem.c.jx Mesa-7.0/src/mesa/main/execmem.c
--- Mesa-7.0/src/mesa/main/execmem.c.jx	2007-06-21 18:10:54.000000000 -0400
+++ Mesa-7.0/src/mesa/main/execmem.c	2007-07-23 16:02:30.000000000 -0400
@@ -46,6 +46,7 @@
 #include <unistd.h>
 #include <sys/mman.h>
 #include "mm.h"
+#include <selinux/selinux.h>
 
 #define EXEC_HEAP_SIZE (10*1024*1024)
 
@@ -55,9 +56,16 @@ static struct mem_block *exec_heap = NUL
 static unsigned char *exec_mem = NULL;
 
 
-static void
+static int
 init_heap(void)
 {
+
+   if (is_selinux_enabled()) {
+      if (!security_get_boolean_active("allow_execmem") ||
+	  !security_get_boolean_pending("allow_execmem"))
+      return 0;
+   }
+
    if (!exec_heap)
       exec_heap = mmInit( 0, EXEC_HEAP_SIZE );
    
@@ -65,6 +73,8 @@ init_heap(void)
       exec_mem = (unsigned char *) mmap(0, EXEC_HEAP_SIZE, 
 					PROT_EXEC | PROT_READ | PROT_WRITE, 
 					MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+
+   return (exec_mem != NULL);
 }
 
 
@@ -76,7 +86,8 @@ _mesa_exec_malloc(GLuint size)
 
    _glthread_LOCK_MUTEX(exec_mutex);
 
-   init_heap();
+   if (!init_heap())
+      goto bail;
 
    if (exec_heap) {
       size = (size + 31) & ~31;
@@ -87,7 +98,8 @@ _mesa_exec_malloc(GLuint size)
       addr = exec_mem + block->ofs;
    else 
       _mesa_printf("_mesa_exec_malloc failed\n");
-   
+
+bail: 
    _glthread_UNLOCK_MUTEX(exec_mutex);
    
    return addr;
diff -up Mesa-7.0/configs/linux-dri.jx Mesa-7.0/configs/linux-dri
--- Mesa-7.0/configs/linux-dri.jx	2007-07-23 15:59:07.000000000 -0400
+++ Mesa-7.0/configs/linux-dri	2007-07-23 17:37:36.000000000 -0400
@@ -39,7 +39,8 @@ EXTRA_LIB_PATH =
 
 LIBDRM_CFLAGS = `pkg-config --cflags libdrm`
 LIBDRM_LIB = `pkg-config --libs libdrm`
-DRI_LIB_DEPS  = $(EXTRA_LIB_PATH) -lm -lpthread -lexpat -ldl $(LIBDRM_LIB)
+DRI_LIB_DEPS  = $(EXTRA_LIB_PATH) -lm -lpthread -lexpat -ldl $(LIBDRM_LIB) \
+		-lselinux
 GL_LIB_DEPS   = $(EXTRA_LIB_PATH) -lX11 -lXext -lXxf86vm -lXdamage -lXfixes \
 		-lm -lpthread -ldl \
                 $(LIBDRM_LIB)