xnu-3247.1.106.tar.gz

[apple/xnu.git] / osfmk / ipc / ipc_init.c

diff --git a/osfmk/ipc/ipc_init.c b/osfmk/ipc/ipc_init.c
index 2211d1b18f19cc0ebb1b3676e3ca4be03f86cd5b..d81098ce99fe28a456af3681823ba5ed9ecc29c6 100644 (file)
--- a/osfmk/ipc/ipc_init.c
+++ b/osfmk/ipc/ipc_init.c
@@ -222,7 +222,7 @@ ipc_bootstrap(void)
 /* 
  * XXX tunable, belongs in mach.message.h 
  */
-#define MSG_OOL_SIZE_SMALL_MAX 4096
+#define MSG_OOL_SIZE_SMALL_MAX (2*PAGE_SIZE)
 vm_size_t msg_ool_size_small;
 
 /*
@@ -238,13 +238,13 @@ ipc_init(void)
        vm_offset_t min;
 
        retval = kmem_suballoc(kernel_map, &min, ipc_kernel_map_size,
-                              TRUE, VM_FLAGS_ANYWHERE, &ipc_kernel_map);
+                              TRUE, VM_FLAGS_ANYWHERE | VM_MAKE_TAG(VM_KERN_MEMORY_IPC), &ipc_kernel_map);
 
        if (retval != KERN_SUCCESS)
                panic("ipc_init: kmem_suballoc of ipc_kernel_map failed");
 
        retval = kmem_suballoc(kernel_map, &min, ipc_kernel_copy_map_size,
-                              TRUE, VM_FLAGS_ANYWHERE, &ipc_kernel_copy_map);
+                              TRUE, VM_FLAGS_ANYWHERE | VM_MAKE_TAG(VM_KERN_MEMORY_IPC), &ipc_kernel_copy_map);
 
        if (retval != KERN_SUCCESS)
                panic("ipc_init: kmem_suballoc of ipc_kernel_copy_map failed");
@@ -264,6 +264,8 @@ ipc_init(void)
        else {
                msg_ool_size_small = MSG_OOL_SIZE_SMALL_MAX;
        }
+       /* account for overhead to avoid spilling over a page */
+       msg_ool_size_small -= cpy_kdata_hdr_sz;
 
        ipc_host_init();