initial support for a commpage, which is a chunk of memory in high kernel space with user readonly permissions.

The first use is to let the kernel decide what the preferred syscall mechanism is at boot time and copy the
appropriate user space code there. Can be used for routines the kernel can decide best how to use (memcpy, some
timing routines, etc).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20161 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/arch/x86/commpage.h

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2007, Travis Geiselbrecht. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _KERNEL_ARCH_x86_COMMPAGE_H
+#define _KERNEL_ARCH_x86_COMMPAGE_H
+
+
+status_t commpage_init(void);
+
+#endif
+