/* $NetBSD: pte.h,v 1.1 2010/07/06 20:50:35 cegger Exp $ */ /* * Copyright (c) 2010 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Christoph Egger. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _X86_PTE_H #define _X86_PTE_H /* Cacheability bits when we are using PAT */ #define PGC_WB 0 /* The default */ #define PGC_WC PG_WT /* WT and CD is WC */ #define PGC_UCMINUS PG_N /* UC but mtrr can override */ #define PGC_UC (PG_WT | PG_N) /* hard UC */ /* * page protection exception bits */ #define PGEX_P 0x01 /* protection violation (vs. no mapping) */ #define PGEX_W 0x02 /* exception during a write cycle */ #define PGEX_U 0x04 /* exception while in user mode (upl) */ #define PGEX_X 0x10 /* exception during instruction fetch */ #endif /* _X86_PTE_H */ |