Module Name: src
Committed By: dyoung
Date: Mon May 10 18:46:59 UTC 2010
Modified Files:
src/sys/arch/x86/include: pmap.h
src/sys/arch/x86/x86: bus_space.c pmap.c
src/sys/arch/xen/conf: files.xen
Added Files:
src/sys/arch/xen/x86: xen_pmap.c
Log Message:
Provide pmap_enter_ma(), pmap_extract_ma(), pmap_kenter_ma() in all x86
kernels, and use them in the bus_space(9) implementation instead of ugly
Xen #ifdef-age. In a non-Xen kernel, the _ma() functions either call or
alias the equivalent _pa() functions.
Reviewed on [email protected] and [email protected]. Passes
rmind@'s and bouyer@'s inspection. Tested on i386 and on Xen DOMU /
DOM0.
To generate a diff of this commit:
cvs rdiff -u -r1.29 -r1.30 src/sys/arch/x86/include/pmap.h
cvs rdiff -u -r1.28 -r1.29 src/sys/arch/x86/x86/bus_space.c
cvs rdiff -u -r1.108 -r1.109 src/sys/arch/x86/x86/pmap.c
cvs rdiff -u -r1.106 -r1.107 src/sys/arch/xen/conf/files.xen
cvs rdiff -u -r0 -r1.1 src/sys/arch/xen/x86/xen_pmap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/x86/include/pmap.h
diff -u src/sys/arch/x86/include/pmap.h:1.29 src/sys/arch/x86/include/pmap.h:1.30
--- src/sys/arch/x86/include/pmap.h:1.29 Tue Feb 9 22:51:13 2010
+++ src/sys/arch/x86/include/pmap.h Mon May 10 18:46:58 2010
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.h,v 1.29 2010/02/09 22:51:13 jym Exp $ */
+/* $NetBSD: pmap.h,v 1.30 2010/05/10 18:46:58 dyoung Exp $ */
/*
*
@@ -228,6 +228,12 @@
void pmap_emap_remove(vaddr_t, vsize_t);
void pmap_emap_sync(bool);
+void pmap_map_ptes(struct pmap *, struct pmap **, pd_entry_t **,
+ pd_entry_t * const **);
+void pmap_unmap_ptes(struct pmap *, struct pmap *);
+
+int pmap_pdes_invalid(vaddr_t, pd_entry_t * const *, pd_entry_t *);
+
vaddr_t reserve_dumppages(vaddr_t); /* XXX: not a pmap fn */
void pmap_tlb_shootdown(pmap_t, vaddr_t, vaddr_t, pt_entry_t);
@@ -248,6 +254,12 @@
* inline functions
*/
+__inline static bool __unused
+pmap_pdes_valid(vaddr_t va, pd_entry_t * const *pdes, pd_entry_t *lastpde)
+{
+ return pmap_pdes_invalid(va, pdes, lastpde) == 0;
+}
+
/*
* pmap_update_pg: flush one page from the TLB (or flush the whole thing
* if hardware doesn't support one-page flushing)
@@ -401,17 +413,17 @@
/* Xen helpers to change bits of a pte */
#define XPMAP_UPDATE_DIRECT 1 /* Update direct map entry flags too */
+paddr_t vtomach(vaddr_t);
+#define vtomfn(va) (vtomach(va) >> PAGE_SHIFT)
+
+#endif /* XEN */
+
/* pmap functions with machine addresses */
void pmap_kenter_ma(vaddr_t, paddr_t, vm_prot_t, u_int);
int pmap_enter_ma(struct pmap *, vaddr_t, paddr_t, paddr_t,
vm_prot_t, u_int, int);
bool pmap_extract_ma(pmap_t, vaddr_t, paddr_t *);
-paddr_t vtomach(vaddr_t);
-#define vtomfn(va) (vtomach(va) >> PAGE_SHIFT)
-
-#endif /* XEN */
-
/*
* Hooks for the pool allocator.
*/
Index: src/sys/arch/x86/x86/bus_space.c
diff -u src/sys/arch/x86/x86/bus_space.c:1.28 src/sys/arch/x86/x86/bus_space.c:1.29
--- src/sys/arch/x86/x86/bus_space.c:1.28 Wed Apr 28 20:27:36 2010
+++ src/sys/arch/x86/x86/bus_space.c Mon May 10 18:46:58 2010
@@ -1,4 +1,4 @@
-/* $NetBSD: bus_space.c,v 1.28 2010/04/28 20:27:36 dyoung Exp $ */
+/* $NetBSD: bus_space.c,v 1.29 2010/05/10 18:46:58 dyoung Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: bus_space.c,v 1.28 2010/04/28 20:27:36 dyoung Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bus_space.c,v 1.29 2010/05/10 18:46:58 dyoung Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -48,9 +48,6 @@
#ifdef XEN
#include <xen/hypervisor.h>
-#include <xen/xenpmap.h>
-
-#define pmap_extract(a, b, c) pmap_extract_ma(a, b, c)
#endif
/*
@@ -339,11 +336,7 @@
*bshp = (bus_space_handle_t)(sva + (bpa & PGOFSET));
for (va = sva; pa != endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
-#ifdef XEN
pmap_kenter_ma(va, pa, VM_PROT_READ | VM_PROT_WRITE, pmapflags);
-#else
- pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, pmapflags);
-#endif /* XEN */
}
pmap_update(pmap_kernel());
@@ -395,7 +388,7 @@
}
#endif
- if (pmap_extract(pmap_kernel(), va, &bpa) == FALSE) {
+ if (pmap_extract_ma(pmap_kernel(), va, &bpa) == FALSE) {
panic("_x86_memio_unmap:"
" wrong virtual address");
}
@@ -447,7 +440,7 @@
panic("x86_memio_unmap: overflow");
#endif
- (void) pmap_extract(pmap_kernel(), va, &bpa);
+ (void) pmap_extract_ma(pmap_kernel(), va, &bpa);
bpa += (bsh & PGOFSET);
pmap_kremove(va, endva - va);
Index: src/sys/arch/x86/x86/pmap.c
diff -u src/sys/arch/x86/x86/pmap.c:1.108 src/sys/arch/x86/x86/pmap.c:1.109
--- src/sys/arch/x86/x86/pmap.c:1.108 Tue May 4 23:27:14 2010
+++ src/sys/arch/x86/x86/pmap.c Mon May 10 18:46:58 2010
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.108 2010/05/04 23:27:14 jym Exp $ */
+/* $NetBSD: pmap.c,v 1.109 2010/05/10 18:46:58 dyoung Exp $ */
/*
* Copyright (c) 2007 Manuel Bouyer.
@@ -149,7 +149,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.108 2010/05/04 23:27:14 jym Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.109 2010/05/10 18:46:58 dyoung Exp $");
#include "opt_user_ldt.h"
#include "opt_lockdebug.h"
@@ -531,6 +531,8 @@
static pt_entry_t *csrc_pte, *cdst_pte, *zero_pte, *ptp_pte, *early_zero_pte;
static char *csrcp, *cdstp, *zerop, *ptpp, *early_zerop;
+int pmap_enter_default(pmap_t, vaddr_t, paddr_t, vm_prot_t, u_int);
+
/*
* pool and cache that PDPs are allocated from
*/
@@ -580,8 +582,6 @@
pd_entry_t * const *);
static bool pmap_is_curpmap(struct pmap *);
static bool pmap_is_active(struct pmap *, struct cpu_info *, bool);
-static void pmap_map_ptes(struct pmap *, struct pmap **,
- pt_entry_t **, pd_entry_t * const **);
static bool pmap_remove_pte(struct pmap *, struct vm_page *,
pt_entry_t *, vaddr_t,
struct pv_entry **);
@@ -589,13 +589,8 @@
vaddr_t, vaddr_t, vaddr_t,
struct pv_entry **);
-static void pmap_unmap_ptes(struct pmap *, struct pmap *);
static void pmap_unmap_apdp(void);
static bool pmap_get_physpage(vaddr_t, int, paddr_t *);
-static int pmap_pdes_invalid(vaddr_t, pd_entry_t * const *,
- pd_entry_t *);
-#define pmap_pdes_valid(va, pdes, lastpde) \
- (pmap_pdes_invalid((va), (pdes), (lastpde)) == 0)
static void pmap_alloc_level(pd_entry_t * const *, vaddr_t, int,
long *);
@@ -781,7 +776,7 @@
* => must be undone with pmap_unmap_ptes before returning
*/
-static void
+void
pmap_map_ptes(struct pmap *pmap, struct pmap **pmap2,
pd_entry_t **ptepp, pd_entry_t * const **pdeppp)
{
@@ -914,7 +909,7 @@
* pmap_unmap_ptes: unlock the PTE mapping of "pmap"
*/
-static void
+void
pmap_unmap_ptes(struct pmap *pmap, struct pmap *pmap2)
{
@@ -1122,47 +1117,7 @@
}
}
-#ifdef XEN
-/*
- * pmap_kenter_ma: enter a kernel mapping without R/M (pv_entry) tracking
- *
- * => no need to lock anything, assume va is already allocated
- * => should be faster than normal pmap enter function
- * => we expect a MACHINE address
- */
-
-void
-pmap_kenter_ma(vaddr_t va, paddr_t ma, vm_prot_t prot, u_int flags)
-{
- pt_entry_t *pte, opte, npte;
-
- if (va < VM_MIN_KERNEL_ADDRESS)
- pte = vtopte(va);
- else
- pte = kvtopte(va);
-
- npte = ma | ((prot & VM_PROT_WRITE) ? PG_RW : PG_RO) |
- PG_V | PG_k;
- if (flags & PMAP_NOCACHE)
- npte |= PG_N;
-
- if ((cpu_feature[2] & CPUID_NOX) && !(prot & VM_PROT_EXECUTE))
- npte |= PG_NX;
-
- opte = pmap_pte_testset (pte, npte); /* zap! */
-
- if (pmap_valid_entry(opte)) {
-#if defined(MULTIPROCESSOR)
- kpreempt_disable();
- pmap_tlb_shootdown(pmap_kernel(), va, 0, opte);
- kpreempt_enable();
-#else
- /* Don't bother deferring in the single CPU case. */
- pmap_update_pg(va);
-#endif
- }
-}
-#endif /* XEN */
+__weak_alias(pmap_kenter_ma, pmap_kenter_pa);
#if defined(__x86_64__)
/*
@@ -2883,7 +2838,7 @@
* some misc. functions
*/
-static int
+int
pmap_pdes_invalid(vaddr_t va, pd_entry_t * const *pdes, pd_entry_t *lastpde)
{
int i;
@@ -2977,39 +2932,9 @@
return (0);
}
-#ifdef XEN
-/*
- * pmap_extract_ma: extract a MA for the given VA
- */
+__weak_alias(pmap_extract_ma, pmap_extract);
-bool
-pmap_extract_ma(struct pmap *pmap, vaddr_t va, paddr_t *pap)
-{
- pt_entry_t *ptes, pte;
- pd_entry_t pde;
- pd_entry_t * const *pdes;
- struct pmap *pmap2;
-
- kpreempt_disable();
- pmap_map_ptes(pmap, &pmap2, &ptes, &pdes);
- if (!pmap_pdes_valid(va, pdes, &pde)) {
- pmap_unmap_ptes(pmap, pmap2);
- kpreempt_enable();
- return false;
- }
-
- pte = ptes[pl1_i(va)];
- pmap_unmap_ptes(pmap, pmap2);
- kpreempt_enable();
-
- if (__predict_true((pte & PG_V) != 0)) {
- if (pap != NULL)
- *pap = (pte & PG_FRAME) | (va & (NBPD_L1 - 1));
- return true;
- }
-
- return false;
-}
+#ifdef XEN
/*
* vtomach: virtual address to machine address. For use by
@@ -3028,8 +2953,6 @@
#endif /* XEN */
-
-
/*
* pmap_virtual_space: used during bootup [pmap_steal_memory] to
* determine the bounds of the kernel virtual addess space.
@@ -3985,24 +3908,25 @@
* defined as macro in pmap.h
*/
+__weak_alias(pmap_enter, pmap_enter_default);
+
+int
+pmap_enter_default(pmap_t pmap, vaddr_t va, paddr_t pa, vm_prot_t prot,
+ u_int flags)
+{
+ return pmap_enter_ma(pmap, va, pa, pa, prot, flags, 0);
+}
+
/*
* pmap_enter: enter a mapping into a pmap
*
* => must be done "now" ... no lazy-evaluation
* => we set pmap => pv_head locking
*/
-#ifdef XEN
int
pmap_enter_ma(struct pmap *pmap, vaddr_t va, paddr_t ma, paddr_t pa,
vm_prot_t prot, u_int flags, int domid)
{
-#else /* XEN */
-int
-pmap_enter(struct pmap *pmap, vaddr_t va, paddr_t pa, vm_prot_t prot,
- u_int flags)
-{
- paddr_t ma = pa;
-#endif /* XEN */
pt_entry_t *ptes, opte, npte;
pt_entry_t *ptep;
pd_entry_t * const *pdes;
@@ -4214,22 +4138,6 @@
return error;
}
-#ifdef XEN
-int
-pmap_enter(struct pmap *pmap, vaddr_t va, paddr_t pa, vm_prot_t prot, u_int flags)
-{
- paddr_t ma;
-
- if (__predict_false(pa < pmap_pa_start || pmap_pa_end <= pa)) {
- ma = pa; /* XXX hack */
- } else {
- ma = xpmap_ptom(pa);
- }
-
- return pmap_enter_ma(pmap, va, ma, pa, prot, flags, DOMID_SELF);
-}
-#endif /* XEN */
-
static bool
pmap_get_physpage(vaddr_t va, int level, paddr_t *paddrp)
{
Index: src/sys/arch/xen/conf/files.xen
diff -u src/sys/arch/xen/conf/files.xen:1.106 src/sys/arch/xen/conf/files.xen:1.107
--- src/sys/arch/xen/conf/files.xen:1.106 Tue Nov 3 05:23:28 2009
+++ src/sys/arch/xen/conf/files.xen Mon May 10 18:46:58 2010
@@ -1,4 +1,4 @@
-# $NetBSD: files.xen,v 1.106 2009/11/03 05:23:28 dyoung Exp $
+# $NetBSD: files.xen,v 1.107 2010/05/10 18:46:58 dyoung Exp $
# NetBSD: files.x86,v 1.10 2003/10/08 17:30:00 bouyer Exp
# NetBSD: files.i386,v 1.254 2004/03/25 23:32:10 jmc Exp
@@ -106,6 +106,7 @@
# file arch/x86/x86/mtrr_i686.c mtrr
file arch/x86/x86/syscall.c
file arch/xen/x86/x86_xpmap.c
+file arch/xen/x86/xen_pmap.c
file arch/xen/x86/xen_intr.c
file arch/xen/x86/xenfunc.c
Added files:
Index: src/sys/arch/xen/x86/xen_pmap.c
diff -u /dev/null src/sys/arch/xen/x86/xen_pmap.c:1.1
--- /dev/null Mon May 10 18:46:59 2010
+++ src/sys/arch/xen/x86/xen_pmap.c Mon May 10 18:46:59 2010
@@ -0,0 +1,245 @@
+/*
+ * Copyright (c) 2007 Manuel Bouyer.
+ *
+ * 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 AUTHOR ``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 AUTHOR 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.
+ *
+ */
+
+/*
+ * Copyright (c) 2006 Mathieu Ropert <[email protected]>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ *
+ * Copyright (c) 1997 Charles D. Cranor and Washington University.
+ * All rights reserved.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Charles D. Cranor and
+ * Washington University.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+/*
+ * Copyright 2001 (c) Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Frank van der Linden for Wasabi Systems, Inc.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed for the NetBSD Project by
+ * Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: xen_pmap.c,v 1.1 2010/05/10 18:46:59 dyoung Exp $");
+
+#include "opt_user_ldt.h"
+#include "opt_lockdebug.h"
+#include "opt_multiprocessor.h"
+#include "opt_xen.h"
+#if !defined(__x86_64__)
+#include "opt_kstack_dr0.h"
+#endif /* !defined(__x86_64__) */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/pool.h>
+#include <sys/kernel.h>
+#include <sys/atomic.h>
+#include <sys/cpu.h>
+#include <sys/intr.h>
+#include <sys/xcall.h>
+
+#include <uvm/uvm.h>
+
+#include <dev/isa/isareg.h>
+
+#include <machine/specialreg.h>
+#include <machine/gdt.h>
+#include <machine/isa_machdep.h>
+#include <machine/cpuvar.h>
+
+#include <x86/pmap.h>
+#include <x86/pmap_pv.h>
+
+#include <x86/i82489reg.h>
+#include <x86/i82489var.h>
+
+#ifdef XEN
+#include <xen/xen3-public/xen.h>
+#include <xen/hypervisor.h>
+#endif
+
+/* flag to be used for kernel mappings: PG_u on Xen/amd64, 0 otherwise */
+#if defined(XEN) && defined(__x86_64__)
+#define PG_k PG_u
+#else
+#define PG_k 0
+#endif
+
+extern paddr_t pmap_pa_start; /* PA of first physical page for this domain */
+extern paddr_t pmap_pa_end; /* PA of last physical page for this domain */
+
+int
+pmap_enter(struct pmap *pmap, vaddr_t va, paddr_t pa, vm_prot_t prot, u_int flags)
+{
+ paddr_t ma;
+
+ if (__predict_false(pa < pmap_pa_start || pmap_pa_end <= pa)) {
+ ma = pa; /* XXX hack */
+ } else {
+ ma = xpmap_ptom(pa);
+ }
+
+ return pmap_enter_ma(pmap, va, ma, pa, prot, flags, DOMID_SELF);
+}
+
+/*
+ * pmap_kenter_ma: enter a kernel mapping without R/M (pv_entry) tracking
+ *
+ * => no need to lock anything, assume va is already allocated
+ * => should be faster than normal pmap enter function
+ * => we expect a MACHINE address
+ */
+
+void
+pmap_kenter_ma(vaddr_t va, paddr_t ma, vm_prot_t prot, u_int flags)
+{
+ pt_entry_t *pte, opte, npte;
+
+ if (va < VM_MIN_KERNEL_ADDRESS)
+ pte = vtopte(va);
+ else
+ pte = kvtopte(va);
+
+ npte = ma | ((prot & VM_PROT_WRITE) ? PG_RW : PG_RO) |
+ PG_V | PG_k;
+ if (flags & PMAP_NOCACHE)
+ npte |= PG_N;
+
+ if ((cpu_feature[2] & CPUID_NOX) && !(prot & VM_PROT_EXECUTE))
+ npte |= PG_NX;
+
+ opte = pmap_pte_testset (pte, npte); /* zap! */
+
+ if (pmap_valid_entry(opte)) {
+#if defined(MULTIPROCESSOR)
+ kpreempt_disable();
+ pmap_tlb_shootdown(pmap_kernel(), va, 0, opte);
+ kpreempt_enable();
+#else
+ /* Don't bother deferring in the single CPU case. */
+ pmap_update_pg(va);
+#endif
+ }
+}
+
+/*
+ * pmap_extract_ma: extract a MA for the given VA
+ */
+
+bool
+pmap_extract_ma(struct pmap *pmap, vaddr_t va, paddr_t *pap)
+{
+ pt_entry_t *ptes, pte;
+ pd_entry_t pde;
+ pd_entry_t * const *pdes;
+ struct pmap *pmap2;
+
+ kpreempt_disable();
+ pmap_map_ptes(pmap, &pmap2, &ptes, &pdes);
+ if (!pmap_pdes_valid(va, pdes, &pde)) {
+ pmap_unmap_ptes(pmap, pmap2);
+ kpreempt_enable();
+ return false;
+ }
+
+ pte = ptes[pl1_i(va)];
+ pmap_unmap_ptes(pmap, pmap2);
+ kpreempt_enable();
+
+ if (__predict_true((pte & PG_V) != 0)) {
+ if (pap != NULL)
+ *pap = (pte & PG_FRAME) | (va & (NBPD_L1 - 1));
+ return true;
+ }
+
+ return false;
+}
