2 * Copyright (C) 2001-2004 Jakub Jermar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 /** @addtogroup xen32mm
35 #include <arch/mm/page.h>
36 #include <genarch/mm/page_pt.h>
37 #include <arch/mm/frame.h>
41 #include <arch/types.h>
45 #include <arch/interrupt.h>
50 #include <interrupt.h>
52 void page_arch_init(void)
54 if (config
.cpu_active
== 1) {
55 page_mapping_operations
= &pt_mapping_operations
;
56 AS_KERNEL
->page_table
= (pte_t
*) KA2PA(start_info
.ptl0
);
58 SET_PTL0_ADDRESS_ARCH(AS_KERNEL
->page_table
);
61 void page_fault(int n
, istate_t
*istate
)
68 if (istate
->error_word
& PFERR_CODE_RSVD
)
69 panic("Reserved bit set in page directory.\n");
71 if (istate
->error_word
& PFERR_CODE_RW
)
72 access
= PF_ACCESS_WRITE
;
74 access
= PF_ACCESS_READ
;
76 if (as_page_fault(page
, access
, istate
) == AS_PF_FAULT
) {
77 fault_if_from_uspace(istate
, "Page fault: %#x", page
);
79 PRINT_INFO_ERRCODE(istate
);
80 printf("page fault address: %#x\n", page
);
81 panic("page fault\n");