1 /****************************************************************************** 2 * tools/xenpaging/xenpaging.h 3 * 4 * Xen domain paging. 5 * 6 * Copyright (c) 2009 Citrix Systems, Inc. (Patrick Colp) 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; If not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 23 #ifndef __XEN_PAGING2_H__ 24 #define __XEN_PAGING2_H__ 25 26 27 #include <xenevtchn.h> 28 #define XC_WANT_COMPAT_MAP_FOREIGN_API 29 #include <xenctrl.h> 30 #include <xc_private.h> 31 #include <xen/event_channel.h> 32 #include <xen/vm_event.h> 33 34 #define XENPAGING_PAGEIN_QUEUE_SIZE 64 35 36 struct vm_event { 37 domid_t domain_id; 38 xenevtchn_handle *xce_handle; 39 int port; 40 vm_event_back_ring_t back_ring; 41 uint32_t evtchn_port; 42 void *ring_page; 43 }; 44 45 struct xenpaging { 46 xc_interface *xc_handle; 47 struct xs_handle *xs_handle; 48 49 unsigned long *bitmap; 50 51 unsigned long *slot_to_gfn; 52 int *gfn_to_slot; 53 54 void *paging_buffer; 55 56 struct vm_event vm_event; 57 int fd; 58 /* number of pages for which data structures were allocated */ 59 int max_pages; 60 int num_paged_out; 61 int target_tot_pages; 62 int policy_mru_size; 63 int use_poll_timeout; 64 int debug; 65 int stack_count; 66 int *free_slot_stack; 67 unsigned long pagein_queue[XENPAGING_PAGEIN_QUEUE_SIZE]; 68 }; 69 70 extern void create_page_in_thread(struct xenpaging *paging); 71 extern void page_in_trigger(void); 72 73 #endif // __XEN_PAGING_H__ 74 75 76 /* 77 * Local variables: 78 * mode: C 79 * c-file-style: "BSD" 80 * c-basic-offset: 4 81 * tab-width: 4 82 * indent-tabs-mode: nil 83 * End: 84 */ 85