1 /******************************************************************************
2 * arch-x86_64.h
3 *
4 * Guest OS interface to x86 64-bit Xen.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Copyright (c) 2004-2006, K A Fraser
25 */
26
27 #include "arch-x86/xen.h"
28
29 /*
30 * ` enum neg_errnoval
31 * ` HYPERVISOR_set_callbacks(unsigned long event_selector,
32 * ` unsigned long event_address,
33 * ` unsigned long failsafe_selector,
34 * ` unsigned long failsafe_address);
35 * `
36 * Register for callbacks on events. When an event (from an event
37 * channel) occurs, event_address is used as the value of eip.
38 *
39 * A similar callback occurs if the segment selectors are invalid.
40 * failsafe_address is used as the value of eip.
41 *
42 * On x86_64, event_selector and failsafe_selector are ignored (???).
43 */
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