PPC: rename msync to msync_4xx
[qemu.git] / linux-headers / asm-powerpc / kvm_para.h
1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20 #ifndef __POWERPC_KVM_PARA_H__
21 #define __POWERPC_KVM_PARA_H__
22
23 #include <linux/types.h>
24
25 /*
26 * Additions to this struct must only occur at the end, and should be
27 * accompanied by a KVM_MAGIC_FEAT flag to advertise that they are present
28 * (albeit not necessarily relevant to the current target hardware platform).
29 *
30 * Struct fields are always 32 or 64 bit aligned, depending on them being 32
31 * or 64 bit wide respectively.
32 *
33 * See Documentation/virtual/kvm/ppc-pv.txt
34 */
35 struct kvm_vcpu_arch_shared {
36 __u64 scratch1;
37 __u64 scratch2;
38 __u64 scratch3;
39 __u64 critical; /* Guest may not get interrupts if == r1 */
40 __u64 sprg0;
41 __u64 sprg1;
42 __u64 sprg2;
43 __u64 sprg3;
44 __u64 srr0;
45 __u64 srr1;
46 __u64 dar; /* dear on BookE */
47 __u64 msr;
48 __u32 dsisr;
49 __u32 int_pending; /* Tells the guest if we have an interrupt */
50 __u32 sr[16];
51 __u32 mas0;
52 __u32 mas1;
53 __u64 mas7_3;
54 __u64 mas2;
55 __u32 mas4;
56 __u32 mas6;
57 __u32 esr;
58 __u32 pir;
59
60 /*
61 * SPRG4-7 are user-readable, so we can only keep these consistent
62 * between the shared area and the real registers when there's an
63 * intervening exit to KVM. This also applies to SPRG3 on some
64 * chips.
65 *
66 * This suffices for access by guest userspace, since in PR-mode
67 * KVM, an exit must occur when changing the guest's MSR[PR].
68 * If the guest kernel writes to SPRG3-7 via the shared area, it
69 * must also use the shared area for reading while in kernel space.
70 */
71 __u64 sprg4;
72 __u64 sprg5;
73 __u64 sprg6;
74 __u64 sprg7;
75 };
76
77 #define KVM_SC_MAGIC_R0 0x4b564d21 /* "KVM!" */
78 #define HC_VENDOR_KVM (42 << 16)
79 #define HC_EV_SUCCESS 0
80 #define HC_EV_UNIMPLEMENTED 12
81
82 #define KVM_FEATURE_MAGIC_PAGE 1
83
84 #define KVM_MAGIC_FEAT_SR (1 << 0)
85
86 /* MASn, ESR, PIR, and high SPRGs */
87 #define KVM_MAGIC_FEAT_MAS0_TO_SPRG7 (1 << 1)
88
89
90 #endif /* __POWERPC_KVM_PARA_H__ */