Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-5.2-pull-reques...
[qemu.git] / include / standard-headers / asm-x86 / kvm_para.h
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _ASM_X86_KVM_PARA_H
3 #define _ASM_X86_KVM_PARA_H
4
5 #include "standard-headers/linux/types.h"
6
7 /* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx. It
8 * should be used to determine that a VM is running under KVM.
9 */
10 #define KVM_CPUID_SIGNATURE 0x40000000
11
12 /* This CPUID returns two feature bitmaps in eax, edx. Before enabling
13 * a particular paravirtualization, the appropriate feature bit should
14 * be checked in eax. The performance hint feature bit should be checked
15 * in edx.
16 */
17 #define KVM_CPUID_FEATURES 0x40000001
18 #define KVM_FEATURE_CLOCKSOURCE 0
19 #define KVM_FEATURE_NOP_IO_DELAY 1
20 #define KVM_FEATURE_MMU_OP 2
21 /* This indicates that the new set of kvmclock msrs
22 * are available. The use of 0x11 and 0x12 is deprecated
23 */
24 #define KVM_FEATURE_CLOCKSOURCE2 3
25 #define KVM_FEATURE_ASYNC_PF 4
26 #define KVM_FEATURE_STEAL_TIME 5
27 #define KVM_FEATURE_PV_EOI 6
28 #define KVM_FEATURE_PV_UNHALT 7
29 #define KVM_FEATURE_PV_TLB_FLUSH 9
30 #define KVM_FEATURE_ASYNC_PF_VMEXIT 10
31 #define KVM_FEATURE_PV_SEND_IPI 11
32 #define KVM_FEATURE_POLL_CONTROL 12
33 #define KVM_FEATURE_PV_SCHED_YIELD 13
34 #define KVM_FEATURE_ASYNC_PF_INT 14
35
36 #define KVM_HINTS_REALTIME 0
37
38 /* The last 8 bits are used to indicate how to interpret the flags field
39 * in pvclock structure. If no bits are set, all flags are ignored.
40 */
41 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24
42
43 #define MSR_KVM_WALL_CLOCK 0x11
44 #define MSR_KVM_SYSTEM_TIME 0x12
45
46 #define KVM_MSR_ENABLED 1
47 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */
48 #define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00
49 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01
50 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02
51 #define MSR_KVM_STEAL_TIME 0x4b564d03
52 #define MSR_KVM_PV_EOI_EN 0x4b564d04
53 #define MSR_KVM_POLL_CONTROL 0x4b564d05
54 #define MSR_KVM_ASYNC_PF_INT 0x4b564d06
55 #define MSR_KVM_ASYNC_PF_ACK 0x4b564d07
56
57 struct kvm_steal_time {
58 uint64_t steal;
59 uint32_t version;
60 uint32_t flags;
61 uint8_t preempted;
62 uint8_t uint8_t_pad[3];
63 uint32_t pad[11];
64 };
65
66 #define KVM_VCPU_PREEMPTED (1 << 0)
67 #define KVM_VCPU_FLUSH_TLB (1 << 1)
68
69 #define KVM_CLOCK_PAIRING_WALLCLOCK 0
70 struct kvm_clock_pairing {
71 int64_t sec;
72 int64_t nsec;
73 uint64_t tsc;
74 uint32_t flags;
75 uint32_t pad[9];
76 };
77
78 #define KVM_STEAL_ALIGNMENT_BITS 5
79 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1)))
80 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1)
81
82 #define KVM_MAX_MMU_OP_BATCH 32
83
84 #define KVM_ASYNC_PF_ENABLED (1 << 0)
85 #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1)
86 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2)
87 #define KVM_ASYNC_PF_DELIVERY_AS_INT (1 << 3)
88
89 /* MSR_KVM_ASYNC_PF_INT */
90 #define KVM_ASYNC_PF_VEC_MASK GENMASK(7, 0)
91
92
93 /* Operations for KVM_HC_MMU_OP */
94 #define KVM_MMU_OP_WRITE_PTE 1
95 #define KVM_MMU_OP_FLUSH_TLB 2
96 #define KVM_MMU_OP_RELEASE_PT 3
97
98 /* Payload for KVM_HC_MMU_OP */
99 struct kvm_mmu_op_header {
100 uint32_t op;
101 uint32_t pad;
102 };
103
104 struct kvm_mmu_op_write_pte {
105 struct kvm_mmu_op_header header;
106 uint64_t pte_phys;
107 uint64_t pte_val;
108 };
109
110 struct kvm_mmu_op_flush_tlb {
111 struct kvm_mmu_op_header header;
112 };
113
114 struct kvm_mmu_op_release_pt {
115 struct kvm_mmu_op_header header;
116 uint64_t pt_phys;
117 };
118
119 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1
120 #define KVM_PV_REASON_PAGE_READY 2
121
122 struct kvm_vcpu_pv_apf_data {
123 /* Used for 'page not present' events delivered via #PF */
124 uint32_t flags;
125
126 /* Used for 'page ready' events delivered via interrupt notification */
127 uint32_t token;
128
129 uint8_t pad[56];
130 uint32_t enabled;
131 };
132
133 #define KVM_PV_EOI_BIT 0
134 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT)
135 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK
136 #define KVM_PV_EOI_DISABLED 0x0
137
138 #endif /* _ASM_X86_KVM_PARA_H */