1 #ifndef _ASM_X86_KVM_PARA_H
2 #define _ASM_X86_KVM_PARA_H
3 
4 #include <linux/types.h>
5 #include <asm/hyperv.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 a feature bitmap in eax.  Before enabling a particular
13  * paravirtualization, the appropriate feature bit should be checked.
14  */
15 #define KVM_CPUID_FEATURES	0x40000001
16 #define KVM_FEATURE_CLOCKSOURCE		0
17 #define KVM_FEATURE_NOP_IO_DELAY	1
18 #define KVM_FEATURE_MMU_OP		2
19 /* This indicates that the new set of kvmclock msrs
20  * are available. The use of 0x11 and 0x12 is deprecated
21  */
22 #define KVM_FEATURE_CLOCKSOURCE2        3
23 #define KVM_FEATURE_ASYNC_PF		4
24 #define KVM_FEATURE_STEAL_TIME		5
25 #define KVM_FEATURE_PV_EOI		6
26 #define KVM_FEATURE_PV_UNHALT		7
27 
28 /* The last 8 bits are used to indicate how to interpret the flags field
29  * in pvclock structure. If no bits are set, all flags are ignored.
30  */
31 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT	24
32 
33 #define MSR_KVM_WALL_CLOCK  0x11
34 #define MSR_KVM_SYSTEM_TIME 0x12
35 
36 #define KVM_MSR_ENABLED 1
37 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */
38 #define MSR_KVM_WALL_CLOCK_NEW  0x4b564d00
39 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01
40 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02
41 #define MSR_KVM_STEAL_TIME  0x4b564d03
42 #define MSR_KVM_PV_EOI_EN      0x4b564d04
43 
44 struct kvm_steal_time {
45 	__u64 steal;
46 	__u32 version;
47 	__u32 flags;
48 	__u8  preempted;
49 	__u8  u8_pad[3];
50 	__u32 pad[11];
51 };
52 
53 #define KVM_CLOCK_PAIRING_WALLCLOCK 0
54 struct kvm_clock_pairing {
55 	__s64 sec;
56 	__s64 nsec;
57 	__u64 tsc;
58 	__u32 flags;
59 	__u32 pad[9];
60 };
61 
62 #define KVM_STEAL_ALIGNMENT_BITS 5
63 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1)))
64 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1)
65 
66 #define KVM_MAX_MMU_OP_BATCH           32
67 
68 #define KVM_ASYNC_PF_ENABLED			(1 << 0)
69 #define KVM_ASYNC_PF_SEND_ALWAYS		(1 << 1)
70 
71 /* Operations for KVM_HC_MMU_OP */
72 #define KVM_MMU_OP_WRITE_PTE            1
73 #define KVM_MMU_OP_FLUSH_TLB	        2
74 #define KVM_MMU_OP_RELEASE_PT	        3
75 
76 /* Payload for KVM_HC_MMU_OP */
77 struct kvm_mmu_op_header {
78 	__u32 op;
79 	__u32 pad;
80 };
81 
82 struct kvm_mmu_op_write_pte {
83 	struct kvm_mmu_op_header header;
84 	__u64 pte_phys;
85 	__u64 pte_val;
86 };
87 
88 struct kvm_mmu_op_flush_tlb {
89 	struct kvm_mmu_op_header header;
90 };
91 
92 struct kvm_mmu_op_release_pt {
93 	struct kvm_mmu_op_header header;
94 	__u64 pt_phys;
95 };
96 
97 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1
98 #define KVM_PV_REASON_PAGE_READY 2
99 
100 struct kvm_vcpu_pv_apf_data {
101 	__u32 reason;
102 	__u8 pad[60];
103 	__u32 enabled;
104 };
105 
106 #define KVM_PV_EOI_BIT 0
107 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT)
108 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK
109 #define KVM_PV_EOI_DISABLED 0x0
110 
111 
112 #endif /* _ASM_X86_KVM_PARA_H */
113