1#ifndef _UAPI_ASM_X86_KVM_PARA_H
2#define _UAPI_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
44struct kvm_steal_time {
45	__u64 steal;
46	__u32 version;
47	__u32 flags;
48	__u32 pad[12];
49};
50
51#define KVM_STEAL_ALIGNMENT_BITS 5
52#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1)))
53#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1)
54
55#define KVM_MAX_MMU_OP_BATCH           32
56
57#define KVM_ASYNC_PF_ENABLED			(1 << 0)
58#define KVM_ASYNC_PF_SEND_ALWAYS		(1 << 1)
59
60/* Operations for KVM_HC_MMU_OP */
61#define KVM_MMU_OP_WRITE_PTE            1
62#define KVM_MMU_OP_FLUSH_TLB	        2
63#define KVM_MMU_OP_RELEASE_PT	        3
64
65/* Payload for KVM_HC_MMU_OP */
66struct kvm_mmu_op_header {
67	__u32 op;
68	__u32 pad;
69};
70
71struct kvm_mmu_op_write_pte {
72	struct kvm_mmu_op_header header;
73	__u64 pte_phys;
74	__u64 pte_val;
75};
76
77struct kvm_mmu_op_flush_tlb {
78	struct kvm_mmu_op_header header;
79};
80
81struct kvm_mmu_op_release_pt {
82	struct kvm_mmu_op_header header;
83	__u64 pt_phys;
84};
85
86#define KVM_PV_REASON_PAGE_NOT_PRESENT 1
87#define KVM_PV_REASON_PAGE_READY 2
88
89struct kvm_vcpu_pv_apf_data {
90	__u32 reason;
91	__u8 pad[60];
92	__u32 enabled;
93};
94
95#define KVM_PV_EOI_BIT 0
96#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT)
97#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK
98#define KVM_PV_EOI_DISABLED 0x0
99
100
101#endif /* _UAPI_ASM_X86_KVM_PARA_H */
102