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#ifndef _ASM_X86_KVM_PARA_H

#define _ASM_X86_KVM_PARA_H

#include <linux/types.h>

#include <asm/hyperv.h>

/* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx.  It

 * should be used to determine that a VM is running under KVM.

 */

#define KVM_CPUID_SIGNATURE        0x40000000

/* This CPUID returns a feature bitmap in eax.  Before enabling a particular

 * paravirtualization, the appropriate feature bit should be checked.

 */

#define KVM_CPUID_FEATURES        0x40000001

#define KVM_FEATURE_CLOCKSOURCE                0

#define KVM_FEATURE_NOP_IO_DELAY        1

#define KVM_FEATURE_MMU_OP                2

/* This indicates that the new set of kvmclock msrs

 * are available. The use of 0x11 and 0x12 is deprecated

 */

#define KVM_FEATURE_CLOCKSOURCE2        3

#define KVM_FEATURE_ASYNC_PF                4

#define KVM_FEATURE_STEAL_TIME                5

#define KVM_FEATURE_PV_EOI                6

/* The last 8 bits are used to indicate how to interpret the flags field

 * in pvclock structure. If no bits are set, all flags are ignored.

 */

#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT        24

#define MSR_KVM_WALL_CLOCK  0x11

#define MSR_KVM_SYSTEM_TIME 0x12

#define KVM_MSR_ENABLED 1

/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */

#define MSR_KVM_WALL_CLOCK_NEW  0x4b564d00

#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01

#define MSR_KVM_ASYNC_PF_EN 0x4b564d02

#define MSR_KVM_STEAL_TIME  0x4b564d03

#define MSR_KVM_PV_EOI_EN      0x4b564d04

struct kvm_steal_time {

        __u64 steal;

        __u32 version;

        __u32 flags;

        __u32 pad[12];

};

#define KVM_STEAL_ALIGNMENT_BITS 5

#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1)))

#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1)

#define KVM_MAX_MMU_OP_BATCH           32

#define KVM_ASYNC_PF_ENABLED                        (1 << 0)

#define KVM_ASYNC_PF_SEND_ALWAYS                (1 << 1)

/* Operations for KVM_HC_MMU_OP */

#define KVM_MMU_OP_WRITE_PTE            1

#define KVM_MMU_OP_FLUSH_TLB                2

#define KVM_MMU_OP_RELEASE_PT                3

/* Payload for KVM_HC_MMU_OP */

struct kvm_mmu_op_header {

        __u32 op;

        __u32 pad;

};

struct kvm_mmu_op_write_pte {

        struct kvm_mmu_op_header header;

        __u64 pte_phys;

        __u64 pte_val;

};

struct kvm_mmu_op_flush_tlb {

        struct kvm_mmu_op_header header;

};

struct kvm_mmu_op_release_pt {

        struct kvm_mmu_op_header header;

        __u64 pt_phys;

};

#define KVM_PV_REASON_PAGE_NOT_PRESENT 1

#define KVM_PV_REASON_PAGE_READY 2

struct kvm_vcpu_pv_apf_data {

        __u32 reason;

        __u8 pad[60];

        __u32 enabled;

};

#define KVM_PV_EOI_BIT 0

#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT)

#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK

#define KVM_PV_EOI_DISABLED 0x0

#endif /* _ASM_X86_KVM_PARA_H */