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TOMOYO Linux Cross Reference
Linux/arch/x86/include/uapi/asm/kvm_para.h

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  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 
 44 struct 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 */
 66 struct kvm_mmu_op_header {
 67         __u32 op;
 68         __u32 pad;
 69 };
 70 
 71 struct kvm_mmu_op_write_pte {
 72         struct kvm_mmu_op_header header;
 73         __u64 pte_phys;
 74         __u64 pte_val;
 75 };
 76 
 77 struct kvm_mmu_op_flush_tlb {
 78         struct kvm_mmu_op_header header;
 79 };
 80 
 81 struct 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 
 89 struct 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 

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