arch/x86/include/uapi/asm/kvm_para.h

   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 */