linux-headers/asm-x86/kvm_para.h

   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
  25 /* The last 8 bits are used to indicate how to interpret the flags field
  26  * in pvclock structure. If no bits are set, all flags are ignored.
  27  */
  28 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT      24
  29
  30 #define MSR_KVM_WALL_CLOCK  0x11
  31 #define MSR_KVM_SYSTEM_TIME 0x12
  32
  33 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */
  34 #define MSR_KVM_WALL_CLOCK_NEW  0x4b564d00
  35 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01
  36 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02
  37
  38 #define KVM_MAX_MMU_OP_BATCH           32
  39
  40 #define KVM_ASYNC_PF_ENABLED                    (1 << 0)
  41 #define KVM_ASYNC_PF_SEND_ALWAYS                (1 << 1)
  42
  43 /* Operations for KVM_HC_MMU_OP */
  44 #define KVM_MMU_OP_WRITE_PTE            1
  45 #define KVM_MMU_OP_FLUSH_TLB            2
  46 #define KVM_MMU_OP_RELEASE_PT           3
  47
  48 /* Payload for KVM_HC_MMU_OP */
  49 struct kvm_mmu_op_header {
  50         __u32 op;
  51         __u32 pad;
  52 };
  53
  54 struct kvm_mmu_op_write_pte {
  55         struct kvm_mmu_op_header header;
  56         __u64 pte_phys;
  57         __u64 pte_val;
  58 };
  59
  60 struct kvm_mmu_op_flush_tlb {
  61         struct kvm_mmu_op_header header;
  62 };
  63
  64 struct kvm_mmu_op_release_pt {
  65         struct kvm_mmu_op_header header;
  66         __u64 pt_phys;
  67 };
  68
  69 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1
  70 #define KVM_PV_REASON_PAGE_READY 2
  71
  72 struct kvm_vcpu_pv_apf_data {
  73         __u32 reason;
  74         __u8 pad[60];
  75         __u32 enabled;
  76 };
  77
  78
  79 #endif /* _ASM_X86_KVM_PARA_H */