LXR linux/arch/x86/include/uapi/asm/kvm

   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