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

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _UAPI_ASM_X86_KVM_PARA_H
   3 #define _UAPI_ASM_X86_KVM_PARA_H
   4 
   5 #include <linux/types.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 two feature bitmaps in eax, edx. Before enabling
  13  * a particular paravirtualization, the appropriate feature bit should
  14  * be checked in eax. The performance hint feature bit should be checked
  15  * in edx.
  16  */
  17 #define KVM_CPUID_FEATURES      0x40000001
  18 #define KVM_FEATURE_CLOCKSOURCE         0
  19 #define KVM_FEATURE_NOP_IO_DELAY        1
  20 #define KVM_FEATURE_MMU_OP              2
  21 /* This indicates that the new set of kvmclock msrs
  22  * are available. The use of 0x11 and 0x12 is deprecated
  23  */
  24 #define KVM_FEATURE_CLOCKSOURCE2        3
  25 #define KVM_FEATURE_ASYNC_PF            4
  26 #define KVM_FEATURE_STEAL_TIME          5
  27 #define KVM_FEATURE_PV_EOI              6
  28 #define KVM_FEATURE_PV_UNHALT           7
  29 #define KVM_FEATURE_PV_TLB_FLUSH        9
  30 #define KVM_FEATURE_ASYNC_PF_VMEXIT     10
  31 #define KVM_FEATURE_PV_SEND_IPI 11
  32 #define KVM_FEATURE_POLL_CONTROL        12
  33 #define KVM_FEATURE_PV_SCHED_YIELD      13
  34 
  35 #define KVM_HINTS_REALTIME      0
  36 
  37 /* The last 8 bits are used to indicate how to interpret the flags field
  38  * in pvclock structure. If no bits are set, all flags are ignored.
  39  */
  40 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT      24
  41 
  42 #define MSR_KVM_WALL_CLOCK  0x11
  43 #define MSR_KVM_SYSTEM_TIME 0x12
  44 
  45 #define KVM_MSR_ENABLED 1
  46 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */
  47 #define MSR_KVM_WALL_CLOCK_NEW  0x4b564d00
  48 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01
  49 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02
  50 #define MSR_KVM_STEAL_TIME  0x4b564d03
  51 #define MSR_KVM_PV_EOI_EN      0x4b564d04
  52 #define MSR_KVM_POLL_CONTROL    0x4b564d05
  53 
  54 struct kvm_steal_time {
  55         __u64 steal;
  56         __u32 version;
  57         __u32 flags;
  58         __u8  preempted;
  59         __u8  u8_pad[3];
  60         __u32 pad[11];
  61 };
  62 
  63 #define KVM_VCPU_PREEMPTED          (1 << 0)
  64 #define KVM_VCPU_FLUSH_TLB          (1 << 1)
  65 
  66 #define KVM_CLOCK_PAIRING_WALLCLOCK 0
  67 struct kvm_clock_pairing {
  68         __s64 sec;
  69         __s64 nsec;
  70         __u64 tsc;
  71         __u32 flags;
  72         __u32 pad[9];
  73 };
  74 
  75 #define KVM_STEAL_ALIGNMENT_BITS 5
  76 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1)))
  77 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1)
  78 
  79 #define KVM_MAX_MMU_OP_BATCH           32
  80 
  81 #define KVM_ASYNC_PF_ENABLED                    (1 << 0)
  82 #define KVM_ASYNC_PF_SEND_ALWAYS                (1 << 1)
  83 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT      (1 << 2)
  84 
  85 /* Operations for KVM_HC_MMU_OP */
  86 #define KVM_MMU_OP_WRITE_PTE            1
  87 #define KVM_MMU_OP_FLUSH_TLB            2
  88 #define KVM_MMU_OP_RELEASE_PT           3
  89 
  90 /* Payload for KVM_HC_MMU_OP */
  91 struct kvm_mmu_op_header {
  92         __u32 op;
  93         __u32 pad;
  94 };
  95 
  96 struct kvm_mmu_op_write_pte {
  97         struct kvm_mmu_op_header header;
  98         __u64 pte_phys;
  99         __u64 pte_val;
 100 };
 101 
 102 struct kvm_mmu_op_flush_tlb {
 103         struct kvm_mmu_op_header header;
 104 };
 105 
 106 struct kvm_mmu_op_release_pt {
 107         struct kvm_mmu_op_header header;
 108         __u64 pt_phys;
 109 };
 110 
 111 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1
 112 #define KVM_PV_REASON_PAGE_READY 2
 113 
 114 struct kvm_vcpu_pv_apf_data {
 115         __u32 reason;
 116         __u8 pad[60];
 117         __u32 enabled;
 118 };
 119 
 120 #define KVM_PV_EOI_BIT 0
 121 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT)
 122 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK
 123 #define KVM_PV_EOI_DISABLED 0x0
 124 
 125 #endif /* _UAPI_ASM_X86_KVM_PARA_H */