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 #define KVM_SIGNATURE "KVMKVMKVM\0\0\0" 12 13 /* This CPUID returns two feature bitmaps in eax, edx. Before enabling 14 * a particular paravirtualization, the appropriate feature bit should 15 * be checked in eax. The performance hint feature bit should be checked 16 * in edx. 17 */ 18 #define KVM_CPUID_FEATURES 0x40000001 19 #define KVM_FEATURE_CLOCKSOURCE 0 20 #define KVM_FEATURE_NOP_IO_DELAY 1 21 #define KVM_FEATURE_MMU_OP 2 22 /* This indicates that the new set of kvmclock msrs 23 * are available. The use of 0x11 and 0x12 is deprecated 24 */ 25 #define KVM_FEATURE_CLOCKSOURCE2 3 26 #define KVM_FEATURE_ASYNC_PF 4 27 #define KVM_FEATURE_STEAL_TIME 5 28 #define KVM_FEATURE_PV_EOI 6 29 #define KVM_FEATURE_PV_UNHALT 7 30 #define KVM_FEATURE_PV_TLB_FLUSH 9 31 #define KVM_FEATURE_ASYNC_PF_VMEXIT 10 32 #define KVM_FEATURE_PV_SEND_IPI 11 33 #define KVM_FEATURE_POLL_CONTROL 12 34 #define KVM_FEATURE_PV_SCHED_YIELD 13 35 #define KVM_FEATURE_ASYNC_PF_INT 14 36 #define KVM_FEATURE_MSI_EXT_DEST_ID 15 37 #define KVM_FEATURE_HC_MAP_GPA_RANGE 16 38 #define KVM_FEATURE_MIGRATION_CONTROL 17 39 40 #define KVM_HINTS_REALTIME 0 41 42 /* The last 8 bits are used to indicate how to interpret the flags field 43 * in pvclock structure. If no bits are set, all flags are ignored. 44 */ 45 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 46 47 #define MSR_KVM_WALL_CLOCK 0x11 48 #define MSR_KVM_SYSTEM_TIME 0x12 49 50 #define KVM_MSR_ENABLED 1 51 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 52 #define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 53 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 54 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 55 #define MSR_KVM_STEAL_TIME 0x4b564d03 56 #define MSR_KVM_PV_EOI_EN 0x4b564d04 57 #define MSR_KVM_POLL_CONTROL 0x4b564d05 58 #define MSR_KVM_ASYNC_PF_INT 0x4b564d06 59 #define MSR_KVM_ASYNC_PF_ACK 0x4b564d07 60 #define MSR_KVM_MIGRATION_CONTROL 0x4b564d08 61 62 struct kvm_steal_time { 63 __u64 steal; 64 __u32 version; 65 __u32 flags; 66 __u8 preempted; 67 __u8 u8_pad[3]; 68 __u32 pad[11]; 69 }; 70 71 #define KVM_VCPU_PREEMPTED (1 << 0) 72 #define KVM_VCPU_FLUSH_TLB (1 << 1) 73 74 #define KVM_CLOCK_PAIRING_WALLCLOCK 0 75 struct kvm_clock_pairing { 76 __s64 sec; 77 __s64 nsec; 78 __u64 tsc; 79 __u32 flags; 80 __u32 pad[9]; 81 }; 82 83 #define KVM_STEAL_ALIGNMENT_BITS 5 84 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 85 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 86 87 #define KVM_MAX_MMU_OP_BATCH 32 88 89 #define KVM_ASYNC_PF_ENABLED (1 << 0) 90 #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 91 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 92 #define KVM_ASYNC_PF_DELIVERY_AS_INT (1 << 3) 93 94 /* MSR_KVM_ASYNC_PF_INT */ 95 #define KVM_ASYNC_PF_VEC_MASK GENMASK(7, 0) 96 97 /* MSR_KVM_MIGRATION_CONTROL */ 98 #define KVM_MIGRATION_READY (1 << 0) 99 100 /* KVM_HC_MAP_GPA_RANGE */ 101 #define KVM_MAP_GPA_RANGE_PAGE_SZ_4K 0 102 #define KVM_MAP_GPA_RANGE_PAGE_SZ_2M (1 << 0) 103 #define KVM_MAP_GPA_RANGE_PAGE_SZ_1G (1 << 1) 104 #define KVM_MAP_GPA_RANGE_ENC_STAT(n) (n << 4) 105 #define KVM_MAP_GPA_RANGE_ENCRYPTED KVM_MAP_GPA_RANGE_ENC_STAT(1) 106 #define KVM_MAP_GPA_RANGE_DECRYPTED KVM_MAP_GPA_RANGE_ENC_STAT(0) 107 108 /* Operations for KVM_HC_MMU_OP */ 109 #define KVM_MMU_OP_WRITE_PTE 1 110 #define KVM_MMU_OP_FLUSH_TLB 2 111 #define KVM_MMU_OP_RELEASE_PT 3 112 113 /* Payload for KVM_HC_MMU_OP */ 114 struct kvm_mmu_op_header { 115 __u32 op; 116 __u32 pad; 117 }; 118 119 struct kvm_mmu_op_write_pte { 120 struct kvm_mmu_op_header header; 121 __u64 pte_phys; 122 __u64 pte_val; 123 }; 124 125 struct kvm_mmu_op_flush_tlb { 126 struct kvm_mmu_op_header header; 127 }; 128 129 struct kvm_mmu_op_release_pt { 130 struct kvm_mmu_op_header header; 131 __u64 pt_phys; 132 }; 133 134 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1 135 #define KVM_PV_REASON_PAGE_READY 2 136 137 struct kvm_vcpu_pv_apf_data { 138 /* Used for 'page not present' events delivered via #PF */ 139 __u32 flags; 140 141 /* Used for 'page ready' events delivered via interrupt notification */ 142 __u32 token; 143 144 __u8 pad[56]; 145 __u32 enabled; 146 }; 147 148 #define KVM_PV_EOI_BIT 0 149 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 150 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 151 #define KVM_PV_EOI_DISABLED 0x0 152 153 #endif /* _UAPI_ASM_X86_KVM_PARA_H */ 154