1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _ASM_X86_KVM_PARA_H 3 #define _ASM_X86_KVM_PARA_H 4 5 #include "standard-headers/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 #define KVM_FEATURE_ASYNC_PF_INT 14 35 #define KVM_FEATURE_MSI_EXT_DEST_ID 15 36 #define KVM_FEATURE_HC_MAP_GPA_RANGE 16 37 #define KVM_FEATURE_MIGRATION_CONTROL 17 38 39 #define KVM_HINTS_REALTIME 0 40 41 /* The last 8 bits are used to indicate how to interpret the flags field 42 * in pvclock structure. If no bits are set, all flags are ignored. 43 */ 44 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 45 46 #define MSR_KVM_WALL_CLOCK 0x11 47 #define MSR_KVM_SYSTEM_TIME 0x12 48 49 #define KVM_MSR_ENABLED 1 50 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 51 #define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 52 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 53 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 54 #define MSR_KVM_STEAL_TIME 0x4b564d03 55 #define MSR_KVM_PV_EOI_EN 0x4b564d04 56 #define MSR_KVM_POLL_CONTROL 0x4b564d05 57 #define MSR_KVM_ASYNC_PF_INT 0x4b564d06 58 #define MSR_KVM_ASYNC_PF_ACK 0x4b564d07 59 #define MSR_KVM_MIGRATION_CONTROL 0x4b564d08 60 61 struct kvm_steal_time { 62 uint64_t steal; 63 uint32_t version; 64 uint32_t flags; 65 uint8_t preempted; 66 uint8_t uint8_t_pad[3]; 67 uint32_t pad[11]; 68 }; 69 70 #define KVM_VCPU_PREEMPTED (1 << 0) 71 #define KVM_VCPU_FLUSH_TLB (1 << 1) 72 73 #define KVM_CLOCK_PAIRING_WALLCLOCK 0 74 struct kvm_clock_pairing { 75 int64_t sec; 76 int64_t nsec; 77 uint64_t tsc; 78 uint32_t flags; 79 uint32_t pad[9]; 80 }; 81 82 #define KVM_STEAL_ALIGNMENT_BITS 5 83 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 84 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 85 86 #define KVM_MAX_MMU_OP_BATCH 32 87 88 #define KVM_ASYNC_PF_ENABLED (1 << 0) 89 #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 90 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 91 #define KVM_ASYNC_PF_DELIVERY_AS_INT (1 << 3) 92 93 /* MSR_KVM_ASYNC_PF_INT */ 94 #define KVM_ASYNC_PF_VEC_MASK GENMASK(7, 0) 95 96 /* MSR_KVM_MIGRATION_CONTROL */ 97 #define KVM_MIGRATION_READY (1 << 0) 98 99 /* KVM_HC_MAP_GPA_RANGE */ 100 #define KVM_MAP_GPA_RANGE_PAGE_SZ_4K 0 101 #define KVM_MAP_GPA_RANGE_PAGE_SZ_2M (1 << 0) 102 #define KVM_MAP_GPA_RANGE_PAGE_SZ_1G (1 << 1) 103 #define KVM_MAP_GPA_RANGE_ENC_STAT(n) (n << 4) 104 #define KVM_MAP_GPA_RANGE_ENCRYPTED KVM_MAP_GPA_RANGE_ENC_STAT(1) 105 #define KVM_MAP_GPA_RANGE_DECRYPTED KVM_MAP_GPA_RANGE_ENC_STAT(0) 106 107 /* Operations for KVM_HC_MMU_OP */ 108 #define KVM_MMU_OP_WRITE_PTE 1 109 #define KVM_MMU_OP_FLUSH_TLB 2 110 #define KVM_MMU_OP_RELEASE_PT 3 111 112 /* Payload for KVM_HC_MMU_OP */ 113 struct kvm_mmu_op_header { 114 uint32_t op; 115 uint32_t pad; 116 }; 117 118 struct kvm_mmu_op_write_pte { 119 struct kvm_mmu_op_header header; 120 uint64_t pte_phys; 121 uint64_t pte_val; 122 }; 123 124 struct kvm_mmu_op_flush_tlb { 125 struct kvm_mmu_op_header header; 126 }; 127 128 struct kvm_mmu_op_release_pt { 129 struct kvm_mmu_op_header header; 130 uint64_t pt_phys; 131 }; 132 133 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1 134 #define KVM_PV_REASON_PAGE_READY 2 135 136 struct kvm_vcpu_pv_apf_data { 137 /* Used for 'page not present' events delivered via #PF */ 138 uint32_t flags; 139 140 /* Used for 'page ready' events delivered via interrupt notification */ 141 uint32_t token; 142 143 uint8_t pad[56]; 144 uint32_t enabled; 145 }; 146 147 #define KVM_PV_EOI_BIT 0 148 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 149 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 150 #define KVM_PV_EOI_DISABLED 0x0 151 152 #endif /* _ASM_X86_KVM_PARA_H */ 153