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