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