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 33 #define KVM_HINTS_REALTIME 0 34 35 /* The last 8 bits are used to indicate how to interpret the flags field 36 * in pvclock structure. If no bits are set, all flags are ignored. 37 */ 38 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 39 40 #define MSR_KVM_WALL_CLOCK 0x11 41 #define MSR_KVM_SYSTEM_TIME 0x12 42 43 #define KVM_MSR_ENABLED 1 44 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 45 #define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 46 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 47 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 48 #define MSR_KVM_STEAL_TIME 0x4b564d03 49 #define MSR_KVM_PV_EOI_EN 0x4b564d04 50 51 struct kvm_steal_time { 52 uint64_t steal; 53 uint32_t version; 54 uint32_t flags; 55 uint8_t preempted; 56 uint8_t uint8_t_pad[3]; 57 uint32_t pad[11]; 58 }; 59 60 #define KVM_VCPU_PREEMPTED (1 << 0) 61 #define KVM_VCPU_FLUSH_TLB (1 << 1) 62 63 #define KVM_CLOCK_PAIRING_WALLCLOCK 0 64 struct kvm_clock_pairing { 65 int64_t sec; 66 int64_t nsec; 67 uint64_t tsc; 68 uint32_t flags; 69 uint32_t pad[9]; 70 }; 71 72 #define KVM_STEAL_ALIGNMENT_BITS 5 73 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 74 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 75 76 #define KVM_MAX_MMU_OP_BATCH 32 77 78 #define KVM_ASYNC_PF_ENABLED (1 << 0) 79 #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 80 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 81 82 /* Operations for KVM_HC_MMU_OP */ 83 #define KVM_MMU_OP_WRITE_PTE 1 84 #define KVM_MMU_OP_FLUSH_TLB 2 85 #define KVM_MMU_OP_RELEASE_PT 3 86 87 /* Payload for KVM_HC_MMU_OP */ 88 struct kvm_mmu_op_header { 89 uint32_t op; 90 uint32_t pad; 91 }; 92 93 struct kvm_mmu_op_write_pte { 94 struct kvm_mmu_op_header header; 95 uint64_t pte_phys; 96 uint64_t pte_val; 97 }; 98 99 struct kvm_mmu_op_flush_tlb { 100 struct kvm_mmu_op_header header; 101 }; 102 103 struct kvm_mmu_op_release_pt { 104 struct kvm_mmu_op_header header; 105 uint64_t pt_phys; 106 }; 107 108 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1 109 #define KVM_PV_REASON_PAGE_READY 2 110 111 struct kvm_vcpu_pv_apf_data { 112 uint32_t reason; 113 uint8_t pad[60]; 114 uint32_t enabled; 115 }; 116 117 #define KVM_PV_EOI_BIT 0 118 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 119 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 120 #define KVM_PV_EOI_DISABLED 0x0 121 122 #endif /* _ASM_X86_KVM_PARA_H */ 123