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 35 #define KVM_HINTS_REALTIME 0 36 37 /* The last 8 bits are used to indicate how to interpret the flags field 38 * in pvclock structure. If no bits are set, all flags are ignored. 39 */ 40 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 41 42 #define MSR_KVM_WALL_CLOCK 0x11 43 #define MSR_KVM_SYSTEM_TIME 0x12 44 45 #define KVM_MSR_ENABLED 1 46 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 47 #define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 48 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 49 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 50 #define MSR_KVM_STEAL_TIME 0x4b564d03 51 #define MSR_KVM_PV_EOI_EN 0x4b564d04 52 #define MSR_KVM_POLL_CONTROL 0x4b564d05 53 54 struct kvm_steal_time { 55 uint64_t steal; 56 uint32_t version; 57 uint32_t flags; 58 uint8_t preempted; 59 uint8_t uint8_t_pad[3]; 60 uint32_t pad[11]; 61 }; 62 63 #define KVM_VCPU_PREEMPTED (1 << 0) 64 #define KVM_VCPU_FLUSH_TLB (1 << 1) 65 66 #define KVM_CLOCK_PAIRING_WALLCLOCK 0 67 struct kvm_clock_pairing { 68 int64_t sec; 69 int64_t nsec; 70 uint64_t tsc; 71 uint32_t flags; 72 uint32_t pad[9]; 73 }; 74 75 #define KVM_STEAL_ALIGNMENT_BITS 5 76 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 77 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 78 79 #define KVM_MAX_MMU_OP_BATCH 32 80 81 #define KVM_ASYNC_PF_ENABLED (1 << 0) 82 #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 83 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 84 85 /* Operations for KVM_HC_MMU_OP */ 86 #define KVM_MMU_OP_WRITE_PTE 1 87 #define KVM_MMU_OP_FLUSH_TLB 2 88 #define KVM_MMU_OP_RELEASE_PT 3 89 90 /* Payload for KVM_HC_MMU_OP */ 91 struct kvm_mmu_op_header { 92 uint32_t op; 93 uint32_t pad; 94 }; 95 96 struct kvm_mmu_op_write_pte { 97 struct kvm_mmu_op_header header; 98 uint64_t pte_phys; 99 uint64_t pte_val; 100 }; 101 102 struct kvm_mmu_op_flush_tlb { 103 struct kvm_mmu_op_header header; 104 }; 105 106 struct kvm_mmu_op_release_pt { 107 struct kvm_mmu_op_header header; 108 uint64_t pt_phys; 109 }; 110 111 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1 112 #define KVM_PV_REASON_PAGE_READY 2 113 114 struct kvm_vcpu_pv_apf_data { 115 uint32_t reason; 116 uint8_t pad[60]; 117 uint32_t enabled; 118 }; 119 120 #define KVM_PV_EOI_BIT 0 121 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 122 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 123 #define KVM_PV_EOI_DISABLED 0x0 124 125 #endif /* _ASM_X86_KVM_PARA_H */ 126