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