1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_ASM_X86_KVM_PARA_H 3 #define _UAPI_ASM_X86_KVM_PARA_H 4 5 #include <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 32 #define KVM_HINTS_DEDICATED 0 33 34 /* The last 8 bits are used to indicate how to interpret the flags field 35 * in pvclock structure. If no bits are set, all flags are ignored. 36 */ 37 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 38 39 #define MSR_KVM_WALL_CLOCK 0x11 40 #define MSR_KVM_SYSTEM_TIME 0x12 41 42 #define KVM_MSR_ENABLED 1 43 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 44 #define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 45 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 46 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 47 #define MSR_KVM_STEAL_TIME 0x4b564d03 48 #define MSR_KVM_PV_EOI_EN 0x4b564d04 49 50 struct kvm_steal_time { 51 __u64 steal; 52 __u32 version; 53 __u32 flags; 54 __u8 preempted; 55 __u8 u8_pad[3]; 56 __u32 pad[11]; 57 }; 58 59 #define KVM_VCPU_PREEMPTED (1 << 0) 60 #define KVM_VCPU_FLUSH_TLB (1 << 1) 61 62 #define KVM_CLOCK_PAIRING_WALLCLOCK 0 63 struct kvm_clock_pairing { 64 __s64 sec; 65 __s64 nsec; 66 __u64 tsc; 67 __u32 flags; 68 __u32 pad[9]; 69 }; 70 71 #define KVM_STEAL_ALIGNMENT_BITS 5 72 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 73 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 74 75 #define KVM_MAX_MMU_OP_BATCH 32 76 77 #define KVM_ASYNC_PF_ENABLED (1 << 0) 78 #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 79 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 80 81 /* Operations for KVM_HC_MMU_OP */ 82 #define KVM_MMU_OP_WRITE_PTE 1 83 #define KVM_MMU_OP_FLUSH_TLB 2 84 #define KVM_MMU_OP_RELEASE_PT 3 85 86 /* Payload for KVM_HC_MMU_OP */ 87 struct kvm_mmu_op_header { 88 __u32 op; 89 __u32 pad; 90 }; 91 92 struct kvm_mmu_op_write_pte { 93 struct kvm_mmu_op_header header; 94 __u64 pte_phys; 95 __u64 pte_val; 96 }; 97 98 struct kvm_mmu_op_flush_tlb { 99 struct kvm_mmu_op_header header; 100 }; 101 102 struct kvm_mmu_op_release_pt { 103 struct kvm_mmu_op_header header; 104 __u64 pt_phys; 105 }; 106 107 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1 108 #define KVM_PV_REASON_PAGE_READY 2 109 110 struct kvm_vcpu_pv_apf_data { 111 __u32 reason; 112 __u8 pad[60]; 113 __u32 enabled; 114 }; 115 116 #define KVM_PV_EOI_BIT 0 117 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 118 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 119 #define KVM_PV_EOI_DISABLED 0x0 120 121 #endif /* _UAPI_ASM_X86_KVM_PARA_H */ 122