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 <linux/types.h> 6 #include <asm/hyperv.h> 7 8 /* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx. It 9 * should be used to determine that a VM is running under KVM. 10 */ 11 #define KVM_CPUID_SIGNATURE 0x40000000 12 13 /* This CPUID returns a feature bitmap in eax. Before enabling a particular 14 * paravirtualization, the appropriate feature bit should be checked. 15 */ 16 #define KVM_CPUID_FEATURES 0x40000001 17 #define KVM_FEATURE_CLOCKSOURCE 0 18 #define KVM_FEATURE_NOP_IO_DELAY 1 19 #define KVM_FEATURE_MMU_OP 2 20 /* This indicates that the new set of kvmclock msrs 21 * are available. The use of 0x11 and 0x12 is deprecated 22 */ 23 #define KVM_FEATURE_CLOCKSOURCE2 3 24 #define KVM_FEATURE_ASYNC_PF 4 25 #define KVM_FEATURE_STEAL_TIME 5 26 #define KVM_FEATURE_PV_EOI 6 27 #define KVM_FEATURE_PV_UNHALT 7 28 #define KVM_FEATURE_PV_TLB_FLUSH 9 29 #define KVM_FEATURE_ASYNC_PF_VMEXIT 10 30 31 /* The last 8 bits are used to indicate how to interpret the flags field 32 * in pvclock structure. If no bits are set, all flags are ignored. 33 */ 34 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 35 36 #define MSR_KVM_WALL_CLOCK 0x11 37 #define MSR_KVM_SYSTEM_TIME 0x12 38 39 #define KVM_MSR_ENABLED 1 40 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 41 #define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 42 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 43 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 44 #define MSR_KVM_STEAL_TIME 0x4b564d03 45 #define MSR_KVM_PV_EOI_EN 0x4b564d04 46 47 struct kvm_steal_time { 48 __u64 steal; 49 __u32 version; 50 __u32 flags; 51 __u8 preempted; 52 __u8 u8_pad[3]; 53 __u32 pad[11]; 54 }; 55 56 #define KVM_VCPU_PREEMPTED (1 << 0) 57 #define KVM_VCPU_FLUSH_TLB (1 << 1) 58 59 #define KVM_CLOCK_PAIRING_WALLCLOCK 0 60 struct kvm_clock_pairing { 61 __s64 sec; 62 __s64 nsec; 63 __u64 tsc; 64 __u32 flags; 65 __u32 pad[9]; 66 }; 67 68 #define KVM_STEAL_ALIGNMENT_BITS 5 69 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 70 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 71 72 #define KVM_MAX_MMU_OP_BATCH 32 73 74 #define KVM_ASYNC_PF_ENABLED (1 << 0) 75 #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 76 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 77 78 /* Operations for KVM_HC_MMU_OP */ 79 #define KVM_MMU_OP_WRITE_PTE 1 80 #define KVM_MMU_OP_FLUSH_TLB 2 81 #define KVM_MMU_OP_RELEASE_PT 3 82 83 /* Payload for KVM_HC_MMU_OP */ 84 struct kvm_mmu_op_header { 85 __u32 op; 86 __u32 pad; 87 }; 88 89 struct kvm_mmu_op_write_pte { 90 struct kvm_mmu_op_header header; 91 __u64 pte_phys; 92 __u64 pte_val; 93 }; 94 95 struct kvm_mmu_op_flush_tlb { 96 struct kvm_mmu_op_header header; 97 }; 98 99 struct kvm_mmu_op_release_pt { 100 struct kvm_mmu_op_header header; 101 __u64 pt_phys; 102 }; 103 104 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1 105 #define KVM_PV_REASON_PAGE_READY 2 106 107 struct kvm_vcpu_pv_apf_data { 108 __u32 reason; 109 __u8 pad[60]; 110 __u32 enabled; 111 }; 112 113 #define KVM_PV_EOI_BIT 0 114 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 115 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 116 #define KVM_PV_EOI_DISABLED 0x0 117 118 #endif /* _ASM_X86_KVM_PARA_H */ 119