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#define KVM_FEATURE_ASYNC_PF_INT 14 35#define KVM_FEATURE_MSI_EXT_DEST_ID 15 36 37#define KVM_HINTS_REALTIME 0 38 39/* The last 8 bits are used to indicate how to interpret the flags field 40 * in pvclock structure. If no bits are set, all flags are ignored. 41 */ 42#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 43 44#define MSR_KVM_WALL_CLOCK 0x11 45#define MSR_KVM_SYSTEM_TIME 0x12 46 47#define KVM_MSR_ENABLED 1 48/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 49#define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 50#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 51#define MSR_KVM_ASYNC_PF_EN 0x4b564d02 52#define MSR_KVM_STEAL_TIME 0x4b564d03 53#define MSR_KVM_PV_EOI_EN 0x4b564d04 54#define MSR_KVM_POLL_CONTROL 0x4b564d05 55#define MSR_KVM_ASYNC_PF_INT 0x4b564d06 56#define MSR_KVM_ASYNC_PF_ACK 0x4b564d07 57 58struct kvm_steal_time { 59 uint64_t steal; 60 uint32_t version; 61 uint32_t flags; 62 uint8_t preempted; 63 uint8_t uint8_t_pad[3]; 64 uint32_t pad[11]; 65}; 66 67#define KVM_VCPU_PREEMPTED (1 << 0) 68#define KVM_VCPU_FLUSH_TLB (1 << 1) 69 70#define KVM_CLOCK_PAIRING_WALLCLOCK 0 71struct kvm_clock_pairing { 72 int64_t sec; 73 int64_t nsec; 74 uint64_t tsc; 75 uint32_t flags; 76 uint32_t pad[9]; 77}; 78 79#define KVM_STEAL_ALIGNMENT_BITS 5 80#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 81#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 82 83#define KVM_MAX_MMU_OP_BATCH 32 84 85#define KVM_ASYNC_PF_ENABLED (1 << 0) 86#define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 87#define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 88#define KVM_ASYNC_PF_DELIVERY_AS_INT (1 << 3) 89 90/* MSR_KVM_ASYNC_PF_INT */ 91#define KVM_ASYNC_PF_VEC_MASK GENMASK(7, 0) 92 93 94/* Operations for KVM_HC_MMU_OP */ 95#define KVM_MMU_OP_WRITE_PTE 1 96#define KVM_MMU_OP_FLUSH_TLB 2 97#define KVM_MMU_OP_RELEASE_PT 3 98 99/* Payload for KVM_HC_MMU_OP */ 100struct kvm_mmu_op_header { 101 uint32_t op; 102 uint32_t pad; 103}; 104 105struct kvm_mmu_op_write_pte { 106 struct kvm_mmu_op_header header; 107 uint64_t pte_phys; 108 uint64_t pte_val; 109}; 110 111struct kvm_mmu_op_flush_tlb { 112 struct kvm_mmu_op_header header; 113}; 114 115struct kvm_mmu_op_release_pt { 116 struct kvm_mmu_op_header header; 117 uint64_t pt_phys; 118}; 119 120#define KVM_PV_REASON_PAGE_NOT_PRESENT 1 121#define KVM_PV_REASON_PAGE_READY 2 122 123struct kvm_vcpu_pv_apf_data { 124 /* Used for 'page not present' events delivered via #PF */ 125 uint32_t flags; 126 127 /* Used for 'page ready' events delivered via interrupt notification */ 128 uint32_t token; 129 130 uint8_t pad[56]; 131 uint32_t enabled; 132}; 133 134#define KVM_PV_EOI_BIT 0 135#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 136#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 137#define KVM_PV_EOI_DISABLED 0x0 138 139#endif /* _ASM_X86_KVM_PARA_H */ 140