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#define KVM_FEATURE_HC_MAP_GPA_RANGE 16 37#define KVM_FEATURE_MIGRATION_CONTROL 17 38 39#define KVM_HINTS_REALTIME 0 40 41/* The last 8 bits are used to indicate how to interpret the flags field 42 * in pvclock structure. If no bits are set, all flags are ignored. 43 */ 44#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 45 46#define MSR_KVM_WALL_CLOCK 0x11 47#define MSR_KVM_SYSTEM_TIME 0x12 48 49#define KVM_MSR_ENABLED 1 50/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 51#define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 52#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 53#define MSR_KVM_ASYNC_PF_EN 0x4b564d02 54#define MSR_KVM_STEAL_TIME 0x4b564d03 55#define MSR_KVM_PV_EOI_EN 0x4b564d04 56#define MSR_KVM_POLL_CONTROL 0x4b564d05 57#define MSR_KVM_ASYNC_PF_INT 0x4b564d06 58#define MSR_KVM_ASYNC_PF_ACK 0x4b564d07 59#define MSR_KVM_MIGRATION_CONTROL 0x4b564d08 60 61struct kvm_steal_time { 62 uint64_t steal; 63 uint32_t version; 64 uint32_t flags; 65 uint8_t preempted; 66 uint8_t uint8_t_pad[3]; 67 uint32_t pad[11]; 68}; 69 70#define KVM_VCPU_PREEMPTED (1 << 0) 71#define KVM_VCPU_FLUSH_TLB (1 << 1) 72 73#define KVM_CLOCK_PAIRING_WALLCLOCK 0 74struct kvm_clock_pairing { 75 int64_t sec; 76 int64_t nsec; 77 uint64_t tsc; 78 uint32_t flags; 79 uint32_t pad[9]; 80}; 81 82#define KVM_STEAL_ALIGNMENT_BITS 5 83#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 84#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 85 86#define KVM_MAX_MMU_OP_BATCH 32 87 88#define KVM_ASYNC_PF_ENABLED (1 << 0) 89#define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 90#define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 91#define KVM_ASYNC_PF_DELIVERY_AS_INT (1 << 3) 92 93/* MSR_KVM_ASYNC_PF_INT */ 94#define KVM_ASYNC_PF_VEC_MASK GENMASK(7, 0) 95 96/* MSR_KVM_MIGRATION_CONTROL */ 97#define KVM_MIGRATION_READY (1 << 0) 98 99/* KVM_HC_MAP_GPA_RANGE */ 100#define KVM_MAP_GPA_RANGE_PAGE_SZ_4K 0 101#define KVM_MAP_GPA_RANGE_PAGE_SZ_2M (1 << 0) 102#define KVM_MAP_GPA_RANGE_PAGE_SZ_1G (1 << 1) 103#define KVM_MAP_GPA_RANGE_ENC_STAT(n) (n << 4) 104#define KVM_MAP_GPA_RANGE_ENCRYPTED KVM_MAP_GPA_RANGE_ENC_STAT(1) 105#define KVM_MAP_GPA_RANGE_DECRYPTED KVM_MAP_GPA_RANGE_ENC_STAT(0) 106 107/* Operations for KVM_HC_MMU_OP */ 108#define KVM_MMU_OP_WRITE_PTE 1 109#define KVM_MMU_OP_FLUSH_TLB 2 110#define KVM_MMU_OP_RELEASE_PT 3 111 112/* Payload for KVM_HC_MMU_OP */ 113struct kvm_mmu_op_header { 114 uint32_t op; 115 uint32_t pad; 116}; 117 118struct kvm_mmu_op_write_pte { 119 struct kvm_mmu_op_header header; 120 uint64_t pte_phys; 121 uint64_t pte_val; 122}; 123 124struct kvm_mmu_op_flush_tlb { 125 struct kvm_mmu_op_header header; 126}; 127 128struct kvm_mmu_op_release_pt { 129 struct kvm_mmu_op_header header; 130 uint64_t pt_phys; 131}; 132 133#define KVM_PV_REASON_PAGE_NOT_PRESENT 1 134#define KVM_PV_REASON_PAGE_READY 2 135 136struct kvm_vcpu_pv_apf_data { 137 /* Used for 'page not present' events delivered via #PF */ 138 uint32_t flags; 139 140 /* Used for 'page ready' events delivered via interrupt notification */ 141 uint32_t token; 142 143 uint8_t pad[56]; 144 uint32_t enabled; 145}; 146 147#define KVM_PV_EOI_BIT 0 148#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 149#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 150#define KVM_PV_EOI_DISABLED 0x0 151 152#endif /* _ASM_X86_KVM_PARA_H */ 153