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 32#define KVM_HINTS_REALTIME 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 50struct kvm_steal_time { 51 uint64_t steal; 52 uint32_t version; 53 uint32_t flags; 54 uint8_t preempted; 55 uint8_t uint8_t_pad[3]; 56 uint32_t 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 63struct kvm_clock_pairing { 64 int64_t sec; 65 int64_t nsec; 66 uint64_t tsc; 67 uint32_t flags; 68 uint32_t 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 */ 87struct kvm_mmu_op_header { 88 uint32_t op; 89 uint32_t pad; 90}; 91 92struct kvm_mmu_op_write_pte { 93 struct kvm_mmu_op_header header; 94 uint64_t pte_phys; 95 uint64_t pte_val; 96}; 97 98struct kvm_mmu_op_flush_tlb { 99 struct kvm_mmu_op_header header; 100}; 101 102struct kvm_mmu_op_release_pt { 103 struct kvm_mmu_op_header header; 104 uint64_t pt_phys; 105}; 106 107#define KVM_PV_REASON_PAGE_NOT_PRESENT 1 108#define KVM_PV_REASON_PAGE_READY 2 109 110struct kvm_vcpu_pv_apf_data { 111 uint32_t reason; 112 uint8_t pad[60]; 113 uint32_t 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 /* _ASM_X86_KVM_PARA_H */ 122