github.com/MerlinKodo/gvisor@v0.0.0-20231110090155-957f62ecf90e/pkg/sentry/platform/kvm/kvm_arm64.go (about) 1 // Copyright 2019 The gVisor Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 //go:build arm64 16 // +build arm64 17 18 package kvm 19 20 import ( 21 "github.com/MerlinKodo/gvisor/pkg/ring0" 22 "github.com/MerlinKodo/gvisor/pkg/sentry/arch" 23 ) 24 25 type kvmOneReg struct { 26 id uint64 27 addr uint64 28 } 29 30 // arm64HypercallMMIOBase is MMIO base address used to dispatch hypercalls. 31 var arm64HypercallMMIOBase uintptr 32 33 const KVM_NR_SPSR = 5 34 35 type userFpsimdState struct { 36 vregs [64]uint64 37 fpsr uint32 38 fpcr uint32 39 reserved [2]uint32 40 } 41 42 type userRegs struct { 43 Regs arch.Registers 44 sp_el1 uint64 45 elr_el1 uint64 46 spsr [KVM_NR_SPSR]uint64 47 fpRegs userFpsimdState 48 } 49 50 type exception struct { 51 sErrPending uint8 52 sErrHasEsr uint8 53 extDabtPending uint8 54 pad [5]uint8 55 sErrEsr uint64 56 } 57 58 type kvmVcpuEvents struct { 59 exception 60 rsvd [12]uint32 61 } 62 63 // updateGlobalOnce does global initialization. It has to be called only once. 64 func updateGlobalOnce(fd int) error { 65 err := updateSystemValues(int(fd)) 66 ring0.Init() 67 physicalInit() 68 return err 69 }