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// Copyright 2019 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build arm64
package kvm
import (
"syscall"
)
// userMemoryRegion is a region of physical memory.
//
// This mirrors kvm_memory_region.
type userMemoryRegion struct {
slot uint32
flags uint32
guestPhysAddr uint64
memorySize uint64
userspaceAddr uint64
}
type kvmOneReg struct {
id uint64
addr uint64
}
const KVM_NR_SPSR = 5
type userFpsimdState struct {
vregs [64]uint64
fpsr uint32
fpcr uint32
reserved [2]uint32
}
type userRegs struct {
Regs syscall.PtraceRegs
sp_el1 uint64
elr_el1 uint64
spsr [KVM_NR_SPSR]uint64
fpRegs userFpsimdState
}
// runData is the run structure. This may be mapped for synchronous register
// access (although that doesn't appear to be supported by my kernel at least).
//
// This mirrors kvm_run.
type runData struct {
requestInterruptWindow uint8
_ [7]uint8
exitReason uint32
readyForInterruptInjection uint8
ifFlag uint8
_ [2]uint8
cr8 uint64
apicBase uint64
// This is the union data for exits. Interpretation depends entirely on
// the exitReason above (see vCPU code for more information).
data [32]uint64
}
// updateGlobalOnce does global initialization. It has to be called only once.
func updateGlobalOnce(fd int) error {
physicalInit()
err := updateSystemValues(int(fd))
updateVectorTable()
return err
}
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