Merge pull request #890 from lubinszARM:pr_phyap
PiperOrigin-RevId: 286299056
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commit
98e8246ad1
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@ -34,6 +34,8 @@ go_library(
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"machine_arm64_unsafe.go",
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"machine_unsafe.go",
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"physical_map.go",
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"physical_map_amd64.go",
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"physical_map_arm64.go",
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"virtual_map.go",
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],
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importpath = "gvisor.dev/gvisor/pkg/sentry/platform/kvm",
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@ -24,15 +24,6 @@ import (
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"gvisor.dev/gvisor/pkg/sentry/usermem"
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)
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const (
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// reservedMemory is a chunk of physical memory reserved starting at
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// physical address zero. There are some special pages in this region,
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// so we just call the whole thing off.
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//
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// Other architectures may define this to be zero.
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reservedMemory = 0x100000000
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)
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type region struct {
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virtual uintptr
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length uintptr
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@ -59,8 +50,7 @@ func fillAddressSpace() (excludedRegions []region) {
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// We can cut vSize in half, because the kernel will be using the top
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// half and we ignore it while constructing mappings. It's as if we've
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// already excluded half the possible addresses.
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vSize := uintptr(1) << ring0.VirtualAddressBits()
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vSize = vSize >> 1
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vSize := ring0.UserspaceSize
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// We exclude reservedMemory below from our physical memory size, so it
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// needs to be dropped here as well. Otherwise, we could end up with
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@ -0,0 +1,22 @@
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// Copyright 2019 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package kvm
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const (
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// reservedMemory is a chunk of physical memory reserved starting at
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// physical address zero. There are some special pages in this region,
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// so we just call the whole thing off.
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reservedMemory = 0x100000000
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)
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@ -0,0 +1,19 @@
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// Copyright 2019 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package kvm
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const (
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reservedMemory = 0
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)
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