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Konstantin BogomolovandgVisor bot
f2834e82fe
With bigger page sizes, the sysmsg areas can be composed of fewer pages and still fit everything. Updates #8196. PiperOrigin-RevId: 919339515
34 lines
1.3 KiB
Go
34 lines
1.3 KiB
Go
// Copyright 2026 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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//go:build pagesize_64k
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package sysmsg
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import (
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"gvisor.dev/gvisor/pkg/hostarch"
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)
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const (
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// PerThreadMemSize is the size of a per-thread memory region (320KB).
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PerThreadMemSize = 5 * hostarch.PageSize
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// GuardSize is the size of an unmapped region before the signal stack (64KB).
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GuardSize = hostarch.PageSize
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PerThreadPrivateStackOffset = GuardSize
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PerThreadPrivateStackSize = 1 * hostarch.PageSize // 64KB (sufficient for syshandler private stack)
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// PerThreadSharedStackSize is the size of a per-thread stack region (128KB, includes stack + sysmsg).
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PerThreadSharedStackSize = 2 * hostarch.PageSize
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PerThreadSharedStackOffset = 3 * hostarch.PageSize
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)
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