d7de8b6d23
Currently we assume the physical page size on ARM is 4kB. While this is usually true, the architecture also supports 16kB and 64kB physical pages, and Linux (and possibly other OSes) can be configured to use these larger page sizes. With Go 1.6, such a configuration could potentially run, but generally resulted in memory corruption or random panics. With current master, this configuration will cause the runtime to panic during init on Linux when it checks the true physical page size (and will still cause corruption or panics on other OSes). However, the assumed physical page size only has to be a multiple of the true physical page size, the scavenger can now deal with large physical page sizes, and the rest of the runtime can deal with a larger assumed physical page size than the true size. Hence, there's little disadvantage to conservatively setting the assumed physical page size to 64kB on ARM. This may result in some extra memory use, since we can only return memory at multiples of the assumed physical page size. However, it is a simple change that should make Go run on systems configured for larger page sizes. The following commits will make the runtime query the actual physical page size from the OS, but this is a simple step there. Updates #12480. Change-Id: I851829595bc9e0c76235c847a7b5f62ad82b5302 Reviewed-on: https://go-review.googlesource.com/25021 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Minux Ma <minux@golang.org> |
||
|---|---|---|
| .github | ||
| api | ||
| doc | ||
| lib/time | ||
| misc | ||
| src | ||
| test | ||
| .gitattributes | ||
| .gitignore | ||
| AUTHORS | ||
| CONTRIBUTING.md | ||
| CONTRIBUTORS | ||
| favicon.ico | ||
| LICENSE | ||
| PATENTS | ||
| README.md | ||
| robots.txt | ||
The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
For documentation about how to install and use Go, visit https://golang.org/ or load doc/install-source.html in your web browser.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Go is the work of hundreds of contributors. We appreciate your help!
To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html
Note that we do not accept pull requests and that we use the issue tracker for bug reports and proposals only. Please ask questions on https://forum.golangbridge.org or https://groups.google.com/forum/#!forum/golang-nuts.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
--
Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this file). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install-source.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.
For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile:
export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin
See https://golang.org/doc/install or doc/install.html for more details.