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add description of the proxy

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Stefan Lankes 2017-09-24 11:02:18 +02:00
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README.md
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@ -148,6 +148,26 @@ $ make install
**Note:** If you use the cross compiler outside of this repository, the compiler uses per default the library operating systems located by the toolchain (e.g. `/opt/hermit/x86_64-hermit/lib/libhermit.a`).
## Proxy
Part of HermitCore is a small helper tool, which is called *proxy*.
This tool helps to start HermitCore applications within VM or bare-metal on a NUMA node and is a bridge to the Linux system.
If the proxy is register as loader to the Linux system, HermitCore applications can be started like common Linux applications.
The proxy can be registered with following command.
```bash
$ sudo -c sh 'echo ":hermit:M:7:\\x42::/opt/hermit/bin/proxy:" > /proc/sys/fs/binfmt_misc/register'
$ /opt/hermit/x86_64-hermit/extra/tests/hello
```
Otherwise the proxy must be started directly and get the path to HermitCore application as argument.
Afterwards, the proxy start the HermitCore applications within a VM ore bare-metal on a NUMA node.
```bash
$ # using QEMU
$ HERMIT_ISLE=qemu /opt/hermit/bin/proxy /opt/hermit/x86_64-hermit/extra/tests/hello
```
## Testing
### As classical standalone unikernel within a virtual machine