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Remzi Arpaci-Dusseau
2019-03-06 17:25:01 -06:00
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INSTALL-xv6.md
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@@ -23,11 +23,22 @@ There! Now you have completed the easiest part.
## MacOS Build Environment for xv6
To play with xv6 on a Mac, you'll need to install two pieces of software. The
first is the [`qemu`](https://www.qemu.org/download/) machine simulation
first is the [`qemu`](https://www.qemu.org/download/) machine emulation
environment.
What is a simulator? TBD.
Why use one? TBD.
To learn more about what emulation is, read [this
page](https://en.wikipedia.org/wiki/Emulator). The short story is that an
emulator is just another computer program, but one that is a realistic
facsimile of a particular computer system. In this case, we'll use `qemu` to
pretend we are running an x86 computer system; on this pretend x86 system,
we'll boot our xv6 kernel.
Now you might ask: why not just run xv6 on a real machine? You could do that,
but it would make running and debugging xv6 slower and more painful. With a
realistic emulator like `qemu`, you can quickly run your kernel but not have
the pain of rebooting the actual system you are using. Further, if you make a
mistake, your entire machine doesn't lock up, just the emulator, which you can
exit or kill. It just makes your life much better than doing the real thing.
To install `qemu` on a Mac, just do the following: