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Date: Mon,  4 Apr 2011 21:00:14 -0700
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From: ron minnich <rminnich@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] Go Plan 9
Topicbox-Message-UUID: c94748d6-ead6-11e9-9d60-3106f5b1d025

I tried a simple hack on 9vx.

First, I had sysbrk_ return the max possible value instead of the
requested value. I.e., if go runtime asked for 768MB, I had it return
something less than TSTKTOP, which is around 256 MB. I like this
because if we change the USTKTOP on 9vx in future we don't have to
recompile the go runtime, and a single binary can run on many 9vx
systems which might have different limits compiled in.

Unfortunately the runtime code ignores the returned value from sbrk_;
strike one.

I then had it return -1 when asked for more memory than could be
returned; Got this:
term% ./testgo.out
throw:

and that was it.

Russ, could the go runtime maybe use the value returned by sbrk
instead of  assuming it got all it asked for?

ron