Re: SOSEND_LOAN problems in MIPS

[Matt Thomas <matt%3am-software.com@localhost>]

> On Jun 21, 2016, at 8:30 AM, Michael <macallan%netbsd.org@localhost> wrote:
> 
> Hello,
> 
> On Tue, 21 Jun 2016 08:49:44 +0000
> coypu%SDF.ORG@localhost wrote:
> 
>> Replying to myself on tech-kern for the sake of completeness, in case
>> anyone has similar issues.
>> 
>> For the failure of `cat hugefile.gz | gunzip -` I must use both
>> PIPE_SOCKETPAIR and SOSEND_LOAN (default on)
> 
> That explains why it didn't trigger on sgimips.

It's very CPU dependent.  Maybe the CPUs used on your sgimips
don't have the problem.  It's related to virtual cache aliasing.