signal 8 (floating point exception) upon resume

John Baldwin jhb at freebsd.org
Wed Mar 26 19:01:00 UTC 2014


On Wednesday, March 26, 2014 1:43:22 pm John Baldwin wrote:
> On Tuesday, March 25, 2014 5:38:50 pm Adrian Chadd wrote:
> > On 25 March 2014 12:46, John Baldwin <jhb at freebsd.org> wrote:
> > > On Sunday, March 23, 2014 4:41:24 pm Adrian Chadd wrote:
> > >> [snip]
> > >>
> > >> Hi,
> > >>
> > >> As part of this thread, a whole lot of stuff was thrown around to try
> > >> and fix / improve the correctness of this.
> > >>
> > >> But it still happens to me in -HEAD i386. I updated to r263418 and
> > >> it's now doing it around 30-50% of the time I resume.
> > >
> > > Yes, nothing has changed in HEAD.
> > >
> > >> So, since I really am trying to avoid getting neck deep in learning
> > >> (by myself) a new thing right now, would someone be willing to help me
> > >> through the process of (a) learning how this is all supposed to work
> > >> (which thanks to jhb and bde, I think I've learnt from the posts in
> > >> this thread) and (b) some things to try out? I'll be able to report
> > >> the results of this pretty quickly.
> > >
> > > You can try www.freebsd.org/~jhb/patches/i386_fpu_suspend2.patch.  You
> > > could have tried the first patch I posted here earlier when I first
> > > posted it as well. :)
> > 
> > There was a lot of chatter, I thought it was prudent to let it all
> > settle before jumping in.
> > 
> > Anyway:
> 
> You do understand C well enough to fix simple typos?  I don't have any
> i386 machines around, but I'll work on cross-building.

i386_fpu_suspend3.patch at the same URL builds for me.

-- 
John Baldwin


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