Re: ATF testing

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Mon, 26 Feb 2018 16:24:40 +0300
Valery Ushakov <uwe%stderr.spb.ru@localhost> wrote:

> On Sat, Feb 24, 2018 at 17:13:09 +0000, Sevan Janiyan wrote:
> 
> > I thought I'd start running the test suite on NetBSD/macppc to extend
> > the range of testing systems, I'm not fully setup yet but I gave it a
> > spin on my 12" PowerBook to see how things go.
> > 3 hours later, I have a shiny report which some 5 unexpected failures.
> > See:
> > https://www.geeklan.co.uk/netbsd-atf/macppc/  
> 
> 
> * lib/libc/gen/t_siginfo sigbus_adraln
> 
> it looks like at least some poweprc cpus allow unaligned accesses and
> on those that don't the kernel will take the trap and emulate it.  I
> don't see any sysctl that would control this or that would tell
> whether unaligned accesses are trapped.

IIRC unaligned accesses are generally allowed but some, like the 601,
need help when the access crosses a page boundary.

have fun
Michael