R-PI fixes for dhclient/sshd?

Adrian Chadd adrian at freebsd.org
Fri Dec 20 20:31:56 UTC 2013


On 20 December 2013 12:24, Zbigniew Bodek <zbb at freebsd.org> wrote:

>> Thanks for the update.
>>
>> What would be the harm in reverting the patch?
>>
>> http://svnweb.freebsd.org/base/head/sys/arm/arm/pmap-v6.c?r1=251370&r2=252694&pathrev=252694
>>
>
> Hello again.
>
> I guess it should be some performance impact since we will need to
> write all pages marked as RW to backing
> storage on page-out. This is regardless of its actual dirty state (no
> modified emulation).
> But this was how it behaved earlier and nothing bad happened so it
> might be worth to temporary revert it and
> debug the problem without the negative influence on the users. After
> proper fix we should apply it again.
>
> It's up to you. I have no objections to that (I have few other patches
> that need to wait for pmap problems
> resolution anyway like pmap_copy() + SP).

Ok.

ARM people - does anyone see any particular problems reverting this
patch for now so the armv6 stuff is usable?

It's likely worth filing a PR for this with the very relevant
information for the bug, so I'll go and do that now.

Thanks to everyone who replied!



-adrian


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