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Date:      Sun, 22 Dec 2013 13:36:37 +0100
From:      Olivier Houchard <mlfbsd@ci0.org>
To:        Wojciech Macek <wma@semihalf.com>
Cc:        freebsd-arm@freebsd.org, Ruslan Bukin <br@freebsd.org>
Subject:   Re: arm SMP on Cortex-A15
Message-ID:  <20131222123636.GA61193@ci0.org>
In-Reply-To: <CANsEV8fSoygoSUyQqKoEQ7tRxjqDOwrPD8dU7O2V2PXRj35j4A@mail.gmail.com>
References:  <CANsEV8euHTsfviiCMP_aet3qYiK2T-oK%2B-37eay7zAPH2S2vaA@mail.gmail.com> <20131220125638.GA5132@mail.bsdpad.com> <20131222092913.GA89153@mail.bsdpad.com> <CANsEV8fSoygoSUyQqKoEQ7tRxjqDOwrPD8dU7O2V2PXRj35j4A@mail.gmail.com>

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On Sun, Dec 22, 2013 at 11:53:47AM +0100, Wojciech Macek wrote:
> Thanks, so it seems that there is still something wrong...
> From what I observed, the place where you got the panic was the most likely
> to fail if there are issues with TLB cache. I guess your case can also have
> the same root case. Nevertheless, I'll try to reproduce your setup and
> debug it futher.
> 
> Regards,
> Wojtek

I'm quite sure Ruslan's panic happens because the VFP code isn't completely
smp-safe, and I have patches that hopefully fixes this.

Regards,

Olivier





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