From: Bob Picco <bpicco@meloft.net>
To: sparclinux@vger.kernel.org
Subject: Re: [PATCH v2 0/9] sparc64: Support 47-bit physical addresses.
Date: Mon, 07 Oct 2013 16:07:45 +0000 [thread overview]
Message-ID: <20131007160745.GN29427@zareason> (raw)
In-Reply-To: <20130930.123130.354302574443157859.davem@davemloft.net>
Hi,
David Miller wrote: [Fri Oct 04 2013, 02:00:59PM EDT]
> From: Bob Picco <bpicco@meloft.net>
> Date: Fri, 4 Oct 2013 11:45:55 -0400
>
> > We seem to have our first issue with THP.
> >
> > I first encountered it with "ld". A THP enabled value of "never" resolved the
> > issue.
> >
> > Verified no issue on four level page table. Also no issue on x86_64 with
> > 3.7.x and 3.11 with unmodified test code.
>
> You may want to see if reverting the last patch in my series makes the
> problem go away, as a data point.
I examined 9/9 very closely yesterday and under the tranquility of rain noise.
I didn't spot an issue.
>
> It's the trickiest change, as it changes the PMD layout completely.
>
> If the problem persists, the next point to check is where the huge
> page size gets adjusted to 8MB from 4MB. Try reverted to just before
> that change and test again. That's the other major possible source of
> errors.
Yes, I suspected this and the reason for bottom up.
It seems to be here. With 9/9 and 8/9 reverted, the issue persists. Virgin
3.11 is solid. Of course there is always the possibility of mistake(s).
I've obviously missed an issue. Looking...
next prev parent reply other threads:[~2013-10-07 16:07 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-30 16:31 [PATCH v2 0/9] sparc64: Support 47-bit physical addresses David Miller
2013-09-30 20:14 ` Gurudas Pai
2013-09-30 23:07 ` David Miller
2013-09-30 23:47 ` Gurudas Pai
2013-09-30 23:51 ` David Miller
2013-10-01 0:42 ` Gurudas Pai
2013-10-01 20:11 ` David Miller
2013-10-01 23:08 ` Gurudas Pai
2013-10-02 1:20 ` Gurudas Pai
2013-10-02 5:11 ` David Miller
2013-10-02 18:14 ` David Miller
2013-10-02 18:25 ` David Miller
2013-10-02 19:38 ` Gurudas Pai
2013-10-02 20:17 ` David Miller
2013-10-02 21:02 ` Gurudas Pai
2013-10-02 21:18 ` David Miller
2013-10-04 2:07 ` Gurudas Pai
2013-10-04 2:16 ` Gurudas Pai
2013-10-04 15:45 ` Bob Picco
2013-10-04 16:24 ` Bob Picco
2013-10-04 18:00 ` David Miller
2013-10-07 16:07 ` Bob Picco [this message]
2013-10-07 16:08 ` David Miller
2013-10-08 13:42 ` Bob Picco
2013-10-09 19:18 ` David Miller
2013-10-09 20:03 ` David Miller
2013-10-10 14:19 ` Bob Picco
2013-10-11 21:26 ` Gurudas Pai
2013-10-11 21:54 ` David Miller
2013-10-12 2:05 ` Gurudas Pai
2013-10-12 5:06 ` David Miller
2013-10-23 1:18 ` Gurudas Pai
2013-10-23 5:28 ` David Miller
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