From: Robin Holt <holt@sgi.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Robin Holt <holt@sgi.com>, WANG Cong <xiyou.wangcong@gmail.com>,
Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: Commit 722bc6b167 breaks booting on an 8TB system.
Date: Wed, 6 Jun 2012 04:42:11 -0500 [thread overview]
Message-ID: <20120606094211.GL4948@sgi.com> (raw)
In-Reply-To: <CAE9FiQW_yBZZKsVt5Fy7QEqa7hBXhfbka4Ubh=oz4hDOzLQ0mg@mail.gmail.com>
On Mon, Jun 04, 2012 at 04:51:19PM -0700, Yinghai Lu wrote:
> On Mon, Jun 4, 2012 at 3:07 AM, Robin Holt <holt@sgi.com> wrote:
> > On Sun, Jun 03, 2012 at 12:00:29AM -0700, Yinghai Lu wrote:
> >> On Fri, Jun 1, 2012 at 8:54 AM, Robin Holt <holt@sgi.com> wrote:
> >> > I just tried to boot an 8TB system. It fails very early in boot with:
> >> >
> >> > Kernel panic - not syncing: Cannot find space for the kernel page tables
> >> >
> >> >
> >> > A git bisect lead me to commit 722bc6b16771ed80871e1fd81c86d3627dda2ac8.
> >> >
> >> > A git revert of that commit based on Linus' current as of a few hours ago
> >> > (commit fb21aff) does boot past that point on the 8TB configuration.
> >>
> >> have some local patches. please check if they are helping...
> >
> > I will not have access to the machine until late tonight/early tomorrow
> > (approximately 24 hours from now). I will try to give the patches a
> > run then. Would you like them tested individually or as a set?
>
> only_need_recalculate_for_low.patch
>
> should be enough.
With just that patch, no improvement.
Sorry about the delay. I got bumped from the machine yesterday.
The next reservable time is tomorrow night, otherwise, the machine is
booked solid for the next 36 hours.
Robin
next prev parent reply other threads:[~2012-06-06 9:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-01 15:54 Commit 722bc6b167 breaks booting on an 8TB system Robin Holt
2012-06-02 14:24 ` Ethan.kernel@gmail
2012-06-03 7:00 ` Yinghai Lu
2012-06-04 10:07 ` Robin Holt
2012-06-04 23:51 ` Yinghai Lu
2012-06-06 9:42 ` Robin Holt [this message]
2012-06-06 9:48 ` Robin Holt
2012-06-06 9:51 ` Ingo Molnar
2012-06-06 10:46 ` Robin Holt
2012-06-06 17:55 ` Yinghai Lu
2012-06-06 18:54 ` Robin Holt
2012-06-08 14:48 ` [tip:x86/urgent] x86/mm: Only add extra pages count for the first memory range during pre-allocation early page table space tip-bot for Yinghai Lu
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