From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jeff Chua <jeff.chua.linux@gmail.com>,
Valdis.Kletnieks@vt.edu, Tomasz Chmielewski <mangoo@wpkg.org>,
Daniel J Blueman <daniel.blueman@gmail.com>,
Byron Stanoszek <bstanoszek@comtime.com>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hugh@veritas.com>
Subject: Re: 2.6.32-rc3: low mem - only 378MB on x86_32 with 64GB. Why?
Date: Sun, 11 Oct 2009 20:06:33 +1100 [thread overview]
Message-ID: <1255251993.2192.36.camel@pasglop> (raw)
In-Reply-To: <alpine.LFD.2.01.0910060731190.3432@localhost.localdomain>
On Tue, 2009-10-06 at 07:35 -0700, Linus Torvalds wrote:
>
> On Tue, 6 Oct 2009, Jeff Chua wrote:
> >
> > First, have to compile gcc so that it can compile 64 bit kernel. That's a
> > tough one!
>
> It's supposed to be easier these days, but I guess distros don't compile
> in support for 64-bit mode by default. Just using another machine may be
> the simplest approach, if you have any 64-bit distro around.
My experience is that most distros have a compiler capable of generating
a 64-bits kernel, if not 64-bits userspace (the later depends on whether
the "other" bits such as libgcc, glibc, etc... are there for 64-bits,
which is also generally available, though optional).
I regulary compile 64-bit kernels with a 32-bit Ubuntu or Debian on i386
Cheers,
Ben.
next prev parent reply other threads:[~2009-10-11 9:07 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-05 15:57 2.6.32-rc3: low mem - only 378MB on x86_32 with 64GB. Why? Jeff Chua
2009-10-05 18:12 ` Linus Torvalds
[not found] ` <b6a2187b0910051715y4ee63503y148ba2d7e24cad8e@mail.gmail.com>
2009-10-06 0:30 ` Linus Torvalds
2009-10-06 10:06 ` Tvrtko Ursulin
2009-10-06 11:01 ` Frans Pop
2009-10-14 21:32 ` Lennart Sorensen
2009-10-06 12:59 ` David Woodhouse
2009-10-06 14:26 ` Linus Torvalds
2009-10-11 9:08 ` Benjamin Herrenschmidt
[not found] ` <b6a2187b0910052312o662642b2teded3d19548b9151@mail.gmail.com>
2009-10-06 14:35 ` Linus Torvalds
[not found] ` <b6a2187b0910080926x303d3c9em8f70632fb19b6509@mail.gmail.com>
2009-10-08 16:35 ` Dave Hansen
[not found] ` <b6a2187b0910090928r648169dax86178a3e8b8c2f21@mail.gmail.com>
2009-10-10 18:10 ` Valdis.Kletnieks
2009-10-10 18:37 ` Linus Torvalds
2009-10-11 9:06 ` Benjamin Herrenschmidt [this message]
2009-10-11 17:34 ` Linus Torvalds
2009-10-06 16:50 ` Yuhong Bao
2009-10-05 18:42 ` Byron Stanoszek
2009-10-05 19:15 ` Dave Hansen
-- strict thread matches above, loose matches on Subject: below --
2009-10-05 19:42 Tomasz Chmielewski
2009-10-05 20:31 ` Valdis.Kletnieks
[not found] <drYiu-Pj-15@gated-at.bofh.it>
2009-10-05 20:05 ` Daniel J Blueman
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