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Date: Fri, 30 May 2014 11:48:00 +0200
Message-ID: <CAFLxGvwJV+PJchoNEJjnge9CuBrxFJ3TPxcN_M+j1CdAW-GmNA@mail.gmail.com>
Subject: Re: [RFC 2/2] x86_64: expand kernel stack to 16K
From: Richard Weinberger <richard.weinberger@gmail.com>
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To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Chinner <david@fromorbit.com>, Jens Axboe <axboe@kernel.dk>, Minchan Kim <minchan@kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org>, linux-mm <linux-mm@kvack.org>, "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>, Peter Zijlstra <a.p.zijlstra@chello.nl>, Mel Gorman <mgorman@suse.de>, Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, Hugh Dickins <hughd@google.com>, Rusty Russell <rusty@rustcorp.com.au>, "Michael S. Tsirkin" <mst@redhat.com>, Dave Hansen <dave.hansen@intel.com>, Steven Rostedt <rostedt@goodmis.org>

On Thu, May 29, 2014 at 5:24 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> So I'm not in fact arguing against Minchan's patch of upping
> THREAD_SIZE_ORDER to 2 on x86-64, but at the same time stack size does
> remain one of my "we really need to be careful" issues, so while I am
> basically planning on applying that patch, I _also_ want to make sure
> that we fix the problems we do see and not just paper them over.
>
> The 8kB stack has been somewhat restrictive and painful for a while,
> and I'm ok with admitting that it is just getting _too_ damn painful,
> but I don't want to just give up entirely when we have a known deep
> stack case.

If we raise the stack size on x86_64 to 16k, what about i386?
Beside of the fact that most of you consider 32bits as dead and must die... ;)

-- 
Thanks,
//richard

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