From: Andrew Morton <akpm@linux-foundation.org>
To: Jerry <uulinux@gmail.com>
Cc: zhuwei.lu@archermind.com, tianfu.huang@archermind.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: negative left shift count when PAGE_SHIFT > 20
Date: Thu, 18 Jul 2013 14:39:28 -0700 [thread overview]
Message-ID: <20130718143928.4f9b45807956e2fdb1ee3a22@linux-foundation.org> (raw)
In-Reply-To: <1374166572-7988-1-git-send-email-uulinux@gmail.com>
On Fri, 19 Jul 2013 00:56:12 +0800 Jerry <uulinux@gmail.com> wrote:
> When PAGE_SHIFT > 20, the result of "20 - PAGE_SHIFT" is negative. The
> calculating here will generate an unexpected result. In addition, if
> PAGE_SHIFT > 20, The memory size represented by numentries was already
> integral multiple of 1MB.
>
If you tell me that you have a machine which has PAGE_SIZE=2MB and this
was the only problem which prevented Linux from running on that machine
then I'll apply the patch ;)
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2013-07-18 21:39 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-18 16:56 Jerry
2013-07-18 17:13 ` John Stoffel
2013-07-18 17:21 ` Jerry
2013-07-18 21:39 ` Andrew Morton [this message]
2013-07-18 23:47 ` Jerry
2013-07-19 21:57 ` Andrew Morton
2013-07-20 17:16 ` Jerry
2013-07-20 17:12 Jerry Zhou
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130718143928.4f9b45807956e2fdb1ee3a22@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=tianfu.huang@archermind.com \
--cc=uulinux@gmail.com \
--cc=zhuwei.lu@archermind.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox