From: Xishi Qiu <qiuxishi@huawei.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Yinghai Lu <yinghai@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
the arch/x86 maintainers <x86@kernel.org>,
Linn Crosetto <linn@hp.com>, Pekka Enberg <penberg@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux MM <linux-mm@kvack.org>
Subject: Re: [PATCH] mm,x86: fix span coverage in e820_all_mapped()
Date: Wed, 11 Dec 2013 11:55:15 +0800 [thread overview]
Message-ID: <52A7E223.9030605@huawei.com> (raw)
In-Reply-To: <52A7D415.6010908@zytor.com>
On 2013/12/11 10:55, H. Peter Anvin wrote:
> On 12/10/2013 05:35 PM, Xishi Qiu wrote:
>>
>> In this case, old code is right, but I discuss in another one that
>> you wrote above.
>>
>
> So is there a problem or not? I have lost track...
>
I think there is a problem.
e.g.
[start, end)=[8, 12), and [A, B)=[0, 10), [B, C)=[10,20),
then e820_all_mapped() will return 1, it spans two regions.
Thanks,
Xishi Qiu
> -hpa
>
>
>
>
--
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:[~2013-12-11 3:58 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-10 9:06 Xishi Qiu
2013-12-10 21:06 ` Yinghai Lu
2013-12-10 21:29 ` H. Peter Anvin
2013-12-10 21:52 ` Yinghai Lu
2013-12-10 22:51 ` H. Peter Anvin
2013-12-11 0:35 ` Yinghai Lu
2013-12-11 1:06 ` H. Peter Anvin
2013-12-11 1:42 ` Xishi Qiu
2013-12-11 1:35 ` Xishi Qiu
2013-12-11 2:55 ` H. Peter Anvin
2013-12-11 3:55 ` Xishi Qiu [this message]
2013-12-11 4:02 ` H. Peter Anvin
2013-12-11 4:39 ` Xishi Qiu
2013-12-11 5:27 ` H. Peter Anvin
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=52A7E223.9030605@huawei.com \
--to=qiuxishi@huawei.com \
--cc=akpm@linux-foundation.org \
--cc=hpa@zytor.com \
--cc=linn@hp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mingo@redhat.com \
--cc=penberg@kernel.org \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
--cc=yinghai@kernel.org \
/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