linux-kernel - Re: [PATCH 00/11] x86, memblock: Allocate memory near kernel image before SRAT parsed.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <157310e1-f8cb-4184-b58d-63cf9fa611ee@email.android.com>
Date:	Fri, 06 Sep 2013 08:47:45 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Tejun Heo <tj@...nel.org>, Wanpeng Li <liwanp@...ux.vnet.ibm.com>
CC:	rjw@...k.pl, lenb@...nel.org, tglx@...utronix.de, mingo@...e.hu,
	akpm@...ux-foundation.org, trenn@...e.de, yinghai@...nel.org,
	jiang.liu@...wei.com, wency@...fujitsu.com, laijs@...fujitsu.com,
	isimatu.yasuaki@...fujitsu.com, izumi.taku@...fujitsu.com,
	mgorman@...e.de, minchan@...nel.org, mina86@...a86.com,
	gong.chen@...ux.intel.com, vasilis.liaskovitis@...fitbricks.com,
	lwoodman@...hat.com, riel@...hat.com, jweiner@...hat.com,
	prarit@...hat.com, zhangyanfei@...fujitsu.com, x86@...nel.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH 00/11] x86, memblock: Allocate memory near kernel image before SRAT parsed.

Specifically there are a bunch of things which need to be below a certain address (which one varies.)

Tejun Heo <tj@...nel.org> wrote:
>Hello, Wanpeng.
>
>On Fri, Sep 06, 2013 at 04:58:11PM +0800, Wanpeng Li wrote:
>> What's the root reason memblock alloc from high to low? To reduce 
>> fragmentation or ...
>
>Because low memory tends to be more precious, it's just easier to pack
>everything towards the top so that we don't have to worry about which
>zone to use for allocation and fallback logic.
>
>Thanks.

-- 
Sent from my mobile phone.  Please pardon brevity and lack of formatting.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/