linux-kernel - Re: [Patch] numa:x86_64: Cacheline aliasing makes for_each_populated

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: <4C758FE5.8050905@kernel.org>
Date:	Wed, 25 Aug 2010 14:49:25 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Robin Holt <holt@....com>, Jack Steiner <steiner@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, x86@...nel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Joerg Roedel <joerg.roedel@....com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Stable Maintainers <stable@...nel.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [Patch] numa:x86_64: Cacheline aliasing makes for_each_populated_zone
 extremely expensive -V2.

On 08/25/2010 11:56 AM, H. Peter Anvin wrote:
> On 08/25/2010 04:08 AM, Robin Holt wrote:
>>> So yes, this means adding an interface to the e820 allocator, even
>>> though it's scheduled to be replaced.  Because the new implementation
>>> will see the new interface and know they have to implement it, and the
>>> interface will make it clear just what exactly is expected of the
>>> implementation.
>>
>> What is the new allocator called?  Who is developing it?  When do you
>> expect it to be introduced into the kernel?
>>
> 
> memblock -- the core is already in the kernel and used by several
> non-x86 architectures, and so we want to switch x86 to use it, as well.
> 
> Ben Herrenschmidt and Yinghai Lu are driving this one.
> 
> As with anything in Linux it will get integrated when it is ready.  It
> would be nice if it was ready for .37, but it's not certain.

i put latest version against current tip/master in

git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-2.6-yinghai.git memblock

http://git.kernel.org/?p=linux/kernel/git/yinghai/linux-2.6-yinghai.git;a=shortlog;h=refs/heads/memblock

Thanks

Yinghai
--
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/