linux-kernel - Re: [PATCH v6 0/7] tlb flush optimization on x86

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 for Android: free password hash cracker in your pocket

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

Date:	Fri, 18 May 2012 08:16:03 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Alex Shi <alex.shi@...el.com>
CC:	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, arnd@...db.de,
	rostedt@...dmis.org, fweisbec@...il.com, jeremy@...p.org,
	riel@...hat.com, luto@....edu, avi@...hat.com, len.brown@...el.com,
	dhowells@...hat.com, fenghua.yu@...el.com, borislav.petkov@....com,
	yinghai@...nel.org, ak@...ux.intel.com, cpw@....com,
	steiner@....com, akpm@...ux-foundation.org, penberg@...nel.org,
	a.p.zijlstra@...llo.nl, hughd@...gle.com,
	kamezawa.hiroyu@...fujitsu.com, viro@...iv.linux.org.uk,
	linux-kernel@...r.kernel.org, yongjie.ren@...el.com
Subject: Re: [PATCH v6 0/7] tlb flush optimization on x86

On 05/17/2012 01:42 PM, Alex Shi wrote:

> Thanks Peter Z, Peter Anvin, Nick Piggin, and many others' comments!
> 
> The main change of this version is on generic mmu_gather code.
> It was tested with arm cross-compiler.
> 
> Thanks Rongjie's testing, that show the real case performance gain.
> 
> Alex Shi
> 
> [PATCH v6 1/7] x86/tlb: unify TLB_FLUSH_ALL definition
> [PATCH v6 2/7] x86/tlb_info: get last level TLB entry number of CPU
> [PATCH v6 3/7] x86/flush_tlb: try flush_tlb_single one by one in
> [PATCH v6 4/7] x86/tlb: fall back to flush all when meet a THP large
> [PATCH v6 5/7] x86/tlb: add tlb_flushall_shift for specific CPU
> [PATCH v6 6/7] x86/tlb: enable tlb flush range support for generic
> [PATCH v6 7/7] x86/tlb: add tlb_flushall_shift knob into debugfs



Anyone like to pick up this patchset? It has benefit not only in theory,
but also in real word. And seems more modern CPU has more performance gain.

Thanks
Alex Shi
--
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/