linux-kernel - Re: [PATCH 0 of 8] x86/smp function calls: convert x86 tlb flushes to use function calls

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

Message-ID: <48991B84.2080704@goop.org>
Date:	Tue, 05 Aug 2008 20:33:24 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	x86@...nel.org, Nick Piggin <nickpiggin@...oo.com.au>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [PATCH 0 of 8] x86/smp function calls: convert x86 tlb flushes
 to use function calls

Andi Kleen wrote:
> Jeremy Fitzhardinge <jeremy@...p.org> writes:
>
>   
>> 1. use smp_call_function_mask to implement cross-cpu TLB flushes
>>     
>
>
> Do you have any measurements comparing performance of the old and 
> the new call? TLB flush is quite time critical so we should be very
> careful here.

No.  What benchmark would you suggest?

    J

--
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/