linux-kernel - Re: 答复: [PATCH 0/3] arm64: queued spinlocks and rw-locks

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]

Date:   Fri, 5 May 2017 18:28:45 +0300
From:   Yury Norov <ynorov@...iumnetworks.com>
To:     Will Deacon <will.deacon@....com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        pan xinhui <mnipxh@...mail.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Adam Wallis <awallis@...eaurora.org>,
        Andrew Pinski <Andrew.Pinski@...ium.com>,
        Arnd Bergmann <arnd@...db.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Jan Glauber <jglauber@...ium.com>,
        Mark Rutland <mark.rutland@....com>,
        Pan Xinhui <xinhui.pan@...ux.vnet.ibm.com>
Subject: Re: 答复: [PATCH 0/3] arm64: queued
 spinlocks and rw-locks

On Fri, May 05, 2017 at 01:26:40PM +0100, Will Deacon wrote:
> On Fri, May 05, 2017 at 01:53:03PM +0200, Peter Zijlstra wrote:
> > On Thu, May 04, 2017 at 11:28:09PM +0300, Yury Norov wrote:
> > > I don't think
> > > it's a real use case to have ticket spinlocks and queued rwlocks
> > 
> > There's nothing wrong with that combination. In fact, we merged qrwlock
> > much earlier than qspinlock.
> 
> ... and that's almost certainly the direction we'll go on arm64 too, not
> least because the former are a lot easier to grok.
> 
> Will

Hmm. Then I think I have to split patch 3 to rwlock and spinlock
parts, and allow user to enable them independently in config. 

Yury