linux-kernel - Re: [PATCH] rcuwait: do not enter RCU protection unless a wakeup is needed

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: <CANRm+Cxpav5FqCBZoQv5BLnC160_RA3YDJc_CFabW7oMBFQ_5g@mail.gmail.com>
Date:   Wed, 20 Oct 2021 20:08:41 +0800
From:   Wanpeng Li <kernellwp@...il.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>, kvm <kvm@...r.kernel.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Oleg Nesterov <oleg@...hat.com>,
        Ingo Molnar <mingo@...nel.org>,
        "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
        Wanpeng Li <wanpengli@...cent.com>
Subject: Re: [PATCH] rcuwait: do not enter RCU protection unless a wakeup is needed

On Wed, 20 Oct 2021 at 20:04, Paolo Bonzini <pbonzini@...hat.com> wrote:
>
> On 20/10/21 14:01, Wanpeng Li wrote:
> > Yes, in the attachment.
> >
> >      Wanpeng
>
> This one does not have CONFIG_PREEMPT=y, let alone CONFIG_PREEMPT_RCU.
> It's completely impossible that this patch has an effect without those
> options.

Sorry, should be this one in the attachment.

    Wanpeng

Download attachment "kvm_rcu_config" of type "application/octet-stream" (250025 bytes)