linux-kernel - Re: [PATCH 6/7] xen/evtch: use smp barriers for user event ring

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: <5cef0d0e-8f03-7cd2-4246-268a67a87dc5@suse.com>
Date:   Mon, 8 Feb 2021 10:38:33 +0100
From:   Jan Beulich <jbeulich@...e.com>
To:     Juergen Gross <jgross@...e.com>
Cc:     Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org
Subject: Re: [PATCH 6/7] xen/evtch: use smp barriers for user event ring

On 06.02.2021 11:49, Juergen Gross wrote:
> The ring buffer for user events is used in the local system only, so
> smp barriers are fine for ensuring consistency.
> 
> Reported-by: Andrew Cooper <andrew.cooper3@...rix.com>
> Signed-off-by: Juergen Gross <jgross@...e.com>

Reviewed-by: Jan Beulich <jbeulich@...e.com>

Albeit I think "local system" is at least ambiguous (physical
machine? VM?). How about something like "is local to the given
kernel instance"?

Jan