linux-kernel - Re: [PATCH] arch_topology: Do not set llc_sibling if llc

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:   Mon, 11 Apr 2022 11:32:38 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     Qing Wang <wangqing@...o.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arch_topology: Do not set llc_sibling if llc_id is
 invalid

On Mon, Apr 11, 2022 at 09:37:36AM +0100, Sudeep Holla wrote:
> Hi Qing,
> 
> On Sun, Apr 10, 2022 at 07:36:19PM -0700, Qing Wang wrote:
> > From: Wang Qing <wangqing@...o.com>
> > 
> > When ACPI is not enabled, cpuid_topo->llc_id = cpu_topo->llc_id = -1, which
> > will set llc_sibling 0xff(...), this is misleading.
> > 
> > Don't set llc_sibling(default 0) if we don't know the cache topology.
> >
> 
> Makes sense to me and thanks for splitting the patch and pointing this out
> clearly. Your earlier patches mixed other things and made it hard to highlight
> this one.
> 
> Reviewed-by: Sudeep Holla <sudeep.holla@....com>
> 
> Hi Greg,
> 
> Can you pick this up ? IMO It can go as fix in -rc as it is kind of
> misleading though I am not sure if it is breaking any platform.

Will do, thanks.

greg k-h