linux-kernel - Re: cpu_no_speculation omissions?

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: <20180726141842.56ppkwy3d3hwr56p@suse.de>
Date:   Thu, 26 Jul 2018 16:18:42 +0200
From:   Joerg Roedel <jroedel@...e.de>
To:     Jiri Kosina <jikos@...nel.org>
Cc:     Alan Cox <alan@...ux.intel.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rich Felker <dalias@...c.org>, x86@...nel.org,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        David Woodhouse <dwmw@...zon.co.uk>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: cpu_no_speculation omissions?

On Thu, Jul 26, 2018 at 03:29:53PM +0200, Jiri Kosina wrote:
> On Mon, 16 Jul 2018, Alan Cox wrote:
> > The pre Silvermont atom cores are in order. When I did the original
> > list I didn't bother with all the 32bit cores as we didn't have any
> > 32bit mitigations then.
> 
> Now that 32bit PTI is in tip, I believe refresh of that list would be 
> justified. CCing Joerg.

Agreed, PTI for x86-32 is in -tip now and will likely make it into
v4.19. In-order cores (which should not be not affected by Meltdown)
should be on the list, otherwise they will get a huge performance hit.


Regards,

	Joerg