linux-kernel - Re: [kernel-hardening] rowhammer protection [was Re: Getting interrupt every million cache misses]

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Message-ID: <20161029220133.GE3827@amd>
Date:   Sun, 30 Oct 2016 00:01:33 +0200
From:   Pavel Machek <pavel@....cz>
To:     Daniel Gruss <daniel@...ss.cc>
Cc:     "kernel-hardening@...ts.openwall.com" 
        <kernel-hardening@...ts.openwall.com>,
        Mark Rutland <mark.rutland@....com>,
        Kees Cook <keescook@...omium.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        kernel list <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: Re: [kernel-hardening] rowhammer protection [was Re: Getting
 interrupt every million cache misses]

On Sat 2016-10-29 23:49:57, Daniel Gruss wrote:
> On 29.10.2016 23:45, Pavel Machek wrote:
> >indy/sandy/haswell/skylake, so I'll just use the generic version...?)
> 
> yes, generic might work, but i never tested it on anything that old...
> 
> on my system i have >30 bit flips per second (ivy bridge i5-3xxx) with the
> rowhammer-ivy test... sometimes even more than 100 per second...

Hmm, maybe I'm glad I don't have a new machine :-).

I assume you still get _some_ bitflips with generic "rowhammer"?

Best regards,
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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