From: Michal Hocko <mhocko@suse.com>
To: Yafang Shao <laoar.shao@gmail.com>
Cc: willy@infradead.org, Jan Kara <jack@suse.cz>,
Hugh Dickins <hughd@google.com>, Vlastimil Babka <vbabka@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Linux MM <linux-mm@kvack.org>
Subject: Re: [PATCH] mm: add vm event for page cache miss
Date: Tue, 2 Apr 2019 09:49:11 +0200 [thread overview]
Message-ID: <20190402074911.GQ28293@dhcp22.suse.cz> (raw)
In-Reply-To: <20190402074459.GP28293@dhcp22.suse.cz>
On Tue 02-04-19 09:44:59, Michal Hocko wrote:
> On Tue 02-04-19 15:38:02, Yafang Shao wrote:
[...]
> > Seems I missed this dicussion.
> > Could you pls. give a reference to it?
>
> The long thread starts here http://lkml.kernel.org/r/nycvar.YFH.7.76.1901051817390.16954@cbobk.fhfr.pm
Thinking about it some more this like falls into the same category as
timing attack where you measure the read latency or even watch for major
faults. The attacker would destroy the side channel by the read so the
attack would be likely impractical.
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2019-04-02 7:49 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 6:15 Yafang Shao
2019-04-02 7:23 ` Michal Hocko
2019-04-02 7:38 ` Yafang Shao
2019-04-02 7:44 ` Michal Hocko
2019-04-02 7:49 ` Michal Hocko [this message]
2019-04-02 7:56 ` Yafang Shao
2019-04-02 7:54 ` Yafang Shao
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