Date: Sun, 22 May 2005 15:10:28 +1000 From: Sam Lawrance <boris@brooknet.com.au> To: Colin Percival <cperciva@freebsd.org> Cc: freebsd-arch@freebsd.org Subject: Re: Scheduler fixes for hyperthreading Message-ID: <1116738628.867.33.camel@dirk.no.domain> In-Reply-To: <429012D3.6070803@freebsd.org> References: <428FC00B.3080909@freebsd.org> <aef05e1ae6104223181ad3cf03e11390@xcllnt.net> <428FD710.4060200@freebsd.org> <9e8314b53980a379445cc8c07086901d@xcllnt.net> <428FE788.8020408@freebsd.org><42900C01.10904@freebsd.org> <429012D3.6070803@freebsd.org>
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On Sat, 2005-05-21 at 22:04 -0700, Colin Percival wrote: > Sam Lawrance wrote: > > I'm just curious here... would the mac_seeotheruids policy help in > > obscuring the value of any information collected by a spy process? > > Yes. It would mean that the spy could steal an SSL certificate, but > not know whose SSL certificate it was. :-) Can the spy be sure that it's not just stealing fortunes though? I mean for example, can the cache timings shown on page 7 of your paper be used to reliably identify what the other thread on the CPU is?
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