On Mon, 24 Apr 2006, Colin Percival wrote: CP> Adjust dangerous-shared-cache-detection logic from "all shared data CP> caches are dangerous" to "a shared L1 data cache is dangerous". This CP> is a compromise between paranoia and performance: Unlike the L1 cache, CP> nobody has publicly demonstrated a cryptographic side channel which CP> exploits the L2 cache -- this is harder due to the larger size, lower CP> bandwidth, and greater associativity -- and prohibiting shared L2 CP> caches turns Intel Core Duo processors into Intel Core Solo processors. CP> CP> As before, the 'machdep.hyperthreading_allowed' sysctl will allow even CP> the L1 data cache to be shared.
Any chance to MFC this to upcoming releases? Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- [EMAIL PROTECTED] *** ------------------------------------------------------------------------ _______________________________________________ cvs-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
