Date: Thu, 8 Nov 2007 19:45:20 +0000 (UTC) From: Colin Percival <cperciva@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/amd64/amd64 mp_machdep.c src/sys/i386/i386 mp_machdep.c Message-ID: <200711081945.lA8JjKcW080540@repoman.freebsd.org>
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cperciva 2007-11-08 19:45:20 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_7)
sys/amd64/amd64 mp_machdep.c
sys/i386/i386 mp_machdep.c
Log:
Change the default for hyperthreading (or, generally speaking, cases
where the L1 cache is shared between CPUs) to disabled for security
reasons. As in earlier releases, this can be changed by setting
machdep.hyperthreading_allowed=1 in /boot/loader.conf.
This is not an MFC -- no seatbelts in CURRENT.
Approved by: re (kensmith)
Security: See FreeBSD-SA-05:09.htt for background material.
Revision Changes Path
1.287.2.1 +1 -1 src/sys/amd64/amd64/mp_machdep.c
1.281.2.1 +1 -1 src/sys/i386/i386/mp_machdep.c
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