Date: Thu, 12 May 2005 17:38:32 -0700 From: Nate Lawson <nate@root.org> To: Jacques Vidrine <nectar@FreeBSD.org>, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: cvs commit: src/sys/amd64/amd64 mp_machdep.csrc/sys/amd64/include cpufunc.h src/sys/i386/i386 mp_machdep.c src/sys/i386/include cpufunc.h Message-ID: <4283F708.4020304@root.org> In-Reply-To: <20050513000600.8390E16A52A@hub.freebsd.org> References: <20050513000600.8390E16A52A@hub.freebsd.org>
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Jacques Vidrine wrote: > nectar 2005-05-13 00:05:56 UTC > > FreeBSD src repository > > Modified files: > sys/amd64/amd64 mp_machdep.c > sys/amd64/include cpufunc.h > sys/i386/i386 mp_machdep.c > sys/i386/include cpufunc.h > Log: > Add a knob for disabling/enabling HTT, "machdep.hyperthreading_allowed". > Default off due to information disclosure on multi-user systems. > > Submitted by: cperciva > Reviewed by: jhb > > Revision Changes Path > 1.254 +101 -0 src/sys/amd64/amd64/mp_machdep.c > 1.148 +8 -0 src/sys/amd64/include/cpufunc.h > 1.248 +101 -0 src/sys/i386/i386/mp_machdep.c > 1.144 +8 -0 src/sys/i386/include/cpufunc.h What's the problem? I hope this is not about timing attacks on crypto operations. -- Nate
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