Date: Wed, 10 Jul 2019 12:52:47 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: "damian@damianek.be" <damian@damianek.be> Cc: freebsd-hackers@freebsd.org, freebsd-security@freebsd.org Subject: Re: FreeBSD mds mitigation. Message-ID: <20190710095247.GC47193@kib.kiev.ua> In-Reply-To: <CA%2B6J3vcK_FxBbnx%2Bzyo3kFr3dB2LF5C4qQoiH5=bMd04aTjzKQ@mail.gmail.com> References: <CA%2B6J3vcK_FxBbnx%2Bzyo3kFr3dB2LF5C4qQoiH5=bMd04aTjzKQ@mail.gmail.com>
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On Wed, Jul 10, 2019 at 09:06:31AM +0200, damian@damianek.be wrote: > Hello > > FreeBSD 11.2-RELEASE-p11 > CPU: Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz (2594.05-MHz K8-class CPU) > > sysctl hw.mds_disable was set to 3 (Automatic VERW or Software selection), > HT disabled in BIOS, and i install manually latest CPU microcode from > https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/ > > I wonder why hw.mds_disable_state shows > hw.mds_disable_state: software Broadwell > instead VERW? > > sysctl hw.mds_disable=1 causes hw.mds_disable_state: VERW > > These automatic selection works correctly? No idea. How did you installed the microcode ? Was it loaded ? Show the dmesg output after the 'cpucontrol -e /dev/cpuctl0'.
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