Date: Wed, 10 Jul 2019 12:15:51 +0200 From: "damian@damianek.be" <damian@damianek.be> To: freebsd-hackers@freebsd.org Subject: Re: FreeBSD mds mitigation. Message-ID: <CA%2B6J3veBFdeTbeeQ_9EZo4L36A0cMREQjab8E6Z1LgNAvJAZ1Q@mail.gmail.com> In-Reply-To: <20190710095247.GC47193@kib.kiev.ua> References: <CA%2B6J3vcK_FxBbnx%2Bzyo3kFr3dB2LF5C4qQoiH5=bMd04aTjzKQ@mail.gmail.com> <20190710095247.GC47193@kib.kiev.ua>
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=C5=9Br., 10 lip 2019 o 11:52 Konstantin Belousov <kostikbel@gmail.com> napisa=C5=82(a): > 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 CP= U) > > > > 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=3D1 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'. > I install microcode in /usr/local/share/cpucontrol, load at boot. cpucontrol output: CPU: Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz (2594.05-MHz K8-class CPU) Origin=3D"GenuineIntel" Id=3D0x306f2 Family=3D0x6 Model=3D0x3f Steppi= ng=3D2 Features=3D0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,= MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=3D0x7ffefbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSS= E3,SDBG,FMA,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDL= T,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND> AMD Features=3D0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM> AMD Features2=3D0x21<LAHF,ABM> Structured Extended Features=3D0x37ab<FSGSBASE,TSCADJ,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,PQM,NFPU= SG> Structured Extended Features3=3D0x9c000400<IBPB,STIBP,SSBD> XSAVE Features=3D0x1<XSAVEOPT> VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID,VID,PostIntr TSC: P-state invariant, performance statistics --=20 damian@damianek.be
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