Date: Mon, 5 Jan 2015 16:57:26 -0800 From: Neel Natu <neelnatu@gmail.com> To: Sean Bruno <sbruno@freebsd.org> Cc: FreeBSD current <freebsd-current@freebsd.org> Subject: Re: Haswell CPU Feature Message-ID: <CAFgRE9Fg=YtoOXD3P2b_w9-rF4QCrMqWxqa2SGLLN-Gx00koVQ@mail.gmail.com> In-Reply-To: <54AB306F.2070509@ignoranthack.me> References: <54AB306F.2070509@ignoranthack.me>
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Hi Sean, On Mon, Jan 5, 2015 at 4:46 PM, Sean Bruno <sbruno@ignoranthack.me> wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > "\014<b11>" > > > I don't know what this cpu feature2 flag means, but my x240 haswell > laptop has a "b11" feature2 set. > > sean > > dmesg | grep -i features > > Features=0xbfebfbff<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=0x7ffafbbf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,<b11>,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND> Congratulations, you have the ability to debug the Haswell silicon :-) >From the Intel SDM, "Table 3-20. Feature Information Returned in the ECX Register" 11 | SDBG | A value of 1 indicates the processor supports IA32_DEBUG_INTERFACE MSR for silicon debug. best Neel > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2 > > iQF8BAEBCgBmBQJUqzBsXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w > ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRCQUFENDYzMkU3MTIxREU4RDIwOTk3REQx > MjAxRUZDQTFFNzI3RTY0AAoJEBIB78oecn5ktYUH/A/2P6aNyBfBMhM7pRThx/DC > kulQbmHCuqOFwzJnE8qI/1YTvItNFG2sAsspd0iT2FmC2oEY/z6+j2ba2UizMJmH > +ppjseAzs4+GY2N6cxT0BHf1yNoMDqlwdeWVeSODCn2HCc9Cc9Wz0e0RUOpwQ4zx > Hmm1zI0Rla1izMIm437Lv38RFP1q/KaNLailcwgYrjvd90RaqobDeE2If3BYe8uv > qvYUeap3hRk0EOrjMRBuGyMSIGkssHa1NyfQFYEmzg3F9F8lgTnCBYlspovjacoy > I+LRWBUpOGS89vBxCjnLuBZO9fFajSJ0b6X8K8Cw4QWZmefPZWutujgf5ObzBhI= > =oXdb > -----END PGP SIGNATURE----- > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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