From owner-freebsd-current@FreeBSD.ORG Tue Jan 6 00:57:28 2015 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id A9B7E569; Tue, 6 Jan 2015 00:57:28 +0000 (UTC) Received: from mail-wi0-x231.google.com (mail-wi0-x231.google.com [IPv6:2a00:1450:400c:c05::231]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 3F50166235; Tue, 6 Jan 2015 00:57:28 +0000 (UTC) Received: by mail-wi0-f177.google.com with SMTP id l15so4393446wiw.16; Mon, 05 Jan 2015 16:57:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=wN+NTfRr75yHAx/n2NyyrGU2K7qTnD3tKoBbofLgDeU=; b=SfzRX0fNvwKSvUzcl97XU7JuBY0QxNvjUD3/mIqZRV+Zkw5XVNSWO4ldvcS7NvMFC7 d2cL5MM4mLe49DrX2DBukqO/UwuxcnuRycJs8Qiw8uvLUGM5Gy7EX7+LUSMaQVuuPYch gTC6ltjuHh5MReyXxE+1oznaxhBC+2ddmrxgWzTeJjsf9Ys1q2nqJaPSOfts7g8kq78D Ww2ZhDbEp4qrug+b7gJwc92VnpLrEd33qj+0b7lUbvlIa28a5D/7d/2iKEnjSaYxP2e6 U8vlJcfzaz8+PApm9EZxvzwKWdYpiStqXeN58Dknzro6Zwt+pl2DGZr/Xxi/XYznSX5z eLsw== MIME-Version: 1.0 X-Received: by 10.180.109.46 with SMTP id hp14mr31637276wib.54.1420505846772; Mon, 05 Jan 2015 16:57:26 -0800 (PST) Received: by 10.27.5.207 with HTTP; Mon, 5 Jan 2015 16:57:26 -0800 (PST) In-Reply-To: <54AB306F.2070509@ignoranthack.me> References: <54AB306F.2070509@ignoranthack.me> Date: Mon, 5 Jan 2015 16:57:26 -0800 Message-ID: Subject: Re: Haswell CPU Feature From: Neel Natu To: Sean Bruno Content-Type: text/plain; charset=UTF-8 Cc: FreeBSD current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Jan 2015 00:57:28 -0000 Hi Sean, On Mon, Jan 5, 2015 at 4:46 PM, Sean Bruno wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > "\014" > > > 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 > > Features2=0x7ffafbbf,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"