From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id DF62E138206 for ; Sat, 13 Jan 2018 00:07:01 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id ECD5CE0920; Sat, 13 Jan 2018 00:06:55 +0000 (UTC) Received: from mail-ot0-x230.google.com (mail-ot0-x230.google.com [IPv6:2607:f8b0:4003:c0f::230]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 83F2DE08A2 for ; Sat, 13 Jan 2018 00:06:55 +0000 (UTC) Received: by mail-ot0-x230.google.com with SMTP id s3so6447526otc.9 for ; Fri, 12 Jan 2018 16:06:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=gDVNiQXwyVpx9xDFmlrFWINDZSKTKAkwaXJzIkG04S8=; b=haiZGkqoyDoGGHPBNMo6JN/7roHqmFzYULD4LvtYo3b/y2G+pRb+ciZ7hoSJpceJmP SGg+gW17Jn2hNWe8uCBa2/jIMDfk0CrDqLoNHRe5UPavwkzQ0Dqox3/g6eDfKIvO58q/ btOJB5s5CFh6xU5upYMD/6/c9cBkz/9gwNrIcGUBDojblvxXsOAJ8RbzVmFvnluGFK5v vWbIRYR4fqOKsGwP/if37Z1SZzFarz7FLGpfU/LS+rGM5HqW/4ypC3Wt6XYDl9azi82r VdRkC9Z8cVpus4Og+XmvZF0Nx9CKJgtXOSbRhx6KkRUGFwkfzcE74iFD56qYIJ4ZOwRz L0TA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=gDVNiQXwyVpx9xDFmlrFWINDZSKTKAkwaXJzIkG04S8=; b=h7ZGr0vOqyOYnBZpsV9mwRCL3NNx28DDdQNSlI4hWJeEiWYSM43Ktje7/q+5G7e0ER dflY4CfpAp28pFjS3mm9cD7lANIPF8P1dRsKt2EZr71L89rELUB8EvoT7Mx7XzkA4aYq Y3Zsd0PX1sSX9DD/puOf/srM78ImpE4QNApzYp3tGuwgZ1FuaLpVCxzHkxMoJPXdcyEI ct+mK/jUy5Pj5E5HfEtHn9hEYsGdkUQ9bs5bO+SC4ZnYBzKP4BiCCjR19VYGz4jAqKHS Ak7b1FIKlwlDS5vGgkgPh15kdIArSPcZER5dltvczTbXx1F+Rar40uezBMvlEPD04rQn XfAw== X-Gm-Message-State: AKwxytejYCS1FlTPIKfouXfFEZIIQ7gb8R5p55kJ2QQHVsT8qvhNysDM dJeokQw/8qptAUmlpNkbiFC5VJXOR4oS34qtu5IfBYdk X-Google-Smtp-Source: ACJfBouxf7iYkH/LvnP+W9Onmgutdw5nszgN2AxPXbbeUo/bVLnk/lCFpGiGRjva4knILCq1w7c/drsVJEOaKweEoNE= X-Received: by 10.157.19.43 with SMTP id f40mr15157627ote.74.1515802014476; Fri, 12 Jan 2018 16:06:54 -0800 (PST) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.157.19.65 with HTTP; Fri, 12 Jan 2018 16:06:54 -0800 (PST) In-Reply-To: References: <8472733.tdHJfgl724@dell_xps> <34de3fde-16a1-aeac-2487-f7850de5d81b@charter.net> From: Adam Carter Date: Sat, 13 Jan 2018 11:06:54 +1100 Message-ID: Subject: Re: [gentoo-user] Microcode updates for "old" Intel CPU's To: gentoo-user@lists.gentoo.org Content-Type: multipart/alternative; boundary="001a113deb909f827c05629d2886" X-Archives-Salt: 7a7476eb-6759-4bcb-bfde-14b003ba3454 X-Archives-Hash: 7719095e0a33b05d8b4149205f9140a5 --001a113deb909f827c05629d2886 Content-Type: text/plain; charset="UTF-8" > They're new in general - they first appeared last week and they're > being treated as if they're related to Spectre. I've yet to see any > kind of official release of them, but that seems to be par for the > course for AMD the more I hunt around for documentation. It seems > like Suse first released it, and claimed that it disabled branch > prediction, whatever that means (certainly it can't completely disable > it without tanking performance). > From: https://www.phoronix.com/scan.php?page=news_item&px=AMD-Branch-Prediction-Still "I reached out to AMD and on Friday heard back. They wrote in an email to Phoronix that this Zen/17h microcode update does *not* disable branch prediction. They'll be working with SUSE to re-clarify this microcode update description" --001a113deb909f827c05629d2886 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

<= /span>
They're new in general - they first appeared last week and they&= #39;re
being treated as if they're related to Spectre.=C2=A0 I've yet to s= ee any
kind of official release of them, but that seems to be par for the
course for AMD the more I hunt around for documentation.=C2=A0 It seems
like Suse first released it, and claimed that it disabled branch
prediction, whatever that means (certainly it can't completely disable<= br> it without tanking performance).


&qu= ot;I reached out to AMD and on Friday heard back. They wrote in an email to= Phoronix that this Zen/17h microcode update does not disable bran= ch prediction. They'll be working with SUSE to re-clarify this microcod= e update description"
=C2=A0
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