From owner-freebsd-stable@freebsd.org Fri Jan 19 21:27:33 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4C666EC974A for ; Fri, 19 Jan 2018 21:27:33 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost2.sentex.ca (smarthost2.sentex.ca [IPv6:2607:f3e0:80:80::2]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client CN "smarthost.sentex.ca", Issuer "smarthost.sentex.ca" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 18E96768C1 for ; Fri, 19 Jan 2018 21:27:33 +0000 (UTC) (envelope-from mike@sentex.net) Received: from lava.sentex.ca (lava.sentex.ca [IPv6:2607:f3e0:0:5::11]) by smarthost2.sentex.ca (8.15.2/8.15.2) with ESMTPS id w0JLRVhK097882 (version=TLSv1 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Fri, 19 Jan 2018 16:27:32 -0500 (EST) (envelope-from mike@sentex.net) Received: from [192.168.43.26] (saphire3.sentex.net [192.168.43.26]) by lava.sentex.ca (8.15.2/8.15.2) with ESMTP id w0JLRTu4039578; Fri, 19 Jan 2018 16:27:29 -0500 (EST) (envelope-from mike@sentex.net) Subject: Re: Ryzen issues on FreeBSD ? To: Pete French , freebsd-stable@freebsd.org References: <8e842dec-ade7-37d1-6bd8-856ea1a827ca@sentex.net> <8dcf6cc8fad788ac8168a4a9f392b02e@foolishgames.com> <23c1d162-dcd8-c422-3114-d70b65b6c271@sentex.net> <00875e4d-740f-63f1-496c-6cda82b1a403@ingresso.co.uk> From: Mike Tancsa Organization: Sentex Communications Message-ID: Date: Fri, 19 Jan 2018 16:27:29 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: <00875e4d-740f-63f1-496c-6cda82b1a403@ingresso.co.uk> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.78 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Jan 2018 21:27:33 -0000 On 1/19/2018 4:14 PM, Pete French wrote: > To be honest this thread has put me off building my machine, the pile of > boxes with motherboard, case, cpu and ram is still sitting next to me > desk at work! It is quite discouraging, isnt it :( From my POV however, I really want a "plan b" to Spectre / Meltdown that at least slows down attackers. On a few servers, I do have ways to detect after that fact intrusions (tripwire etc), but I want to mitigate this attack from happening in the first place as much as possible. Supposedly Spectre exploits on AMD are MUCH harder (or so says AMD at least) so I am hoping I can at least have this as an option. We even ordered a Tyan Epyc based board to see what its like too. ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/