From owner-freebsd-current@freebsd.org Thu Jan 4 18:27:42 2018 Return-Path: Delivered-To: freebsd-current@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 4FDAEEAC3BE for ; Thu, 4 Jan 2018 18:27:42 +0000 (UTC) (envelope-from gurenchan@gmail.com) Received: from mail-io0-x233.google.com (mail-io0-x233.google.com [IPv6:2607:f8b0:4001:c06::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 00E0A783AE for ; Thu, 4 Jan 2018 18:27:42 +0000 (UTC) (envelope-from gurenchan@gmail.com) Received: by mail-io0-x233.google.com with SMTP id v30so3155469iov.7 for ; Thu, 04 Jan 2018 10:27:41 -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 :cc; bh=4nux0pmwRDvJ360AaflPd5Vhtn3M+M2iB902u9DCz/g=; b=VR0CcxGB9X52rCzbN67jIYbajkoKSdB0G6Z0+M/9Zywl4Hf/5jAaxdoBUUYBbaLuJQ YQRW45McQZXw7eQ+bq0PZ+rhq21M0YoZR/UUM/arqCUZ1DxrYqB+MhxbRBs1xaUBzHiE RtGNWI97TcNs332etBbwx0QMTA4nXdq//oPP5ZH0p+uOBPYs9WqyQUZ6mhSowJWIfnrH +FxAVVlWeBXTm2hAGg+UR34rv5KtiALZc6rn+kVUIzD5aLE8U+4SDCWwMJMJsYn/ndqQ vbIN/ihxr3TsbKlW65yn6HtBTEKTzY1ovlcmUJnsy1YHhLc5mFPRMNfv+Cc0e4y0BWpg EJsA== 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:cc; bh=4nux0pmwRDvJ360AaflPd5Vhtn3M+M2iB902u9DCz/g=; b=dv9Osaj094XdBTupb/HpcoA8LXhybgK7ZMMwhUWwyp7MGZOHQHWoedpT0ojgeSO5z1 chg4W371ohEFxXa2PCPIngUvqFs0Qul8k6knSbgkm0ylS8yxo5nx+FWYalm3bJ0VuLoU 1jn87XhWBmMdhfCim3aI9LpPBHsjGT3gZE0wIKnLFzgsrGy6hHYpjv0H+Ufxzvc8zkZH lGrNbQUZDvjnx8Jw68W83NlhXfqouJ8xjN1m2V7Z0FLHpL7LHENDypqFqGNuX3+EUkzT 9ck8AD+e//w42tz+ynvvsXDCLdHeprECKgnTtb/ZY2zb1y8RnWsOc8l2jC0dHjmi825S vwPw== X-Gm-Message-State: AKwxytcwEa32upsz8OYh3TEFWS2Pa9786OKhl2+3gqZ9tSKLWPeXS1VX mONQf/UP8FpK+otuOlNW/5VtKIAJUZqfFTqKvBmjfg== X-Google-Smtp-Source: ACJfBosMP45t0I5mwT6RWDo7W8SigU9NX6/HRYZwO2cbulJO052o8N/44IAA9J4BOUpKWK6KopuRweNsgY+jHWnfW6U= X-Received: by 10.107.7.67 with SMTP id 64mr522103ioh.296.1515090461328; Thu, 04 Jan 2018 10:27:41 -0800 (PST) MIME-Version: 1.0 Received: by 10.107.164.203 with HTTP; Thu, 4 Jan 2018 10:27:40 -0800 (PST) In-Reply-To: <52b2f48c-332c-8984-838f-4902da0ebc81@7he.at> References: <9dda0496-be16-35c6-6c45-63d03b218ccb@protected-networks.net> <18376c97-3c0d-49c8-9483-96b95a84f3f1@7he.at> <52b2f48c-332c-8984-838f-4902da0ebc81@7he.at> From: blubee blubeeme Date: Fri, 5 Jan 2018 02:27:40 +0800 Message-ID: Subject: Re: Intel CPU design flaw - FreeBSD affected? // disabling _R_DTSC To: "Klaus P. Ohrhallinger" Cc: FreeBSD current Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.25 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: Thu, 04 Jan 2018 18:27:42 -0000 On Fri, Jan 5, 2018 at 2:25 AM, Klaus P. Ohrhallinger wrote: > On 04.01.2018 19:23, Klaus P. Ohrhallinger wrote: > > Hello, > > > > I disabled the ldtsc and ldtscp instructions for usermode on one of my > > production servers: > > > > Oops, RDTSC of course. > > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > I'd love to see if RISC-V is vulnerable to this? I think they are in the best position to capitalize on this clusterfk...