From owner-freebsd-security@freebsd.org Tue Jan 16 15:31:45 2018 Return-Path: Delivered-To: freebsd-security@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 AAADBE75FB8 for ; Tue, 16 Jan 2018 15:31:45 +0000 (UTC) (envelope-from gordon@tetlows.org) Received: from mail-vk0-x22a.google.com (mail-vk0-x22a.google.com [IPv6:2607:f8b0:400c:c05::22a]) (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 680EA7E9DE for ; Tue, 16 Jan 2018 15:31:45 +0000 (UTC) (envelope-from gordon@tetlows.org) Received: by mail-vk0-x22a.google.com with SMTP id w201so3490117vkw.0 for ; Tue, 16 Jan 2018 07:31:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tetlows.org; s=google; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=lBYidnftZskZsOPC8anJsL044njEVyu2q658sTgc0ZQ=; b=gYD2pEBF9oFIuHdLDdkqk+EUo9Kwr0YRxxaxMlZZdVAE7hrHMZl1q0unGf4nTs0+ku shnh6xdJO4NtFUVQuIMPmxk6UrgI42BB/IdMwRJ8nVJZaiM0rUj0z2W/JikkdPyEDfej yB6xolsFS5ZiTkaaVecrNFOL/TOKx/3KCja+s= 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=lBYidnftZskZsOPC8anJsL044njEVyu2q658sTgc0ZQ=; b=FAqQPm2XMEKgTQVkNNzMW0Mc/pGlOk5txckOxzcfp0+KYhhF2m/sX8YCES6eh7JE00 N0xLCwuRXq7TpUOsCtYL76nUEiK4TnGwxKQnoKoLVZTE/zvh1mC4vf38WXDRPah+PStW cIqDtdajong67k5kE8M3iL8u0Tw12NKn6ZlMVnedX/ebkkEnqxrhoxC0xGerXN9VGqKg cjgNdrM1Y93hyH4C2OtMNhQTGH7b31T6JClmoS3G1ce5vWcDbbwarC1ERtScENHx+/Dl qrYM5YJhFSgOihsSP1pICBG837qp/+Y88uszWG7a3a31vn1BKjvbjs/54gf9rvDCCgp4 2PCA== X-Gm-Message-State: AKwxytcvtFqNE9Njus2hyPgb6yazqQSA47xRBDEG+iOs7oezIl8ByT0J 8hHAFFxBd8ok2NWqAMAfuo8KXAraWGhy5JTJo1/Z X-Google-Smtp-Source: ACJfBov0NzKsEFSC2SOH0OxQFnClhwJ67ic7otZgub8rKdj57kyoACLs+jrRLdnFr+rZ3rpWtlrEyhlJwxQFAvlXD4Y= X-Received: by 10.31.220.193 with SMTP id t184mr14501719vkg.103.1516116704321; Tue, 16 Jan 2018 07:31:44 -0800 (PST) MIME-Version: 1.0 Received: by 10.176.81.102 with HTTP; Tue, 16 Jan 2018 07:31:43 -0800 (PST) In-Reply-To: <20180116095730.GP1684@kib.kiev.ua> References: <20180108175751.GH9701@gmail.com> <20180113161026.GR1684@kib.kiev.ua> <20180116095730.GP1684@kib.kiev.ua> From: Gordon Tetlow Date: Tue, 16 Jan 2018 07:31:43 -0800 Message-ID: Subject: Re: Response to Meltdown and Spectre To: Konstantin Belousov Cc: freebsd-security Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jan 2018 15:31:45 -0000 On Tue, Jan 16, 2018 at 1:57 AM, Konstantin Belousov wrote: > On Mon, Jan 15, 2018 at 09:20:24PM -0800, Gordon Tetlow wrote: >> On Sat, Jan 13, 2018 at 8:10 AM, Konstantin Belousov >> wrote: >> > On Mon, Jan 08, 2018 at 09:57:51AM -0800, Gordon Tetlow wrote: >> >> Meltdown (CVE-2017-5754) >> >> ~~~~~~~~~~~~~~~~~~~~~~~~ >> >> Initial work can be tracked at https://reviews.freebsd.org/D13797. >> >> Please note this is a work in progress and some stuff is likely to be >> >> broken. >> > I consider this patch as ready for review now. >> >> Awesome! So, what's next? Do we have some testers we can solicit to >> beat on this? I believe des@ had a test case to try out? Based on >> where we are, what needs to be done to get this into the tree? >> Secondarily, what's needed to get this in shape for 10.3/10.4/11.1? > > As expected, nothing happens WRT review. Who is a good person to review this? alc? (I can't think of any other VM people out there). > Peter tested the patch, it seems to be fine. I put shims to allow i386 > to compile. My idea is to flip the default to non-PTI and commit the > patch as is today. Is there a reason to leave the PTI off in CURRENT? I'd rather turn it on and break some stuff to get the testing coverage than to leave it off. Gordon