From owner-svn-src-head@freebsd.org Wed Apr 25 14:39:53 2018 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9F06BFA79F9; Wed, 25 Apr 2018 14:39:53 +0000 (UTC) (envelope-from tychon@freebsd.org) Received: from pb-smtp1.pobox.com (pb-smtp1.pobox.com [64.147.108.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4C13973E8E; Wed, 25 Apr 2018 14:39:53 +0000 (UTC) (envelope-from tychon@freebsd.org) Received: from pb-smtp1.pobox.com (unknown [127.0.0.1]) by pb-smtp1.pobox.com (Postfix) with ESMTP id 3E435E8C9F; Wed, 25 Apr 2018 10:39:47 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pobox.com; h=from :message-id:content-type:mime-version:subject:date:in-reply-to :cc:to:references; s=sasl; bh=HDC3/B/FwLUn6R1B3YoIrO/u5QE=; b=sr uf2IAOICJdxzBbByMpT/0h8kRisikHFx86jv8mlha9nH16Ua7zA3krraYQyXFWH9 40ujTfegd78n1vZ7rZexzSW6crDHvu6wA6soLvcO6QfMsjO0vsq9oFUQJ3gNos8M ipq2YoAe5i35wUq3WnSSVVFM5ljDpNB8PZNqXc11E= Received: from pb-smtp1.nyi.icgroup.com (unknown [127.0.0.1]) by pb-smtp1.pobox.com (Postfix) with ESMTP id 36CC7E8C9E; Wed, 25 Apr 2018 10:39:47 -0400 (EDT) Received: from [10.0.1.71] (unknown [146.115.68.244]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by pb-smtp1.pobox.com (Postfix) with ESMTPSA id 97EAFE8C9D; Wed, 25 Apr 2018 10:39:46 -0400 (EDT) From: Tycho Nightingale Message-Id: Mime-Version: 1.0 (Mac OS X Mail 11.3 \(3445.6.18\)) Subject: Re: svn commit: r332994 - head/sys/amd64/amd64 Date: Wed, 25 Apr 2018 10:39:45 -0400 In-Reply-To: Cc: "src-committers@freebsd.org" , "svn-src-all@freebsd.org" , "svn-src-head@freebsd.org" To: Oliver Pinter References: <201804251421.w3PELDIn066396@repo.freebsd.org> X-Mailer: Apple Mail (2.3445.6.18) X-Pobox-Relay-ID: 8026ADF6-4896-11E8-A2A9-44CE1968708C-09779102!pb-smtp1.pobox.com Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Apr 2018 14:39:54 -0000 > On Apr 25, 2018, at 10:30 AM, Oliver Pinter = wrote: >=20 > On Wednesday, April 25, 2018, Tycho Nightingale > wrote: > Author: tychon > Date: Wed Apr 25 14:21:13 2018 > New Revision: 332994 > URL: https://svnweb.freebsd.org/changeset/base/332994 = >=20 > Log: > If a trap is encountered upon executing iretq from within doreti() = the > hardware will ensure the stack pointer is aligned to a 16-byte > boundary before saving the fault state on the stack. >=20 > In the PTI case, handle this potential alignment adjustment by = copying > both frames independently while unwinding the stack in between. >=20 > Reviewed by: kib > Sponsored by: Dell EMC Isilon > Differential Revision: https://reviews.freebsd.org/D15183 = >=20 > Is there any plan to MFC this commit?=20 Yes, it seems reasonable to do that after 2 weeks. Tycho=