From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 83265 invoked by alias); 24 Feb 2020 01:07:41 -0000 Mailing-List: contact libffi-discuss-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libffi-discuss-owner@sourceware.org Received: (qmail 83256 invoked by uid 89); 24 Feb 2020 01:07:40 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-12.3 required=5.0 tests=AWL,BAYES_00,HTML_MESSAGE,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 spammy=UD:A, HTo:U*libffi-discuss, trampoline, H*c:alternative X-HELO: mail-lj1-f177.google.com Received: from mail-lj1-f177.google.com (HELO mail-lj1-f177.google.com) (209.85.208.177) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 24 Feb 2020 01:07:39 +0000 Received: by mail-lj1-f177.google.com with SMTP id a13so8139331ljm.10 for ; Sun, 23 Feb 2020 17:07:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=moxielogic-com.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to:cc; bh=0gDJgJjfsTXZwwoP2SrQPGBjj2B2x6np0g5s23IwWzQ=; b=1rsSas54C3UJ6KRCYzaVtMSGN+M0VENOf77zbO+eQKmuyT7zEQEznT63W1wVWEqF2x CkZup8BdAgFM9RRdVFQqRrxIJqQaAsDpEDcGXUXl2AlqhO+1Ve0dGfrkh3Yqd6DWiKip 8xkIgRP3TvoJUdLb76QGhnCXh3mga7Hm7M9F8zIkAGYgagZjIBXzX/DQo//DwLRB1xto aGIfV8AQFdq5lIGrkxsLVpWN1hr2TmOVIfXrkgVtNLpReMlu21R+qAdKPS4cJWpdOVXY JTNqCMiz0p/Y3Km4CsLXjqyRedUlQxeyWc9xMfqs3WFc+2H7iDi4iPX8mBvrm4Ng1lXQ D3oA== MIME-Version: 1.0 From: Anthony Green Date: Mon, 24 Feb 2020 01:07:00 -0000 Message-ID: Subject: Another libffi ABI change and another release To: libffi-discuss Cc: s.mesoraca16@gmail.com, "H.J. Lu" Content-Type: text/plain; charset="UTF-8" X-IsSubscribed: yes X-SW-Source: 2020/txt/msg00011.txt HJ from Intel just contributed a set of ABI changing patches that will move us up to .so.8. These are changes increase trampoline sizes in order to support Intel's Control-Flow Enforcement Technology (CET), which is designed to counter return-oriented programming attacks. My understanding is that this might require changes to kernel trampoline emulators, like EMUTRAMP and S.A.R.A. (copying the author). The only other notable changes are some 32-bit PPC fixes and a soft-float MIPS correction. I just thought I'd float this idea in case anyone has any pending urgent changes. I'd like to get a new release out so we can upgrade the libffi in Fedora (which so far has not published the .7 version). AG