From nobody Thu Nov 25 05:34:19 2021 X-Original-To: current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 33EDF18A9142 for ; Thu, 25 Nov 2021 05:34:29 +0000 (UTC) (envelope-from pi@freebsd.org) Received: from home.opsec.eu (home.opsec.eu [IPv6:2001:14f8:200::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4J065114ryz3PYg for ; Thu, 25 Nov 2021 05:34:29 +0000 (UTC) (envelope-from pi@freebsd.org) Received: from pi by home.opsec.eu with local (Exim 4.94.2 (FreeBSD)) (envelope-from ) id 1mq7Ol-0006eZ-8v; Thu, 25 Nov 2021 06:34:19 +0100 Date: Thu, 25 Nov 2021 06:34:19 +0100 From: Kurt Jaeger To: Konstantin Belousov Cc: current@freebsd.org Subject: Re: VDSO on amd64 Message-ID: References: List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 4J065114ryz3PYg X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-ThisMailContainsUnwantedMimeParts: N Hi! > I have mostly finished implementation of "proper" vdso for amd64 > native binaries, both 64bit and 32bit. Vdso wraps signal trampolines > into real dynamic shared object, which is prelinked into dynamically > linked image. Eleven years ago Giuseppe Cocomazzi posted this: http://lists.freebsd.org/pipermail/freebsd-hackers/2010-April/031553.html vdso and shared page patch My question: What's the difference between https://reviews.freebsd.org/D32960 and those changes from 2010 ? I'm curious and maybe a little explaination would help me understand what happened between 2010 and now. -- pi@opsec.eu +49 171 3101372 Now what ?