Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp1865389ybb; Sun, 29 Mar 2020 15:38:21 -0700 (PDT) X-Google-Smtp-Source: ADFU+vswiN3yUZDxcpGQUnnKsWELdvknp1xDSaNqS2qx8iuHe97VCBk75ACHUG+L5Jv3HHLOHY8B X-Received: by 2002:a9d:4c8a:: with SMTP id m10mr7138732otf.114.1585521501613; Sun, 29 Mar 2020 15:38:21 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1585521501; cv=none; d=google.com; s=arc-20160816; b=ORXYeV9NUz3QmSPeoN5aQknAL6XuCMQ9UoCUVtPm5TDUPwrr1wesj/RjwWMZRpOr9Y r4jISLjt1XAYkfztNPLxtX8b97vEuC09hdi2KfrMRylMKJ4ZAMuca6bmesp9dO3Kv0hd hNa+W3pjzL1fRyzwgPbpCwgjGCylzmY44+rw/R/3uzzgjW/FiCislYU8iWpAQDaFhF4v PmyOGWLQ2haGw17r/Wl5xIzxskjThKmLc6NuIHGu4naHI5MyU8gsA0FTUSqOh9dFCWDY IJtcVAs3Cj0PrOji9jXf0en2Be6DFdE3wOKJ8Y3m0fmeXZczpmUZP/ZfbHrZmGKZhoxu vMNQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:dkim-signature; bh=YVBF0TF3Jp/vSw3JoPXlnMqZ/YFhM9WW9RRQSPXWhWg=; b=kKZfLAEXHqKj7sUbF3waurwn2TAqfgC9KjYrDjHIRz5MKyxmvnFe68PO2BXku1BQQX xtA0hVLKJskNMcTjORjgUMF85z09TzA9GkOfQ59rmlAdPsBUr64YNdlApUXuB1hjGnYR cygi+XMN6ZQ4VHhBhasTn0aQnA1QJeQhkWr7XRXTZrJz9quYI9eDS4IUFR7GfNXzjkfh PIUrZOGFcyjh0ecQSfQNaiDyymC9sw61hCELbr3SR00Q4EOF3PBiOZM6rR4WW101Ugp0 fzWbcDDSrPBbLVUc0MGKJFE9o6yucRmYN7YiTSAqXwTOdVb7e/aOp+hHnT6Yf36t6Kc5 Ov2w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=CT0BJrt8; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id n10si2387603otk.171.2020.03.29.15.38.08; Sun, 29 Mar 2020 15:38:21 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=CT0BJrt8; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728931AbgC2VWN (ORCPT + 99 others); Sun, 29 Mar 2020 17:22:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:32990 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728908AbgC2VWN (ORCPT ); Sun, 29 Mar 2020 17:22:13 -0400 Received: from mail-wr1-f52.google.com (mail-wr1-f52.google.com [209.85.221.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5457720787 for ; Sun, 29 Mar 2020 21:22:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585516932; bh=henbE984rrlQ2aisAaasFTvuukMP1h2D8fArnHeL2fE=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=CT0BJrt8haSInSNKAvdzi5ePELm8SItRufE5YA6TDyhxaIdAUXyIAyEu5sCQvraIO 7B7hzZJj1PWNebSgnBVIBZv/aOnrlDBUYtUuim18NZEbfTQRxiaKzXaywxnEAuaPyv axFQSAVAd+ZWaqROX3/J7A50OAG7O8DErYQkjiyk= Received: by mail-wr1-f52.google.com with SMTP id h9so18779711wrc.8 for ; Sun, 29 Mar 2020 14:22:12 -0700 (PDT) X-Gm-Message-State: ANhLgQ0f5tIWOkYhbJ9pLwxpJ5N14/+cxP1NY/nHXYXRKZptfD6FJ6nm B1fU/167A4mYq+J3b4RcXAyWLBvGWJBTkbkKjzPhhg== X-Received: by 2002:adf:e901:: with SMTP id f1mr11177142wrm.75.1585516930709; Sun, 29 Mar 2020 14:22:10 -0700 (PDT) MIME-Version: 1.0 References: <20200323183620.GD23230@ZenIV.linux.org.uk> <20200323183819.250124-1-viro@ZenIV.linux.org.uk> <20200328104857.GA93574@gmail.com> <20200328115936.GA23230@ZenIV.linux.org.uk> <20200329092602.GB93574@gmail.com> <489c9af889954649b3453e350bab6464@AcuMS.aculab.com> <9352bc55302d4589aaf2461c7b85fb6b@AcuMS.aculab.com> In-Reply-To: From: Andy Lutomirski Date: Sun, 29 Mar 2020 14:21:58 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [RFC][PATCH 01/22] x86 user stack frame reads: switch to explicit __get_user() To: Linus Torvalds Cc: David Laight , Ingo Molnar , Al Viro , Thomas Gleixner , X86 ML , LKML , Borislav Petkov Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Mar 29, 2020 at 11:16 AM Linus Torvalds wrote: > But that magical asm-goto-with-outputs patch probably won't land > upstream for a couple of years. I'm not that familiar with gcc politics, but what's the delay? ISTM having an actual upstream Linux asm-goto-with-outputs that works on clang might help light a fire under some butts and/or convince someone to pay a gcc developer to implement it on gcc. --Andy