From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29431C2D0A8 for ; Wed, 23 Sep 2020 18:13:04 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BDA1520791 for ; Wed, 23 Sep 2020 18:13:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="O881HAzS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BDA1520791 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=openwall.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:Mime-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=H1KxswrQm3FxeYHvHpkBJne1gSPBVe40S59AoqjQf8g=; b=O881HAzSiPus4Ed7fHDl7jdxL Id6H2StMsmBz4c4veYXBUfUgWdBOmGt+LMYsffdt99vbyZBFfF012QRJZb5czv4Ye4J18DCMvfNHy 8G7NIcNmatP/TwMuo41gc5nuv/dEuFS+atrUHWBH34KQ/qlwFXmLccgEiulRWIHRcr9YgPpsuqooW 5p0P0PpxPeYCjuvugzwIl3k0TWddLBY5qyYH61fIq4eQjhEBhHx00PyIJaBxosoPDwK3c8Ev9ZEfZ sSBzt8JFKphs2lzVW/YRwFaHgG1L4wxAJ5zY9leDsPEwwttnVZPGO3rGMNP1RhqljF0z0m1cKumKy TbDjByung==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kL9F2-0007kk-LV; Wed, 23 Sep 2020 18:11:44 +0000 Received: from mother.openwall.net ([195.42.179.200]) by merlin.infradead.org with smtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kL9Ez-0007jB-4O for linux-arm-kernel@lists.infradead.org; Wed, 23 Sep 2020 18:11:42 +0000 Received: (qmail 8044 invoked from network); 23 Sep 2020 18:11:39 -0000 Received: from localhost (HELO pvt.openwall.com) (127.0.0.1) by localhost with SMTP; 23 Sep 2020 18:11:39 -0000 Received: by pvt.openwall.com (Postfix, from userid 503) id 73B4DAB844; Wed, 23 Sep 2020 20:11:36 +0200 (CEST) Date: Wed, 23 Sep 2020 20:11:36 +0200 From: Solar Designer To: Florian Weimer Subject: Re: [PATCH v2 0/4] [RFC] Implement Trampoline File Descriptor Message-ID: <20200923181136.GA8846@openwall.com> References: <20200922215326.4603-1-madvenka@linux.microsoft.com> <20200923081426.GA30279@amd> <20200923091456.GA6177@openwall.com> <87wo0ko8v0.fsf@oldenburg2.str.redhat.com> Mime-Version: 1.0 Content-Disposition: inline In-Reply-To: <87wo0ko8v0.fsf@oldenburg2.str.redhat.com> User-Agent: Mutt/1.4.2.3i X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200923_141141_480298_D896F816 X-CRM114-Status: GOOD ( 13.47 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, Rich Felker , luto@kernel.org, kernel-hardening@lists.openwall.com, linux-api@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, oleg@redhat.com, madvenka@linux.microsoft.com, mic@digikod.net, linux-security-module@vger.kernel.org, David.Laight@ACULAB.COM, Pavel Machek , linux-fsdevel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Sep 23, 2020 at 04:39:31PM +0200, Florian Weimer wrote: > * Solar Designer: > > > While I share my opinion here, I don't mean that to block Madhavan's > > work. I'd rather defer to people more knowledgeable in current userland > > and ABI issues/limitations and plans on dealing with those, especially > > to Florian Weimer. I haven't seen Florian say anything specific for or > > against Madhavan's proposal, and I'd like to. (Have I missed that?) [...] > I think it's unnecessary for the libffi use case. [...] > I don't know if kernel support could > make sense in this context, but it would be a completely different > patch. Thanks. Are there currently relevant use cases where the proposed trampfd would be useful and likely actually made use of by userland - e.g., specific userland project developers saying they'd use it, or Madhavan intending to develop and contribute userland patches? Alexander _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel