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=-3.8 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 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 5F045C433E7 for ; Tue, 20 Oct 2020 07:52:47 +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 980962224F for ; Tue, 20 Oct 2020 07:52:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="wANjiabs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 980962224F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org 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=0TA+SgtnxIeOZDu0t3C30Buub5jLXK5BTMQElHCWg34=; b=wANjiabsVbL1fY5r9djpSwdjF ZyqHsxoRcOIrN4oY+IMeD16TwcuJ67sNkFQ+yioLkzLdQnMQs09PeQmAQP+NRXomRApuzD5Qft0gR xZpcK+69SXsqXPKixxdGeTK/Ej6J8V2ZWAfeKhta9fiLAjaeqmnu1BP41SYVoH/XPojSf+SRM2v5s OorQKTIqrIUD7IPOG8Z7iOnTw9FcrAbKm8w1hpFqNdVXRdxB5ARpaDLSWBSxYgJlC/Sq5dxQUbUU/ Ip+euK/Qjwn5lFMopwCRM7mhoOxQ/y5kpyRorSR6CmKofuCEJba7xBYYp55NJh5QtiL/pIntNYm/k crnFrZU9Q==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kUmQg-0003d2-71; Tue, 20 Oct 2020 07:51:34 +0000 Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kUmQe-0003ci-Is; Tue, 20 Oct 2020 07:51:32 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 258BC3011FE; Tue, 20 Oct 2020 09:51:31 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 0D36620116731; Tue, 20 Oct 2020 09:51:31 +0200 (CEST) Date: Tue, 20 Oct 2020 09:51:31 +0200 From: Peter Zijlstra To: Ard Biesheuvel Subject: Re: [PATCH] arm64: implement support for static call trampolines Message-ID: <20201020075131.GN2628@hirez.programming.kicks-ass.net> References: <20201019141247.25122-1-ardb@kernel.org> <20201019170550.GR2611@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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 , Catalin Marinas , Mark Brown , Frederic Weisbecker , Will Deacon , Linux ARM 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 Mon, Oct 19, 2020 at 07:23:20PM +0200, Ard Biesheuvel wrote: > I implemented a GCC plugin for this a while ago [0], but I guess we'd > need to see some evidence first that it will actually make a > difference. https://lkml.kernel.org/r/20201009174554.GS2611@hirez.programming.kicks-ass.net might provide fertile benchmarking ground. Of course, you'd need to port it to arm64 first :-) Anyway, Frederic will reportedly go work on getting that in shape and merged. There's also this: https://lkml.kernel.org/r/20200820164753.3256899-1-jackmanb@chromium.org _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel