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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 9F9C9C433E0 for ; Mon, 22 Feb 2021 18:47:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6801A64E27 for ; Mon, 22 Feb 2021 18:47:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231584AbhBVSqw (ORCPT ); Mon, 22 Feb 2021 13:46:52 -0500 Received: from foss.arm.com ([217.140.110.172]:33386 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231336AbhBVSoO (ORCPT ); Mon, 22 Feb 2021 13:44:14 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AC72A1FB; Mon, 22 Feb 2021 10:43:24 -0800 (PST) Received: from C02TD0UTHF1T.local (unknown [10.57.51.127]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CBC3C3F73B; Mon, 22 Feb 2021 10:43:22 -0800 (PST) Date: Mon, 22 Feb 2021 18:43:20 +0000 From: Mark Rutland To: Hector Martin Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Catalin Marinas , James Morse , Marc Zyngier , Thomas Gleixner , Will Deacon Subject: Re: [PATCH 7/8 v1.5] arm64: Always keep DAIF.[IF] in sync Message-ID: <20210222184320.GD77517@C02TD0UTHF1T.local> References: <20210219113904.41736-8-mark.rutland@arm.com> <20210219172530.45805-1-marcan@marcan.st> <20210219182641.GB84857@C02TD0UTHF1T.local> <8c955dd3-8f40-3837-da33-7e117b357a35@marcan.st> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8c955dd3-8f40-3837-da33-7e117b357a35@marcan.st> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 23, 2021 at 02:39:11AM +0900, Hector Martin wrote: > On 20/02/2021 03.26, Mark Rutland wrote: > > On Sat, Feb 20, 2021 at 02:25:30AM +0900, Hector Martin wrote: > > > Apple SoCs (A11 and newer) have some interrupt sources hardwired to the > > > FIQ line. We implement support for this by simply treating IRQs and FIQs > > > the same way in the interrupt vectors. > > > > > > To support these systems, the FIQ mask bit needs to be kept in sync with > > > the IRQ mask bit, so both kinds of exceptions are masked together. No > > > other platforms should be delivering FIQ exceptions right now, and we > > > already unmask FIQ in normal process context, so this should not have an > > > effect on other systems - if spurious FIQs were arriving, they would > > > already panic the kernel. > > > > This looks good to me; I've picked this up and pushed out my arm64/fiq > > branch [1,2] incorporating this, tagged as arm64-fiq-20210219. > > > > I'll give this version a few days to gather comments before I post a v2. > > > > [1] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/fiq > > [2] https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/log/?h=arm64/fiqA > > Thanks! Any chance you can do a rebase on top of torvalds/master? Since > Marc's nVHE changes went in, we're going to need to add a workaround patch > for the M1's lack of nVHE mode, which is going to be in the next version of > my M1 bringup series - but right now that would involve telling people to > merge two trees to build a base to apply it on, which is sub-optimal. I generally try to base on a stable tag/commit, so I'd prefer to avoid rebasing the development branch until rc1 if possible. I've pushed out a new arm64-fiq-mainline-20210222 tag rebased atop torvalds/master: git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64-fiq-mainline-20210222 https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/tag/?h=arm64-fiq-mainline-20210222 ... leaving the main branch atop v5.11. Is that good enough for now? If that's painful for development I can shuffle the main branch along too. Thanks, Mark. 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=-8.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 838E5C433DB for ; Mon, 22 Feb 2021 18:44:49 +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 440B664DAF for ; Mon, 22 Feb 2021 18:44:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 440B664DAF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.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=akNvzx13gqt5454VL4duP8EcWlWrfAcXMx55EBTbV0U=; b=oXaP/518yOPbzY/hy2uQz7tiv bw7V4TdpVgdZc88Lh1L48YMrsKXmyY+gp/jDnDGCXG9QDbY4OF7sOxF+u/nvU/2QKklIueokpE4rU 7BX6+vc6ePJTqcnLbh7yOiAIDohiNyFnuDe+CYAfpbob2CcC584rKra/Q1tYlH2BqHja5coBhCvTK liL8C+brait71HlHBe0BJdOMY073rKlLn/5byfzzhC9cEh6EeHexUhgPnq0HuHepf0jEZ87JttXdS TXaMoEbgqtaPuZ2cfd3d+rxTPT/X4F0N107noOyFSU8mcar/MC7uzae8AEuETeTzdIapZhE3uR0ib lNUgMhSKQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lEGB7-0003Xh-JE; Mon, 22 Feb 2021 18:43:29 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lEGB5-0003WO-1M for linux-arm-kernel@lists.infradead.org; Mon, 22 Feb 2021 18:43:28 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AC72A1FB; Mon, 22 Feb 2021 10:43:24 -0800 (PST) Received: from C02TD0UTHF1T.local (unknown [10.57.51.127]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CBC3C3F73B; Mon, 22 Feb 2021 10:43:22 -0800 (PST) Date: Mon, 22 Feb 2021 18:43:20 +0000 From: Mark Rutland To: Hector Martin Subject: Re: [PATCH 7/8 v1.5] arm64: Always keep DAIF.[IF] in sync Message-ID: <20210222184320.GD77517@C02TD0UTHF1T.local> References: <20210219113904.41736-8-mark.rutland@arm.com> <20210219172530.45805-1-marcan@marcan.st> <20210219182641.GB84857@C02TD0UTHF1T.local> <8c955dd3-8f40-3837-da33-7e117b357a35@marcan.st> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <8c955dd3-8f40-3837-da33-7e117b357a35@marcan.st> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210222_134327_161204_D049A0CB X-CRM114-Status: GOOD ( 25.09 ) 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: Catalin Marinas , linux-kernel@vger.kernel.org, James Morse , Marc Zyngier , Thomas Gleixner , Will Deacon , 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 Tue, Feb 23, 2021 at 02:39:11AM +0900, Hector Martin wrote: > On 20/02/2021 03.26, Mark Rutland wrote: > > On Sat, Feb 20, 2021 at 02:25:30AM +0900, Hector Martin wrote: > > > Apple SoCs (A11 and newer) have some interrupt sources hardwired to the > > > FIQ line. We implement support for this by simply treating IRQs and FIQs > > > the same way in the interrupt vectors. > > > > > > To support these systems, the FIQ mask bit needs to be kept in sync with > > > the IRQ mask bit, so both kinds of exceptions are masked together. No > > > other platforms should be delivering FIQ exceptions right now, and we > > > already unmask FIQ in normal process context, so this should not have an > > > effect on other systems - if spurious FIQs were arriving, they would > > > already panic the kernel. > > > > This looks good to me; I've picked this up and pushed out my arm64/fiq > > branch [1,2] incorporating this, tagged as arm64-fiq-20210219. > > > > I'll give this version a few days to gather comments before I post a v2. > > > > [1] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/fiq > > [2] https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/log/?h=arm64/fiqA > > Thanks! Any chance you can do a rebase on top of torvalds/master? Since > Marc's nVHE changes went in, we're going to need to add a workaround patch > for the M1's lack of nVHE mode, which is going to be in the next version of > my M1 bringup series - but right now that would involve telling people to > merge two trees to build a base to apply it on, which is sub-optimal. I generally try to base on a stable tag/commit, so I'd prefer to avoid rebasing the development branch until rc1 if possible. I've pushed out a new arm64-fiq-mainline-20210222 tag rebased atop torvalds/master: git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64-fiq-mainline-20210222 https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/tag/?h=arm64-fiq-mainline-20210222 ... leaving the main branch atop v5.11. Is that good enough for now? If that's painful for development I can shuffle the main branch along too. Thanks, Mark. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel