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=-6.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT 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 5FE6AC43387 for ; Fri, 18 Jan 2019 16:43:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3407521473 for ; Fri, 18 Jan 2019 16:43:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728127AbfARQnf (ORCPT ); Fri, 18 Jan 2019 11:43:35 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:34060 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727346AbfARQne (ORCPT ); Fri, 18 Jan 2019 11:43:34 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 888D980D; Fri, 18 Jan 2019 08:43:34 -0800 (PST) Received: from localhost (unknown [10.1.28.29]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4BB783F7BE; Fri, 18 Jan 2019 08:43:34 -0800 (PST) Received: from cmarinas by localhost with local (Exim 4.89) (envelope-from ) id 1gkXEy-00030U-5S; Fri, 18 Jan 2019 16:43:32 +0000 Date: Fri, 18 Jan 2019 16:43:31 +0000 From: Catalin Marinas To: Julien Thierry Cc: linux-arm-kernel@lists.infradead.org, mark.rutland@arm.com, daniel.thompson@linaro.org, marc.zyngier@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, christoffer.dall@arm.com, james.morse@arm.com, joel@joelfernandes.org Subject: Re: [PATCH v8 13/26] arm64: daifflags: Include PMR in daifflags restore operations Message-ID: <20190118164331.7l67555y3pcm37p6@localhost> References: <1546956464-48825-1-git-send-email-julien.thierry@arm.com> <1546956464-48825-14-git-send-email-julien.thierry@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1546956464-48825-14-git-send-email-julien.thierry@arm.com> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 08, 2019 at 02:07:31PM +0000, Julien Thierry wrote: > The addition of PMR should not bypass the semantics of daifflags. > > When DA_F are set, I bit is also set as no interrupts (even of higher > priority) is allowed. > > When DA_F are cleared, I bit is cleared and interrupt enabling/disabling > goes through ICC_PMR_EL1. > > Signed-off-by: Julien Thierry > Cc: Catalin Marinas > Cc: Will Deacon > Cc: James Morse Reviewed-by: Catalin Marinas