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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS 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 97235C282C8 for ; Mon, 28 Jan 2019 09:42:30 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 5467420989 for ; Mon, 28 Jan 2019 09:42:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="NZsxdgB7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5467420989 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Subject:To:From:Message-ID:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0d6lDyiJ+9fYBkf1ifmC/Krfa9FFbZ9sdHGr1JP8qj4=; b=NZsxdgB7TFAYLV rt+s3rH2X76hggrHKvj6IGy37pwsKcQwPDFrLng3SZULGu/TB3rkkuLkdB+TE2comuY6bVD+OToES Bt8rvOKIkySd+cCF5N7g0zVzgoiAGl/D7IHwo1FXU89x4azPcxH0WYjSt5JNWGnA454l/wotDCnNl HhKL53gZUXCqauI5Xl3SXSJ3RCclk2bBVFqS0IXmtz/ttOcmqLjc97S2fVM/1udqcgeTZ/DWPowYS Zt8yND5qdUbdIegSSUVr/ShTHRNkjtkUzHaFFIkoPu9y7Tn27hDnDFigVHv4aUBmSbj2cSbWmYffP HszR4kpLeVig/cVVb+0A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1go3Qz-0003Hw-Bi; Mon, 28 Jan 2019 09:42:29 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1go3Qw-0003HY-RU for linux-arm-kernel@lists.infradead.org; Mon, 28 Jan 2019 09:42:28 +0000 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 CB342EBD; Mon, 28 Jan 2019 01:42:25 -0800 (PST) Received: from big-swifty.misterjones.org (big-swifty.cambridge.arm.com [10.1.39.122]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id DF0443F589; Mon, 28 Jan 2019 01:42:22 -0800 (PST) Date: Mon, 28 Jan 2019 09:42:21 +0000 Message-ID: <86d0ohw22q.wl-marc.zyngier@arm.com> From: Marc Zyngier To: Julien Thierry Subject: Re: [PATCH v9 08/26] arm64: Make PMR part of task context In-Reply-To: <1548084825-8803-9-git-send-email-julien.thierry@arm.com> References: <1548084825-8803-1-git-send-email-julien.thierry@arm.com> <1548084825-8803-9-git-send-email-julien.thierry@arm.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 EasyPG/1.0.0 Emacs/25.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Organization: ARM Ltd MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190128_014226_892445_3A640FEF X-CRM114-Status: GOOD ( 11.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, daniel.thompson@linaro.org, catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, christoffer.dall@arm.com, james.morse@arm.com, Oleg Nesterov , joel@joelfernandes.org, Dave Martin , 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+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 21 Jan 2019 15:33:27 +0000, Julien Thierry wrote: > > In order to replace PSR.I interrupt disabling/enabling with ICC_PMR_EL1 > interrupt masking, ICC_PMR_EL1 needs to be saved/restored when > taking/returning from an exception. This mimics the way hardware saves > and restores PSR.I bit in spsr_el1 for exceptions and ERET. > > Add PMR to the registers to save in the pt_regs struct upon kernel entry, > and restore it before ERET. Also, initialize it to a sane value when > creating new tasks. > > Signed-off-by: Julien Thierry > Reviewed-by: Catalin Marinas > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Oleg Nesterov > Cc: Dave Martin Reviewed-by: Marc Zyngier M. -- Jazz is not dead, it just smell funny. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel