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=-5.4 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 60571C07E85 for ; Tue, 11 Dec 2018 10:32:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 23FF42084A for ; Tue, 11 Dec 2018 10:32:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23FF42084A 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-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726272AbeLKKcf (ORCPT ); Tue, 11 Dec 2018 05:32:35 -0500 Received: from foss.arm.com ([217.140.101.70]:43828 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726130AbeLKKce (ORCPT ); Tue, 11 Dec 2018 05:32:34 -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 335451596; Tue, 11 Dec 2018 02:32:34 -0800 (PST) Received: from localhost (e113682-lin.copenhagen.arm.com [10.32.144.41]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C07333F6A8; Tue, 11 Dec 2018 02:32:33 -0800 (PST) Date: Tue, 11 Dec 2018 11:32:32 +0100 From: Christoffer Dall To: Julien Thierry Cc: linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu, marc.zyngier@arm.com, linux-arm-kernel@lists.infradead.org, linux-rt-users@vger.kernel.org, tglx@linutronix.de, rostedt@goodmis.org, bigeasy@linutronix.de Subject: Re: [PATCH v2 4/4] KVM: arm/arm64: vgic: Make vgic_cpu->ap_list_lock a raw_spinlock Message-ID: <20181211103232.GW30263@e113682-lin.lund.arm.com> References: <1543256807-9768-1-git-send-email-julien.thierry@arm.com> <1543256807-9768-5-git-send-email-julien.thierry@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1543256807-9768-5-git-send-email-julien.thierry@arm.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 26, 2018 at 06:26:47PM +0000, Julien Thierry wrote: > vgic_cpu->ap_list_lock must always be taken with interrupts disabled as > it is used in interrupt context. > > For configurations such as PREEMPT_RT_FULL, this means that it should > be a raw_spinlock since RT spinlocks are interruptible. > > Signed-off-by: Julien Thierry > Cc: Christoffer Dall > Cc: Marc Zyngier Acked-by: Christoffer Dall