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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 7FA8EC282C8 for ; Mon, 28 Jan 2019 09:23:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 584F22087F for ; Mon, 28 Jan 2019 09:23:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726937AbfA1JXA (ORCPT ); Mon, 28 Jan 2019 04:23:00 -0500 Received: from foss.arm.com ([217.140.101.70]:41724 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726369AbfA1JW7 (ORCPT ); Mon, 28 Jan 2019 04:22:59 -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 D32E7EBD; Mon, 28 Jan 2019 01:22:58 -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 25DD83F589; Mon, 28 Jan 2019 01:22:55 -0800 (PST) Date: Mon, 28 Jan 2019 09:22:53 +0000 Message-ID: <86k1ipw2z6.wl-marc.zyngier@arm.com> From: Marc Zyngier To: Julien Thierry Cc: , , , , , , , , , Suzuki K Poulose Subject: Re: [PATCH v9 03/26] arm64: cpufeature: Set SYSREG_GIC_CPUIF as a boot system feature In-Reply-To: <1548084825-8803-4-git-send-email-julien.thierry@arm.com> References: <1548084825-8803-1-git-send-email-julien.thierry@arm.com> <1548084825-8803-4-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") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 21 Jan 2019 15:33:22 +0000, Julien Thierry wrote: > > It is not supported to have some CPUs using GICv3 sysreg CPU interface > while some others do not. > > Once ICC_SRE_EL1.SRE is set on a CPU, the bit cannot be cleared. Since > matching this feature require setting ICC_SRE_EL1.SRE, it cannot be > turned off if found on a CPU. > > Set the feature as STRICT_BOOT, if boot CPU has it, all other CPUs are > required to have it. > > Signed-off-by: Julien Thierry > Suggested-by: Daniel Thompson > Reviewed-by: Suzuki K Poulose > Reviewed-by: Mark Rutland > Acked-by: Catalin Marinas > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Suzuki K Poulose > Cc: Marc Zyngier Acked-by: Marc Zyngier M. -- Jazz is not dead, it just smell funny. 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,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 E151FC282CB for ; Mon, 28 Jan 2019 09:23:03 +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 B3CE02087F for ; Mon, 28 Jan 2019 09:23:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="dAogT2t6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B3CE02087F 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=MneHndovnm0+I8W/fyfyb+WXbtpmEGb9mXV131hhfRE=; b=dAogT2t6LF7OEt FI7aF9LqxmU7dGfpIFAz7i2vrqDL6w3Otealsc8Ur6A1XnjSAkBtmofyn1OMogYPYmQBuuCWdBHsV JqhfUbxHOZF4ru29pyTnyd9OwnRTT91qomc8zCibhYWiRZGdLoaYbiGGnsgLcWH2qzTCGwendFlKD yPZ/AEpgfwB8W204r4BLoVaaiYP6iZtTiqwbXquClLLsfLK+pyCkRLxZFBjsllxKG++WaQC+lzOPE +poywJHbUMZUHXPt4Id6qPtqRd+Lv+Vn3KI4uMcM47EhZigcJBojGnGcN/n/d5uaU37MZARg6SgA3 BucliQDsEIjNUMafLUQA==; 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 1go38A-0000bo-NJ; Mon, 28 Jan 2019 09:23:02 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1go387-0000bR-Cx for linux-arm-kernel@lists.infradead.org; Mon, 28 Jan 2019 09:23:00 +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 D32E7EBD; Mon, 28 Jan 2019 01:22:58 -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 25DD83F589; Mon, 28 Jan 2019 01:22:55 -0800 (PST) Date: Mon, 28 Jan 2019 09:22:53 +0000 Message-ID: <86k1ipw2z6.wl-marc.zyngier@arm.com> From: Marc Zyngier To: Julien Thierry Subject: Re: [PATCH v9 03/26] arm64: cpufeature: Set SYSREG_GIC_CPUIF as a boot system feature In-Reply-To: <1548084825-8803-4-git-send-email-julien.thierry@arm.com> References: <1548084825-8803-1-git-send-email-julien.thierry@arm.com> <1548084825-8803-4-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_012259_438966_3687728E X-CRM114-Status: GOOD ( 14.42 ) 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, Suzuki K Poulose , catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, christoffer.dall@arm.com, james.morse@arm.com, joel@joelfernandes.org, 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 15:33:22 +0000, Julien Thierry wrote: > > It is not supported to have some CPUs using GICv3 sysreg CPU interface > while some others do not. > > Once ICC_SRE_EL1.SRE is set on a CPU, the bit cannot be cleared. Since > matching this feature require setting ICC_SRE_EL1.SRE, it cannot be > turned off if found on a CPU. > > Set the feature as STRICT_BOOT, if boot CPU has it, all other CPUs are > required to have it. > > Signed-off-by: Julien Thierry > Suggested-by: Daniel Thompson > Reviewed-by: Suzuki K Poulose > Reviewed-by: Mark Rutland > Acked-by: Catalin Marinas > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Suzuki K Poulose > Cc: Marc Zyngier Acked-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