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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 3CE7DC282D9 for ; Thu, 31 Jan 2019 15:00:25 +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 11D18218AF for ; Thu, 31 Jan 2019 15:00:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="X1szkxuo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 11D18218AF 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=T4tVTCH4V7al2Ot/PBEQAf5+HANNPCjvNSFAC4pJbNI=; b=X1szkxuoKqQafxhcGx23TGSwhH rGUCzBnlXiBdYsASj8qQMvJG1eONi+aXrKCeQkN+Wx4lobyiCjZ4lXORzkxq3tkXKoNeyQugWTcoS KqTFJ2vP02FjwcbWStgDgwF8OkMzfB1cLU7XU+Kyf7+NNE0IepXOXsi0L6GSsUMAeqxkcQQD33zg0 MOwzhxPQ+dRiFj6KP2/ABMXfgF5XXiWbtHuXedOzTq7DB3WwsV7QVOBxNES8enwCpIL63BTCU8+lQ nSgD4r2l2d22bhKts9ew80v2kxhtHSTdY5u5m0VI0riNXK+jKJ4IbHPC0bE7T1yUCaCUAHsBirvTu HK8L8VqQ==; 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 1gpDp9-0007PI-SA; Thu, 31 Jan 2019 15:00:15 +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 1gpDoJ-00068G-IG for linux-arm-kernel@lists.infradead.org; Thu, 31 Jan 2019 14:59:25 +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 4A45DEBD; Thu, 31 Jan 2019 06:59:23 -0800 (PST) Received: from e112298-lin.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 2DF2B3F59C; Thu, 31 Jan 2019 06:59:21 -0800 (PST) From: Julien Thierry To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v10 03/25] arm64: cpufeature: Set SYSREG_GIC_CPUIF as a boot system feature Date: Thu, 31 Jan 2019 14:58:41 +0000 Message-Id: <1548946743-38979-4-git-send-email-julien.thierry@arm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1548946743-38979-1-git-send-email-julien.thierry@arm.com> References: <1548946743-38979-1-git-send-email-julien.thierry@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190131_065923_607476_B16B4525 X-CRM114-Status: GOOD ( 14.61 ) 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, Julien Thierry , marc.zyngier@arm.com, catalin.marinas@arm.com, Suzuki K Poulose , will.deacon@arm.com, linux-kernel@vger.kernel.org, christoffer.dall@arm.com, james.morse@arm.com, joel@joelfernandes.org MIME-Version: 1.0 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 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 Acked-by: Marc Zyngier Cc: Catalin Marinas Cc: Will Deacon Cc: Suzuki K Poulose Cc: Marc Zyngier --- arch/arm64/kernel/cpufeature.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index f6d84e2..b9c0adf 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1207,7 +1207,7 @@ static void cpu_enable_address_auth(struct arm64_cpu_capabilities const *cap) { .desc = "GIC system register CPU interface", .capability = ARM64_HAS_SYSREG_GIC_CPUIF, - .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .type = ARM64_CPUCAP_STRICT_BOOT_CPU_FEATURE, .matches = has_useable_gicv3_cpuif, .sys_reg = SYS_ID_AA64PFR0_EL1, .field_pos = ID_AA64PFR0_GIC_SHIFT, -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel