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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 72FAEC6FA8B for ; Fri, 9 Sep 2022 17:01:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bQagc/wIkKeTkyuIYvkonnB4uFjRKMZefKG5J3J2kbA=; b=41aOWVHzz0LR/s 4aLTjZMMgCokUgQKupYIjQ1opJ1y/KCkGRGeADpOkVun6WvOcAHw6Il/icJPoQH5wAYQvafKJnJud Vpet3NrE6uMi8s4fA8om29KErQhw60TzBEsr/hpYc7uf1RGwANvvbndTbPSvXKmS9y8K5+o5UCu03 1uNuIp/nAjLt1VXdIxiuZytt2+QlHsjcTSrvG5o0xKY4rI7fhGJ5RXOpeWQnaKgITul1gK9tOp5qo gnAUl7pOOxf7Nb2Atsva9rAnEX/vVDS3Hl54ImoAjIrqzMPI8NK35U8c9wZvmuMQXVZBUD9jYfgVG o9Ny9B4RX5SllbGCGF6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oWhMW-000X2H-5M; Fri, 09 Sep 2022 17:00:16 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oWhMG-000WqW-Bq for linux-arm-kernel@lists.infradead.org; Fri, 09 Sep 2022 17:00:02 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 829D4168F; Fri, 9 Sep 2022 10:00:03 -0700 (PDT) Received: from eglon.cambridge.arm.com (eglon.cambridge.arm.com [10.1.197.78]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6C3DF3F73D; Fri, 9 Sep 2022 09:59:56 -0700 (PDT) From: James Morse To: linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Suzuki K Poulose , Will Deacon , James Morse Subject: [PATCH 2/3] arm64: cpufeature: Expose get_arm64_ftr_reg() outside cpufeature.c Date: Fri, 9 Sep 2022 17:59:37 +0100 Message-Id: <20220909165938.3931307-3-james.morse@arm.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220909165938.3931307-1-james.morse@arm.com> References: <20220909165938.3931307-1-james.morse@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220909_100000_471332_92735EE3 X-CRM114-Status: GOOD ( 11.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org get_arm64_ftr_reg() returns the properties of a system register based on its instruction encoding. This is needed by erratum workaround in cpu_errata.c to modify the user-space visible view of id registers. Signed-off-by: James Morse --- arch/arm64/include/asm/cpufeature.h | 2 ++ arch/arm64/kernel/cpufeature.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index fd7d75a275f6..5c3317bc06c7 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -907,6 +907,8 @@ static inline unsigned int get_vmid_bits(u64 mmfr1) return 8; } +struct arm64_ftr_reg *get_arm64_ftr_reg(u32 sys_id); + extern struct arm64_ftr_override id_aa64mmfr1_override; extern struct arm64_ftr_override id_aa64pfr0_override; extern struct arm64_ftr_override id_aa64pfr1_override; diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index b6a4e97805a4..24f43ad02cd3 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -750,7 +750,7 @@ static struct arm64_ftr_reg *get_arm64_ftr_reg_nowarn(u32 sys_id) * returns - Upon success, matching ftr_reg entry for id. * - NULL on failure but with an WARN_ON(). */ -static struct arm64_ftr_reg *get_arm64_ftr_reg(u32 sys_id) +struct arm64_ftr_reg *get_arm64_ftr_reg(u32 sys_id) { struct arm64_ftr_reg *reg; -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel