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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 AFC13C352BE for ; Tue, 14 Apr 2020 21:32:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C34C20774 for ; Tue, 14 Apr 2020 21:32:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586899930; bh=f4F1vDQvVnqhKsm6bMVE8f0iBt1TzZeeo5A0mAu+gOI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=SJBUn98fmxB5MH2n+wNblXlzTyoI2NxU6/mvKQbb5QwiZz/ax5n9sz9UEWpSW7qzf jHREUzSSoGE8eog1iIBCslfry5niG1yvdcc7yY1tr8v2qJoBfqJ6lu7qrPpm8X34QH 6PecfSycE8Zgxuim0ICbKv6H3LOiPAUEWsz4+2GE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2633883AbgDNVcI (ORCPT ); Tue, 14 Apr 2020 17:32:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:40056 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2633846AbgDNVbe (ORCPT ); Tue, 14 Apr 2020 17:31:34 -0400 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D400F20774; Tue, 14 Apr 2020 21:31:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586899893; bh=f4F1vDQvVnqhKsm6bMVE8f0iBt1TzZeeo5A0mAu+gOI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZxMAEfiCTb8BuAiFEv3D2P8dg3IqYBZvRlKxWBYHsGGKh3KzaV5FRKxBtmGQBBYQl OZH7WRKeK/DzX0NMzizGcs2GQF0bHX1I49tyhko8IKhrajDEUtT2l2j++oXQSkOObj TZGD8b276CmrUwsWHzdvYkTIU9UlfhLXsWqBD6zs= From: Will Deacon To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu Cc: linux-kernel@vger.kernel.org, Will Deacon , Suzuki K Poulose , Mark Rutland , Marc Zyngier , Anshuman Khandual , Catalin Marinas , Sai Prakash Ranjan , Doug Anderson , kernel-team@android.com Subject: [PATCH 4/8] arm64: cpufeature: Remove redundant call to id_aa64pfr0_32bit_el0() Date: Tue, 14 Apr 2020 22:31:10 +0100 Message-Id: <20200414213114.2378-5-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200414213114.2378-1-will@kernel.org> References: <20200414213114.2378-1-will@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There's no need to call id_aa64pfr0_32bit_el0() twice because the sanitised value of ID_AA64PFR0_EL1 has already been updated for the CPU being onlined. Remove the redundant function call. Signed-off-by: Will Deacon --- arch/arm64/kernel/cpufeature.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 838fe5cc8d7e..7dfcdd9e75c1 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -792,9 +792,7 @@ void update_cpu_features(int cpu, * If we have AArch32, we care about 32-bit features for compat. * If the system doesn't support AArch32, don't update them. */ - if (id_aa64pfr0_32bit_el0(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1)) && - id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) { - + if (id_aa64pfr0_32bit_el0(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1))) { taint |= check_update_ftr_reg(SYS_ID_DFR0_EL1, cpu, info->reg_id_dfr0, boot->reg_id_dfr0); taint |= check_update_ftr_reg(SYS_ID_ISAR0_EL1, cpu, -- 2.26.0.110.g2183baf09c-goog 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=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 41463C2BB1D for ; 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Tue, 14 Apr 2020 21:31:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586899893; bh=f4F1vDQvVnqhKsm6bMVE8f0iBt1TzZeeo5A0mAu+gOI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZxMAEfiCTb8BuAiFEv3D2P8dg3IqYBZvRlKxWBYHsGGKh3KzaV5FRKxBtmGQBBYQl OZH7WRKeK/DzX0NMzizGcs2GQF0bHX1I49tyhko8IKhrajDEUtT2l2j++oXQSkOObj TZGD8b276CmrUwsWHzdvYkTIU9UlfhLXsWqBD6zs= From: Will Deacon To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu Subject: [PATCH 4/8] arm64: cpufeature: Remove redundant call to id_aa64pfr0_32bit_el0() Date: Tue, 14 Apr 2020 22:31:10 +0100 Message-Id: <20200414213114.2378-5-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200414213114.2378-1-will@kernel.org> References: <20200414213114.2378-1-will@kernel.org> MIME-Version: 1.0 Cc: Sai Prakash Ranjan , kernel-team@android.com, Anshuman Khandual , Marc Zyngier , linux-kernel@vger.kernel.org, Doug Anderson , Catalin Marinas , Will Deacon X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu There's no need to call id_aa64pfr0_32bit_el0() twice because the sanitised value of ID_AA64PFR0_EL1 has already been updated for the CPU being onlined. Remove the redundant function call. Signed-off-by: Will Deacon --- arch/arm64/kernel/cpufeature.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 838fe5cc8d7e..7dfcdd9e75c1 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -792,9 +792,7 @@ void update_cpu_features(int cpu, * If we have AArch32, we care about 32-bit features for compat. * If the system doesn't support AArch32, don't update them. */ - if (id_aa64pfr0_32bit_el0(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1)) && - id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) { - + if (id_aa64pfr0_32bit_el0(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1))) { taint |= check_update_ftr_reg(SYS_ID_DFR0_EL1, cpu, info->reg_id_dfr0, boot->reg_id_dfr0); taint |= check_update_ftr_reg(SYS_ID_ISAR0_EL1, cpu, -- 2.26.0.110.g2183baf09c-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm 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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, 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 19354C2BB85 for ; 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Tue, 14 Apr 2020 21:31:36 +0000 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D400F20774; Tue, 14 Apr 2020 21:31:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586899893; bh=f4F1vDQvVnqhKsm6bMVE8f0iBt1TzZeeo5A0mAu+gOI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZxMAEfiCTb8BuAiFEv3D2P8dg3IqYBZvRlKxWBYHsGGKh3KzaV5FRKxBtmGQBBYQl OZH7WRKeK/DzX0NMzizGcs2GQF0bHX1I49tyhko8IKhrajDEUtT2l2j++oXQSkOObj TZGD8b276CmrUwsWHzdvYkTIU9UlfhLXsWqBD6zs= From: Will Deacon To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu Subject: [PATCH 4/8] arm64: cpufeature: Remove redundant call to id_aa64pfr0_32bit_el0() Date: Tue, 14 Apr 2020 22:31:10 +0100 Message-Id: <20200414213114.2378-5-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200414213114.2378-1-will@kernel.org> References: <20200414213114.2378-1-will@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200414_143134_798670_448AB566 X-CRM114-Status: GOOD ( 11.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Sai Prakash Ranjan , kernel-team@android.com, Anshuman Khandual , Marc Zyngier , Suzuki K Poulose , linux-kernel@vger.kernel.org, Doug Anderson , Catalin Marinas , Will Deacon 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 There's no need to call id_aa64pfr0_32bit_el0() twice because the sanitised value of ID_AA64PFR0_EL1 has already been updated for the CPU being onlined. Remove the redundant function call. Signed-off-by: Will Deacon --- arch/arm64/kernel/cpufeature.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 838fe5cc8d7e..7dfcdd9e75c1 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -792,9 +792,7 @@ void update_cpu_features(int cpu, * If we have AArch32, we care about 32-bit features for compat. * If the system doesn't support AArch32, don't update them. */ - if (id_aa64pfr0_32bit_el0(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1)) && - id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) { - + if (id_aa64pfr0_32bit_el0(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1))) { taint |= check_update_ftr_reg(SYS_ID_DFR0_EL1, cpu, info->reg_id_dfr0, boot->reg_id_dfr0); taint |= check_update_ftr_reg(SYS_ID_ISAR0_EL1, cpu, -- 2.26.0.110.g2183baf09c-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel