From patchwork Thu Nov 3 20:23:03 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Rutland X-Patchwork-Id: 80726 Delivered-To: patch@linaro.org Received: by 10.140.97.247 with SMTP id m110csp826108qge; Thu, 3 Nov 2016 13:25:39 -0700 (PDT) X-Received: by 10.98.17.80 with SMTP id z77mr20000997pfi.166.1478204739290; Thu, 03 Nov 2016 13:25:39 -0700 (PDT) Return-Path: Received: from bombadil.infradead.org (bombadil.infradead.org. [2001:1868:205::9]) by mx.google.com with ESMTPS id k72si11516393pge.102.2016.11.03.13.25.39 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 03 Nov 2016 13:25:39 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) smtp.mailfrom=linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1c2OYP-0001Gs-2r; Thu, 03 Nov 2016 20:24:05 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1c2OYJ-0001E2-FM for linux-arm-kernel@lists.infradead.org; Thu, 03 Nov 2016 20:24:00 +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 39D54CF6; Thu, 3 Nov 2016 13:23:38 -0700 (PDT) Received: from localhost.localdomain (usa-sjc-mx-foss1.foss.arm.com [217.140.101.70]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9606A3F318; Thu, 3 Nov 2016 13:23:37 -0700 (PDT) From: Mark Rutland To: linux-arm-kernel@lists.infradead.org Subject: [PATCHv2 01/11] arm64: thread_info remove stale items Date: Thu, 3 Nov 2016 20:23:03 +0000 Message-Id: <1478204593-29145-2-git-send-email-mark.rutland@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1478204593-29145-1-git-send-email-mark.rutland@arm.com> References: <1478204593-29145-1-git-send-email-mark.rutland@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161103_132359_646105_E1146D94 X-CRM114-Status: UNSURE ( 7.39 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -8.3 (--------) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-8.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [217.140.101.70 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.4 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, lorenzo.pieralisi@arm.com, keescook@chromium.org, ard.biesheuvel@linaro.org, catalin.marinas@arm.com, suzuki.poulose@arm.com, will.deacon@arm.com, takahiro.akashi@linaro.org, james.morse@arm.com, luto@kernel.org, labbott@redhat.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org We have a comment claiming __switch_to() cares about where cpu_context is located relative to cpu_domain in thread_info. However arm64 has never had a thread_info::cpu_domain field, and neither __switch_to nor cpu_switch_to care where the cpu_context field is relative to others. Additionally, the init_thread_info alias is never used anywhere in the kernel, and will shortly become problematic when thread_info is moved into task_struct. This patch removes both. Signed-off-by: Mark Rutland Tested-by: Laura Abbott Cc: Catalin Marinas Cc: James Morse Cc: Will Deacon --- arch/arm64/include/asm/thread_info.h | 2 -- 1 file changed, 2 deletions(-) -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index e9ea5a6..76a9559 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -42,7 +42,6 @@ typedef unsigned long mm_segment_t; /* * low level task data that entry.S needs immediate access to. - * __switch_to() assumes cpu_context follows immediately after cpu_domain. */ struct thread_info { unsigned long flags; /* low level flags */ @@ -60,7 +59,6 @@ struct thread_info { .addr_limit = KERNEL_DS, \ } -#define init_thread_info (init_thread_union.thread_info) #define init_stack (init_thread_union.stack) /*