From patchwork Wed Aug 23 13:13:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Elisei X-Patchwork-Id: 13362395 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 B0E0FEE49A0 for ; Wed, 23 Aug 2023 13:18:59 +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=fA8E9IO3xZxLZ63GaiVBisjad95DVS4WQRVhlOkI44s=; b=xO2BDqL6WpTtlD TqfLw3WSd8WGBoHXiw82JDDkjXwg2fofFsgRSb0Eb4+SinjuUECHIpYpoDtlpz1uMzlF4g7yKIgV8 2PsGmmJCssBb7F2YGzE23Bmzhfb+Ol/X4Grg4YZ0Y4zAE4RaB2gVlFtf8WA5++f2a3xQJLSgptolP wSWOzNduhQPco/ctXg2cKtupCZZD9CA0BWTV0YXJ+AZdo5xh0FoZ4vDbBybNxQiyIIZhf6YzK5S1W BzNyAgjtiuuOH2lHzkXWcPzskH12fZNVUENvCApVJEce0b7Mh7w0GtX8AedPQ7+VfVbBgFF8gvT00 2h7nIfXYPizHDqE+6pog==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qYnkl-000eqM-1L; Wed, 23 Aug 2023 13:18:31 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qYnkP-000edH-0y for linux-arm-kernel@lists.infradead.org; Wed, 23 Aug 2023 13:18:11 +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 D315F15DB; Wed, 23 Aug 2023 06:18:48 -0700 (PDT) Received: from e121798.cable.virginm.net (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 799E43F740; Wed, 23 Aug 2023 06:18:02 -0700 (PDT) From: Alexandru Elisei To: catalin.marinas@arm.com, will@kernel.org, oliver.upton@linux.dev, maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, arnd@arndb.de, akpm@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, mhiramat@kernel.org, rppt@kernel.org, hughd@google.com Cc: pcc@google.com, steven.price@arm.com, anshuman.khandual@arm.com, vincenzo.frascino@arm.com, david@redhat.com, eugenis@google.com, kcc@google.com, hyesoo.yu@samsung.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH RFC 37/37] arm64: mte: Enable tag storage management Date: Wed, 23 Aug 2023 14:13:50 +0100 Message-Id: <20230823131350.114942-38-alexandru.elisei@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230823131350.114942-1-alexandru.elisei@arm.com> References: <20230823131350.114942-1-alexandru.elisei@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230823_061809_386276_66607ADB X-CRM114-Status: UNSURE ( 7.79 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Everything is in place, enable tag storage management. Signed-off-by: Alexandru Elisei --- arch/arm64/kernel/mte_tag_storage.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/kernel/mte_tag_storage.c b/arch/arm64/kernel/mte_tag_storage.c index 1ccbcc144979..18264bc8f590 100644 --- a/arch/arm64/kernel/mte_tag_storage.c +++ b/arch/arm64/kernel/mte_tag_storage.c @@ -399,6 +399,12 @@ static int __init mte_tag_storage_activate_regions(void) } ret = reserve_metadata_storage(ZERO_PAGE(0), 0, GFP_HIGHUSER_MOVABLE); + if (ret) { + pr_info("MTE tag storage disabled"); + } else { + static_branch_enable(&metadata_storage_enabled_key); + pr_info("MTE tag storage enabled\n"); + } return ret; }