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 C1BF3D2F02C for ; Tue, 27 Jan 2026 13:38:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=1XuNWvBJUYaIOmIzpA8BuMoQZhRZt07aDpv0FA02CMk=; b=fn5STcwF6oLqesE11kx5YvsUJJ gWlpd300QIr8eml1Sih4bv8v7PUVfdTlRRILvW9rChb3VMDv69DySP7OwBb/rxDGScXZXi3BnZkUh f0or4z152qKx+VHVHxLPbbwl8+NGC8mT9gSaTtsryN5XXJfz4XtzjUKi2j+rM2B8uP7KnycdIbUwE IylMi2Ao1xnwCzrRs0HkoUjj445XPqcjlotKkAfDm13YMvShGRBNZWej0Qi1eM8VaMJC6JG+o0WdT kYx53HLDj9gOPrgFw0OCB74h11LlaqOyYMaVVChzHfyonv6sw17XLpnUpTYKsb2zG0MX3hYgiRXGq vDwF7p6A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vkjGW-0000000EJoU-0JOE; Tue, 27 Jan 2026 13:37:56 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vkjGT-0000000EJo9-0XSd for linux-arm-kernel@lists.infradead.org; Tue, 27 Jan 2026 13:37:54 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 807D9418CA; Tue, 27 Jan 2026 13:37:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D929BC116C6; Tue, 27 Jan 2026 13:37:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769521072; bh=CxMYKCSKw2QE4poORmA1SK+NSJK5nohfykCt6J2f6vE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ArLQaZsCjh7QGKVXWREIP5FBsspCF0Y1Kd/rsbF4FUqeIJT7Qb+5+VhW4rrZsSOQU 829gFp8JfY11+DBpQ+bhdyWjyG0eo08Ee7FcjrSIUZI8YYZtrr6rRnqTyHF0pNMHsA oSP1aICBL1SFdChwY2r5uf1xE3MmmILT9IJJHcMydIpfEZn1LT+fUNtGUNQhaApLoI wOhKBhClRmGlyennBmq7MVkZCVFo84K58v2RsHFxnyI5KL+8QLteyQQGpX5mvnHNHA 0+OOJNFaJo7kRYeTYz2OEe9m8wLRwZVHl9xFhyn6vKrdYnhNflMufRWgCCpmrI5UsS ib1xPR7D27czQ== Date: Tue, 27 Jan 2026 13:37:46 +0000 From: Will Deacon To: Nicolin Chen Cc: jean-philippe@linaro.org, robin.murphy@arm.com, joro@8bytes.org, jgg@nvidia.com, balbirs@nvidia.com, miko.lenczewski@arm.com, peterz@infradead.org, kevin.tian@intel.com, praan@google.com, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v10 0/8] iommu/arm-smmu-v3: Introduce an RCU-protected invalidation array Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260127_053753_210500_E9B29961 X-CRM114-Status: UNSURE ( 8.46 ) 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 On Mon, Jan 26, 2026 at 07:09:11PM -0800, Nicolin Chen wrote: > Changelog > v10: > * Rebase on arm/smmu/updates > * Add Reviewed-by from Pranjal > * Fix typo in kdoc and update comments > * Add dma_wmb() in arm_smmu_write_entry() > * Drop free_fn from arm_smmu_invs_unref() > * Replace refcount_t users with WRITE_ONCE/READ_ONCE() > * Verify num_trashes in arm_smmu_v3_invs_test_verify() I think it probably just slipped through the cracks, but Pranjal had a concern in v9 about the rwlock not being irqsafe: https://lore.kernel.org/r/aXND9YJTwm6om689@google.com Did that get discussed someplace that I missed? Will