From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 28EFF606A323 for ; Thu, 12 Nov 2026 11:49:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=G9ZUS8ni; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=NiDyh9CS 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-Unsubscribe-Post:List-Owner; bh=MKcG3X7dsKXAw4NNVjEt7ZV1vzPfMBBW0q4ysZTtxpk=; b=G9ZUS8nijLPr6Jshlo/9feCIJ3 MkmByc0eQOxs1YqiD50MMjmsL9Nf61o78GgJs6pDfeexmLShId9pZ8ZnsVhQxpSdHYY9O+kP1DBd7 ICCWNs5kSY453giMrbcA8s5GN4vRauSEZnI1cFTtwffzcVG3k9daSKxvrMqXVr/M/PqjR5anq1Hkg ol/xvnH3rRcXq91p/H6PBlcILIGcDTJh624NMFi6fo8HuFgBaPOqtkAhymmxXAk0MhaxdtNPtzGDu 7Rm1kgyW9rdUmu/j4TVh6dxtgoSFB8ccwGBBMOAYDsmahE5k5FulJ86lDrSpKDsbVUTyL1NuITUlF x06e0Lmg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRTIk-00000009mKG-0b6L; Thu, 12 Nov 2026 11:49:10 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRTIi-00000009mK3-28k4 for linux-arm-kernel@lists.infradead.org; Thu, 12 Nov 2026 11:49:09 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id A11E66186E; Thu, 12 Nov 2026 11:49:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F07851F00A05; Thu, 12 Nov 2026 11:49:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794484147; bh=MKcG3X7dsKXAw4NNVjEt7ZV1vzPfMBBW0q4ysZTtxpk=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=NiDyh9CSMf4fnMa1aXCvHZxu1XNPZLF0/Dl9XempRO4DnG2Rnv4Cg3GohFO4EBFz5 81EpjF4nYwMtW7DcmV9HhlhPBEuZxpj9uyD4iv4l+EKqjYt1CyiVf+ASqrTv29jCn3 vw7Cq+OEghXqj50p1/echU8vAtiEFP2pHx3+Q4f2zoGs8RITGhiQpBM9qNWaKvF/t9 ziJmXqbPJb/qA9zZhB4bk4YCtqBFzsbaLaPIXeFmU1UPyBqijY4Klvc2TZ7W6n9eeT xG4p1Q4rF39lKl8yaiQimmWpvUVrLuHhJOiY8tpsIULS66Q4FRARKhqorLxL8+DzQm tq7vXZ+PENnMA== Date: Thu, 12 Nov 2026 13:48:58 +0200 From: Mike Rapoport To: Arnd Bergmann Cc: linux-mm@kvack.org, Arnd Bergmann , Andrew Morton , Andreas Larsson , "Christophe Leroy (CS GROUP)" , Dave Hansen , "David Hildenbrand (Arm)" , Jason Gunthorpe , Linus Walleij , "Lorenzo Stoakes (ARM)" , Matthew Wilcox , Malin Jonsson , Richard Weinberger , Russell King , linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org Subject: Re: [PATCH v2 2/6] mm: remove ARCH_NEEDS_KMAP_HIGH_GET Message-ID: References: <20261112112528.1116405-1-arnd@kernel.org> <20261112112528.1116405-3-arnd@kernel.org> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261112112528.1116405-3-arnd@kernel.org> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-15.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Thu, Nov 12, 2026 at 12:25:24PM +0100, Arnd Bergmann wrote: > From: Arnd Bergmann > > Arm has stopped setting ARCH_NEEDS_KMAP_HIGH_GET, so this > is handled using the same wrappers across all architectures > now, which leaves room for simplification. > > Replace lock_kmap()/unlock_kmap() with open-coded spinlocks > and drop the now empty arch_kmap_local_high_get() and > kmap_high_unmap_local() helpers. > > Signed-off-by: Arnd Bergmann > --- > mm/highmem.c | 100 ++++++--------------------------------------------- > 1 file changed, 10 insertions(+), 90 deletions(-) Nice :) Acked-by: Mike Rapoport (Microsoft) -- Sincerely yours, Mike.