From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 265BE469847 for ; Tue, 4 Aug 2026 14:21:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785853314; cv=none; b=M9lVe1CjomAsMKmlhiLfzGb7myeLhASg7AatTF998KEhCU0F8AO5ftPV6zXuc54o3Gy2zP64x5T6SPjW1ROF/SH7TJzVddm0IW5/wDNAbLP11As8FVuuXBnXG3LqARCvJUNyexPkzeZ4Od/VjUmayKAvSnBP66dPLB4BTIj2JIw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785853314; c=relaxed/simple; bh=SXuWvCMPHuA58AjXtFE+LgWsCi3knhvI6g6+wWexqKo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Mk1122imQWYjnH2v9Q/3caFSirMxzeEh2fyhMZ8xrTT8rWzmHvo90ADZUTj0QkKGY+AElR/ZQk+bjGmhGfWQJZ/p/jZwiHEmHy+tJahEigRnJMqhIg/EJq4a5w5cArXqxfT1+uvzas/AxU92anZa6qx+K0WyrATlZf20iHWr4tc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MxMkUlSE; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MxMkUlSE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B384E1F000E9; Tue, 4 Aug 2026 14:21:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785853293; bh=SXuWvCMPHuA58AjXtFE+LgWsCi3knhvI6g6+wWexqKo=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=MxMkUlSEMSyl400fcanujca9MerVDMrD+X4oLiAd/6QakFTQntELana5HEO7gRi5t XPEM85RdN1R3ZTnD/xvim7V6SOf2UZqnnggSVctyn4EfUhZzpcfNfStR3eD3uDNTo8 zMkbXlqd0+y59qG8qIzuHUI3csXqxDbSUIxGMUISLjL5ypbS7U0qJYx/hWBt6tcl9F ulIR9jO+8mNGR9T1zgyBFYI0PJA8q6N6vzOrhfDLY9YhGXFv5LFCK82qWijBGNJ67L fwuAB44t/3WlDi1dO/cxpa3c87H044QW4vqNNJyx1/Gy9bQC24JrJ1nkmHOJt188el jjGOjgbxXcdGw== Date: Tue, 4 Aug 2026 15:21:14 +0100 From: "Lorenzo Stoakes (ARM)" To: "David Hildenbrand (Arm)" Cc: "Christoph Lameter (Ampere)" , Mark Rutland , Yang Shi , Ryan Roberts , dennis@kernel.org, tj@kernel.org, urezki@gmail.com, catalin.marinas@arm.com, will@kernel.org, akpm@linux-foundation.org, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Linus Torvalds , Jason Gunthorpe Subject: Re: [RFC v2 PATCH 0/16] Optimize this_cpu_*() ops for non-x86 (ARM64 for this series) Message-ID: References: <20260715180455.515692-1-yang@os.amperecomputing.com> <0344c559-1959-4531-9265-d5a5180eb7cd@arm.com> <25d1e09b-53e4-7cd5-87db-b58437e4e690@gentwo.org> <4887267b-dc26-4c33-96ca-8dff054a0d1f@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Aug 04, 2026 at 03:15:03PM +0100, Lorenzo Stoakes (ARM) wrote: > Since this work seems to be very much arm64-focused, perhaps it's therefore > worth looking at an alterative solution that's specific to the arch, like the > one suggested by Mark ([1])? Oh I hadn't realised Mark had already posted the series here: https://lore.kernel.org/all/20260728123859.2911495-1-mark.rutland@arm.com/ > [1]:https://lore.kernel.org/linux-arm-kernel/al_DpFJFcmVhxpvW@J2N7QTR9R3/ -- Cheers, Lorenzo