From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 4786B1BDABE; Tue, 10 Dec 2024 16:37:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733848656; cv=none; b=F5X8qpXP9NQG5W0h9TQ8H3HBjHsUJI5Qu6UVYX8tWS79rqGUDEX8h3ZAwyCSJXiBuzBBw6KzcUH439I3lbg1A0664UrPkQ2kpPLvp/SGfqLFIdVUO4KD56r/9jbnSOFX/4BY73ikl5yPVnG2ZBictuApw8ys38zKC3kIM1Wllq8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733848656; c=relaxed/simple; bh=MpjaKk7cYVbdE3GJCoyN8FReQ8QSVbfdgLJdLgGBhWA=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=PNy6VhbrK3O6TfqAIZGrKLq42ymr6/jpMn3YpxMH36jmv87AKC8Mym2kAaERlROjL1+Ux67n0+6LhTE/RWl8XMN8CBWQNci+NjUKNQbXjKy9AIN7Zd29I7J9t6DXiqchraOYgaPlhdKa/5wWDXlob81s8R0icHs5XD8Nc5YCyHY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gz1d8Juz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gz1d8Juz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F18AC4CED6; Tue, 10 Dec 2024 16:37:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733848655; bh=MpjaKk7cYVbdE3GJCoyN8FReQ8QSVbfdgLJdLgGBhWA=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=gz1d8JuziAphylEjEF7B7BQqTxIYY7Trtru/YIrM8k+ROuMaOX9yTpGIpfzm5Ygf+ lTFi9KBrJm+wXylFvc4LHyoqpMg6K7xvKeqBYU0/gvYHv5Y1eoyPWo9vaEkiYEQTKE sGPu/EkDINd6D3AWM4sOQhl+tD3cR2PgEMa9quhT+iSna+kcIUzSQaSswqraLsEVpJ TCCexVKL7jTc7lX+y4bTYCGGyfRd255RAntolZK3GCzV/F78jZKSgv87LmW2P96m28 dQ4VVniFe2e3zUKidWjthS19Vm8bsYKkoadKvFgKRRz56o8XGqJjatmOtmO2iiOycq HR6bJJ1Gr3e+A== Date: Tue, 10 Dec 2024 10:37:34 -0600 From: Bjorn Helgaas To: "Luck, Tony" Cc: "Meyer, Kyle" , "Zhuo, Qiuxu" , "bp@alien8.de" , "james.morse@arm.com" , "mchehab@kernel.org" , "rric@kernel.org" , "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] EDAC/{i10nm,skx,skx_common}: Support multiple clumps Message-ID: <20241210163734.GA3244835@bhelgaas> Precedence: bulk X-Mailing-List: linux-edac@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 Fri, Dec 06, 2024 at 10:09:23PM +0000, Luck, Tony wrote: > What we need here is a function that maps from a PCIe device to a CPU socket. > > Has this problem been encountered before? Is there an existing solution? There's nothing in PCI itself that connects a device to a CPU. It sounds like something that might fit with an ACPI NUMA description, e.g., if a CPU and a PCI host bridge had the same ACPI _PXM value, you could conclude that the devices below the host bridge are close to the CPU. Bjorn