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 D937643ABC for ; Wed, 18 Jun 2025 10:17:19 +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=1750241840; cv=none; b=TkKIuAKUQvoPwVHsr7jG0vapuDzAyyle/xgzVG/Fj5cwR2Fi6E5OEwEbtjpagKIx40YNCu4LDkODpvtXRdUj7P8dl+8Dg3ku8GF5fW5d24cX13a8tDcUl4teOEEeoFoZ5q16Wq+YL9wd07kYg4YVMTlwvODsCDIE55CeXY/Yr0E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750241840; c=relaxed/simple; bh=Iu7+hNKCCdjztLeX2eFEdJH31jIEHBTI0oNl1UH89RM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QpeJwX1uHdtZ+p3rRkPXVKQcoIFEJp28JYDCsuVBsG9ysCpsNLAcBCrmzNO/jI25bspYc1DqzcUPo5m3pb4wWAPBzlt1LeH+Trul15M5BxakOTIwqzLP3zuqPuxfRY8AsgKBrxjlJTbAAG3RLJQFf1ra6xP04Lvv8dCilFPxclg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PFvhWztn; 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="PFvhWztn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57D4CC4CEE7; Wed, 18 Jun 2025 10:17:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750241839; bh=Iu7+hNKCCdjztLeX2eFEdJH31jIEHBTI0oNl1UH89RM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=PFvhWztncz7lytujppxlwwpUcpRZYxQdisgd43U3Eln7DMTD8Ltn9YLjwgehd14Ky H8Z8b4Aub3b2BFkn/DasBCUPPxXS4KiZUwF0KcYkvoBxipF8QU0ABk9bvh0q4EarRm wDBwXso7qP8uxH0x9REjDEkQwNYW8FNkGRPONDS38RdTvTUZEUYblbPKumWc+jpn0o dYNDKF2vOfRBFVzUEY645WpaK7qabyLejDmjYqR7+NJG0jR/IDpXsLSvb/zLJEa/4+ 9lsAIMeIDwnf2bd94DSty6QqaUUxLqCDrGEJLnwRQK+IjTQ+c/mSSnCGnLemWYk8WV n1iJA3I/rMa2A== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1uRpr3-000000006Pc-37D3; Wed, 18 Jun 2025 12:17:18 +0200 Date: Wed, 18 Jun 2025 12:17:17 +0200 From: Johan Hovold To: Brian Norris Cc: Aleksandrs Vinarskis , Thomas Gleixner , Tsai Sung-Fu , Douglas Anderson , linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/2] genirq: Retain depth for managed IRQs across CPU hotplug Message-ID: References: <20250514201353.3481400-1-briannorris@chromium.org> <20250514201353.3481400-2-briannorris@chromium.org> <24ec4adc-7c80-49e9-93ee-19908a97ab84@gmail.com> 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 Thu, Jun 12, 2025 at 11:40:38AM -0700, Brian Norris wrote: > On Wed, Jun 11, 2025 at 12:08:16PM -0700, Brian Norris wrote: > > On Wed, Jun 11, 2025 at 08:56:40AM +0200, Aleksandrs Vinarskis wrote: > > > Yes. Dell XPS 9345 is arch/arm64/boot/dts/qcom/x1e80100.dtsi based, > > > and Asus Zenbook A14 is arch/arm64/boot/dts/qcom/x1p42100.dtsi based, > > > which is a derivative but has a slightly different PCIe setup. So far > > > both laptops would behave in the same ways. > > > > Thanks. So that's what I suspected, a DWC/pcie-qcom PCIe driver, and > > seemingly standard NVMe on top. pcie-qcom doesn't seem to do anything > > weird regarding MSIs or affinity, [...] > > For the record, I was reminded that DWC/pcie-qcom does not, in fact, > support irq_chip::irq_set_affinity(), which could perhaps be a unique > factor in his systems' behavior. No, we use the GIC ITS for the NVMe interrupts on X1E so that should not be involved here. Johan