From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="vw1L6XLY" Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13AC68E; Tue, 12 Dec 2023 11:58:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=tzSIob+ZloljYLW+tLDyKC/69ft7pcQwsMOiIXpJIok=; b=vw1L6XLYMrjE3sFENIwANCt1v3 7cAzma3wPHfPcHoG9wwkMxGWUzWDApvWXx2iDNH1wm+zJnUto1Pm0srAC0ESTdJFqRhA5HgZkecv8 6ZxXy2SdOV32NspEw3waqQJesyFiNyElMKU1mfQ7hGyutNpt8Eu8Cl0dTo9npe2YUMHIcFLtUzR2U r0CtlsCPasqY8qOEIs+t339Sv6zjT1PVHzSLP70GRefywlApYbHkmdsoRLcx9nXuUlWRQTuyIkVQH vfIu2gbTC4MCO7Zmq8ZOWgZZVe6GhwFIl7d/pw5GgsMAFTOUidPZyLz8lj/YwebHDzhG7lGYuwBiP 2nXhXZXA==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:33796) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rD8u0-0007MS-0Z; Tue, 12 Dec 2023 19:58:48 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1rD8ty-0000ih-JG; Tue, 12 Dec 2023 19:58:46 +0000 Date: Tue, 12 Dec 2023 19:58:46 +0000 From: "Russell King (Oracle)" To: "Rafael J. Wysocki" Cc: linux-pm@vger.kernel.org, loongarch@lists.linux.dev, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, kvmarm@lists.linux.dev, x86@kernel.org, acpica-devel@lists.linuxfoundation.org, linux-csky@vger.kernel.org, linux-doc@vger.kernel.org, linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, Salil Mehta , Jean-Philippe Brucker , jianyong.wu@arm.com, justin.he@arm.com, James Morse Subject: Re: [RFC PATCH v3 00/39] ACPI/arm64: add support for virtual cpuhotplug Message-ID: References: Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Sender: Russell King (Oracle) On Mon, Dec 04, 2023 at 06:23:02PM +0000, Russell King (Oracle) wrote: > On Tue, Oct 24, 2023 at 08:26:58PM +0200, Rafael J. Wysocki wrote: > > On Tue, Oct 24, 2023 at 5:15 PM Russell King (Oracle) > > wrote: > > > > > > Hi, > > > > > > I'm posting James' patch set updated with most of the review comments > > > from his RFC v2 series back in September. Individual patches have a > > > changelog attached at the bottom of the commit message. Those which > > > I have finished updating have my S-o-b on them, those which still have > > > outstanding review comments from RFC v2 do not. In some of these cases > > > I've asked questions and am waiting for responses. > > > > > > I'm posting this as RFC v3 because there's still some unaddressed > > > comments and it's clearly not ready for merging. Even if it was ready > > > to be merged, it is too late in this development cycle to be taking > > > this change in, so there would be little point posting it non-RFC. > > > Also James stated that he's waiting for confirmation from the > > > Kubernetes/Kata folk - I have no idea what the status is there. > > > > > > I will be sending each patch individually to a wider audience > > > appropriate for that patch - apologies to those missing out on this > > > cover message. I have added more mailing lists to the series with the > > > exception of the acpica list in a hope of this cover message also > > > reaching those folk. > > > > > > The changes that aren't included are: > > > > > > 1. Updates for my patch that was merged via Thomas (thanks!): > > > c4dd854f740c cpu-hotplug: Provide prototypes for arch CPU registration > > > rather than having this change spread through James' patches. > > > > > > 2. New patch - simplification of PA-RISC's smp_prepare_boot_cpu() > > > > > > 3. Moved "ACPI: Use the acpi_device_is_present() helper in more places" > > > and "ACPI: Rename acpi_scan_device_not_present() to be about > > > enumeration" to the beginning of the series - these two patches are > > > already queued up for merging into 6.7. > > > > > > 4. Moved "arm64, irqchip/gic-v3, ACPI: Move MADT GICC enabled check into > > > a helper" to the beginning of the series, which has been submitted, > > > but as yet the fate of that posting isn't known. > > > > > > The first four patches in this series are provided for completness only. > > > > > > There is an additional patch in James' git tree that isn't in the set > > > of patches that James posted: "ACPI: processor: Only call > > > arch_unregister_cpu() if HOTPLUG_CPU is selected" which looks to me to > > > be a workaround for arch_unregister_cpu() being under the ifdef. I've > > > commented on this on the RFC v2 posting making a suggestion, but as yet > > > haven't had any response. > > > > > > I've included almost all of James' original covering body below the > > > diffstat. > > > > > > The reason that I'm doing this is to help move this code forward so > > > hopefully it can be merged - which is why I have been keen to dig out > > > from James' patches anything that can be merged and submit it > > > separately, since this is a feature for which some users have a > > > definite need for. > > > > I've gone through the series and there is at least one thing in it > > that concerns me a lot and some others that at least appear to be > > really questionable. > > > > I need more time to send comments which I'm not going to do before the > > 6.7 merge window (sorry), but from what I can say right now, this is > > not looking good. > > Hi Rafael, > > Will you be able to send your comments, so that we can find out what > your other concerns are please? I'm getting questions from interested > parties who want to know what your concerns are. > > Nothing much has changed to the ACPI changes, so I think it's still > valid to have the comments back for this. Hi Rafael, Another gentle prod on this... -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!