From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [78.32.30.218]) (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 AEB8C153BD0; Mon, 29 Jan 2024 15:32:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=78.32.30.218 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706542378; cv=none; b=NK1Tcp3fhkgMaeXNCjfsGH3iY8DlgWE2MWt2oYCWfI/C+wG64cB2NomrcF3IA87QAY24ZBdckD5C0fP+COgf0Mja6ivQ+rmKluXKPRDo5s2Sg00JiJpkN3eR4pfzkmIwbc79C6wWfxZ6EHm/9//hYDMQNQwivtBM9eD3QBxwZP4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706542378; c=relaxed/simple; bh=M4Ydsjad/swrZwcvf7pSn8N8hCrpUpA9lm6//wf5n4Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=r5ERMqVEikUpyZL6hgr6rCDXAbXNWS2OHp7Fn9HRa207YqS+G/x4EHAJRKdrTHA+bUKLexEkX6mAHewAwY9j3f0gClThOVN8uhpQxyHGS6qimaygecm0OD7tapyb5igBriLPNhhS3/PiM/Q/885Uy3DSdtfMZAVeJUDLsKzwZLI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk; spf=none smtp.mailfrom=armlinux.org.uk; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b=QPBMraaO; arc=none smtp.client-ip=78.32.30.218 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="QPBMraaO" 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-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-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=CrHCTlFRqhVi35tK959UuBbKAaE+0blDjjqiPB7oOOk=; b=QPBMraaOzb39X/fTDTDp8vZn3U RyQNYMvVEuosY1G2SF9dOmBcU/EIjaw/4q1ZtewTtTqBR2ZTFc0HwNzLEMLV2PL1R+6KEJM2hgN8y y27brvTJVMBs3/Kx16Qyd0F6UgR6nO91iHksI1MULxx1Uv/MoCL4CJVPMswAs3vMX+z1pVQoWF9mP ciarx1HSr1oQZTuCJWBn/mylPek1/6qnmqyWafXtUnzD171hxxU3T2/IBjNv4sD9GCQi2Sz5aNUJ2 NpFd5Kwem/2q2pdUrG702/gdn6SHY1d9fOFivlToOyVuVDMwEArwj3mFhJINI1ddPyf7tn0gTM/tU xrrJkCOA==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:40068) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rUTcv-0000bZ-0j; Mon, 29 Jan 2024 15:32:49 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1rUTcp-0004f6-8p; Mon, 29 Jan 2024 15:32:43 +0000 Date: Mon, 29 Jan 2024 15:32:43 +0000 From: "Russell King (Oracle)" To: Jonathan Cameron Cc: "Rafael J. Wysocki" , 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 , vishnu@os.amperecomputing.com, miguel.luis@oracle.com Subject: Re: [PATCH RFC v3 03/21] ACPI: processor: Register CPUs that are online, but not described in the DSDT Message-ID: References: <20240122160227.00002d83@Huawei.com> <20240123092725.00004382@Huawei.com> <20240129130354.0000042b@Huawei.com> Precedence: bulk X-Mailing-List: linux-ia64@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: <20240129130354.0000042b@Huawei.com> Sender: Russell King (Oracle) On Mon, Jan 29, 2024 at 01:03:54PM +0000, Jonathan Cameron wrote: > I poked this on x86 - it only applies with hotplug enabled anyway so > same result as doing the hotplug later - All possible Processor() entries > already exist in DSDT. Hence this isn't the source of the mysterious > broken configuration. > > If anyone does poke this path, the old discussion between James > and Salil provides some instructions (mostly the thread is about > another issue). > https://op-lists.linaro.org/archives/list/linaro-open-discussions@op-lists.linaro.org/thread/DNAGB2FB5ALVLV2BYWYOCLKGNF77PNXS/ > > Also on x86 a test involving smp 2,max-cpus=4 and adding cpu-id 3 > (so skipping 2) doesn't boot. (this is without Salil's QEMU patches). > I guess there are some well known rules in there that I don't know about > and QEMU isn't preventing people shooting themselves in the foot. > > As I'm concerned, drop this patch. > If there are platforms out there doing this wrong they'll surface once > we get this into more test farms (so linux-next). If we need this > 'fix' we can apply it when we have a problem firmware to point at. Now dropped. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!