From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DB641CDB479 for ; Thu, 25 Jun 2026 02:27:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:CC:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=T0BfrzIU2ix5DJskEM1Wh3op9TvYE7OUzHykA1a7KTg=; b=zXL+htLEqtg3iZC/EGdAaZ3ZKX uVVirjQNa0InAWsVOc0WJOCyNwraT//9J+nribNxQD7wUGyobLQbBBvq/k/Ev+fG+w7h/B+sA9JE/ 1cjOfaJlec3e14Irv9aafDLnJQbIpR5JYrb31xh2+SlLeMKjbquklfDrunbhssiI1w9A+ttP+qd59 /N2a2D2q4Gh6ixUMtSx+ZEZp91rvK29Lb7Z+0QDryYl8slEEQvjTMhT+BHqk/WMM9eGxvB/Il+uCm O3IsUzY/OWBADc1tzT6fBjhVWKfStl6lHisMkI+fdB8aNHzmSlyqd3PmU8dTRBpZd7H6gZc2GhoXe jlARBSjg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wcYzX-00000008W1L-0asF; Thu, 25 Jun 2026 01:34:55 +0000 Received: from canpmsgout11.his.huawei.com ([113.46.200.226]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wcYzS-00000008W06-3ar0 for linux-arm-kernel@lists.infradead.org; Thu, 25 Jun 2026 01:34:53 +0000 dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=T0BfrzIU2ix5DJskEM1Wh3op9TvYE7OUzHykA1a7KTg=; b=rzPGgwZRFxo1+KyN5i209/XJHzqxOl/KLFCLb88pubrzMXDJ1QXV6/T7MRXTPkry2iotj4wKz TR/J/r7udCZozzyPhn4OiRq3p0d+icD//XhGqHC9K+vqdT8PMw8EgILkOKp25kBBRoq9/C2/1FJ hoxwASCD474cVEY8GPetQ4g= Received: from mail.maildlp.com (unknown [172.19.162.92]) by canpmsgout11.his.huawei.com (SkyGuard) with ESMTPS id 4gm1Mc0NgGzKm6J; Thu, 25 Jun 2026 09:25:32 +0800 (CST) Received: from dggpemf500011.china.huawei.com (unknown [7.185.36.131]) by mail.maildlp.com (Postfix) with ESMTPS id 4EF6240562; Thu, 25 Jun 2026 09:34:40 +0800 (CST) Received: from [10.67.109.254] (10.67.109.254) by dggpemf500011.china.huawei.com (7.185.36.131) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 25 Jun 2026 09:34:37 +0800 Message-ID: <32d41a67-cf37-4079-8218-bed2b73bbf14@huawei.com> Date: Thu, 25 Jun 2026 09:34:36 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 00/12] arm64: Add HOTPLUG_PARALLEL support for secondary CPUs To: Will Deacon CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , References: <20260624092537.2916971-1-ruanjinjie@huawei.com> From: Jinjie Ruan In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.67.109.254] X-ClientProxiedBy: kwepems500001.china.huawei.com (7.221.188.70) To dggpemf500011.china.huawei.com (7.185.36.131) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260624_183451_507051_0960F6AA X-CRM114-Status: GOOD ( 19.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 6/24/2026 8:16 PM, Will Deacon wrote: > On Wed, Jun 24, 2026 at 05:25:25PM +0800, Jinjie Ruan wrote: >> Support for parallel secondary CPU bringup is already utilized by x86, >> MIPS, and RISC-V. This patch brings this capability to the arm64 >> architecture. >> >> Introduce CONFIG_HOTPLUG_PARALLEL_SMT to avoid primary SMT threads >> to boot first constraint. >> >> And add a 'cpu' parameter to update_cpu_boot_status() to allow updating >> the boot status at a per-CPU granularity during parallel bringup. >> >> Rework the global `secondary_data` and `__early_cpu_boot_status` accessed >> during early boot into per-CPU arrays to allow secondary CPUs to boot >> in parallel. >> >> And reuse `__cpu_logical_map` array in the early boot code in head.S >> to resolve each secondary CPU's logical ID concurrently. >> >> This series includes a subset of the refactoring patches proposed >> by Will Deacon, with further adjustments. > > Sheesh, Jinjie, what are you doing? > > I said yesterday that I would dust off the old series after the merge > window: > > https://lore.kernel.org/all/ajqYaklhIyvaNLlk@willie-the-truck/ > > "Please just give me a week or so to rebase my changes and send them out > for discussion" > > but instead, you've posted patches from me that are missing a bunch of > fixes that need to be folded back in: > > https://web.git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/commit/?h=cpu-hotplug&id=2d5b8df5d4e2bbc142e3b4f21cabbca96e3da79d > Hi Will, I am terribly sorry for my impatience and the confusion this has caused. I completely misread the situation and shouldn't have posted those incomplete patches, especially when you explicitly asked for a week to rebase them properly. > so now you're asking people to review incomplete patches from somebody > else. > > Please just give me the time I asked for. If you want to help out in the > meantime, there are plenty of patches that need reviewing... It was a mistake on my part, and I sincerely apologize for wasting community review resources and disrupting your schedule. I will absolutely back off now and wait for your official series. Lesson learned. Thanks for your patience and for calling me out on this. Best regards, Jinjie > > Will >