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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7020EC433F5 for ; Sun, 29 May 2022 13:21:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230224AbiE2NVs (ORCPT ); Sun, 29 May 2022 09:21:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229719AbiE2NVm (ORCPT ); Sun, 29 May 2022 09:21:42 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 420D240E50; Sun, 29 May 2022 06:21:39 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id EAED9B80B12; Sun, 29 May 2022 13:21:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 86A05C385A9; Sun, 29 May 2022 13:21:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653830496; bh=dxfYme49t+GbMgcSO3QeI/AUvVznk4CbVEjgcs5IqeA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=ZtvYyGuKggkHRZd4Tuz79URyRouxrmYBBua0Sj4ctMAqerLnnHdoIaKrqigBEKqhu yo3F+UafQ2xlqmoX2615EZF0FRYj3B2o5NwUr1GawytpkyyWYDE7pUJz8KZRtu1qdp U7KEHKxx1mS68I/tPRFz70tePN3o5ED45GDZToadAUpFfGr44ti5zkbo0WQqh00rjW rW7vf+lITgBan3cYOyV6Bd8y6Mb6BgQCpL6lDnWqhEkGW5QmPz9wKElyAYDL2ZQXHD QVYnZt9Zd+Km7TGL4g5B6FX+b32Az4r2s9HDs9IUAU+vrpn5tSmN54cgW84fmKua8E Ixxu1y7kvkm0A== Received: from sofa.misterjones.org ([185.219.108.64] helo=wait-a-minute.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nvIrO-00ELlF-6O; Sun, 29 May 2022 14:21:34 +0100 Date: Sun, 29 May 2022 14:21:33 +0100 Message-ID: <875ylomq3m.wl-maz@kernel.org> From: Marc Zyngier To: Arnd Bergmann Cc: Linus Torvalds , linux-arch , Linux Kernel Mailing List , Yoshinori Sato , Palmer Dabbelt , Masahiro Yamada , Peter Zijlstra , Huacai Chen , WANG Xuerui , libc-alpha@sourceware.org, musl@lists.openwall.com, ardb@kernel.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org Subject: Re: [GIT PULL] asm-generic changes for 5.19 In-Reply-To: References: User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: arnd@kernel.org, torvalds@linux-foundation.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, ysato@users.sourceforge.jp, palmer@dabbelt.com, masahiroy@kernel.org, peterz@infradead.org, chenhuacai@loongson.cn, kernel@xen0n.name, libc-alpha@sourceware.org, musl@lists.openwall.com, ardb@kernel.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 29 May 2022 12:24:29 +0100, Arnd Bergmann wrote: > > On Thu, May 26, 2022 at 5:00 PM Arnd Bergmann wrote: > > - A series to add a generic ticket spinlock that can be shared by most > > architectures with a working cmpxchg or ll/sc type atomic, including > > the conversion of riscv, csky and openrisc. This series is also a > > prerequisite for the loongarch64 architecture port that will come as > > a separate pull request. > > An update on Loongarch: I was originally planning to send Linus a > pull request with > the branch with the contents from > > https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git/log/?h=loongarch-next > > but I saw that this includes both the architecture code and some > device drivers (irqchip, pci, acpi) that are essential for the > kernel to actually boot. At least the irqchip driver has not passed > review because it uses a nonstandard way to integrate into ACPI, and > the PCI stuff may or may not be ready but has no Reviewed-by or > Acked-by tags from the maintainers. I clearly don't want to bypass > the subsystem maintainers on those drivers by sending a pull request > for the current branch. It seems that there is now a new contributor on the irqchip front, and the current approach *should* be better than the "copy MIPS and run" approach that was previously taken. I'm still to find time to review the new series (I just came back from a week off), but hopefully next week. > My feeling is that there is also no point in merging a port without > the drivers as it cannot work on any hardware. On the other hand, > the libc submissions (glibc and musl) are currently blocked while > they are waiting for the kernel port to get merged. I'd tend to agree. But if on the other hand the userspace ABI is clearly defined, I think it could make sense to go for it (if I remember well, we merged arm64 without any support irqchip support, and the arm64 GIC support appeared later in the game). Thanks, M. -- Without deviation from the norm, progress is not possible.