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 BA177CE7AA8 for ; Mon, 25 Sep 2023 17:10:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232473AbjIYRK1 (ORCPT ); Mon, 25 Sep 2023 13:10:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229437AbjIYRKZ (ORCPT ); Mon, 25 Sep 2023 13:10:25 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 77370107 for ; Mon, 25 Sep 2023 10:10:18 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E8A0FC433C8; Mon, 25 Sep 2023 17:10:12 +0000 (UTC) From: Catalin Marinas To: Mark Rutland , Will Deacon , Sumit Garg , Daniel Thompson , Marc Zyngier , Douglas Anderson Cc: linux-arm-kernel@lists.infradead.org, "Rafael J . Wysocki" , Lecopzer Chen , Chen-Yu Tsai , Tomohiro Misono , Peter Zijlstra , Masayoshi Mizuma , Stephane Eranian , Ard Biesheuvel , kgdb-bugreport@lists.sourceforge.net, Stephen Boyd , linux-perf-users@vger.kernel.org, Thomas Gleixner , ito-yuichi@fujitsu.com, gautham.shenoy@amd.com, jpoimboe@kernel.org, keescook@chromium.org, linux-kernel@vger.kernel.org, mingo@kernel.org, philmd@linaro.org, samitolvanen@google.com, scott@os.amperecomputing.com, vschneid@redhat.com Subject: Re: [PATCH v13 0/7] arm64: Add IPI for backtraces / kgdb; try to use NMI for some IPIs Date: Mon, 25 Sep 2023 18:10:10 +0100 Message-Id: <169566180517.219167.12779213618569283316.b4-ty@arm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230906160505.2431857-1-dianders@chromium.org> References: <20230906160505.2431857-1-dianders@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 06 Sep 2023 09:02:55 -0700, Douglas Anderson wrote: > This is an attempt to resurrect Sumit's old patch series [1] that > allowed us to use the arm64 pseudo-NMI to get backtraces of CPUs and > also to round up CPUs in kdb/kgdb. The last post from Sumit that I > could find was v7, so I started my series at v8. I haven't copied all > of his old changelongs here, but you can find them from the link. > > This patch series targets v6.6. Specifically it can't land in v6.5 > since it depends on commit 8d539b84f1e3 ("nmi_backtrace: allow > excluding an arbitrary CPU"). > > [...] Applied to arm64 (for-next/backtrace-ipi), thanks! [1/7] irqchip/gic-v3: Enable support for SGIs to act as NMIs https://git.kernel.org/arm64/c/a02026bf9da1 [2/7] arm64: idle: Tag the arm64 idle functions as __cpuidle https://git.kernel.org/arm64/c/d0c14a7d36f0 [3/7] arm64: smp: Remove dedicated wakeup IPI https://git.kernel.org/arm64/c/2b2d0a7a96ab [4/7] arm64: smp: Add arch support for backtrace using pseudo-NMI https://git.kernel.org/arm64/c/331a1b3a836c [5/7] arm64: smp: IPI_CPU_STOP and IPI_CPU_CRASH_STOP should try for NMI https://git.kernel.org/arm64/c/d7402513c935 [6/7] arm64: kgdb: Implement kgdb_roundup_cpus() to enable pseudo-NMI roundup https://git.kernel.org/arm64/c/2f5cd0c7ffde [7/7] arm64: smp: Mark IPI globals as __ro_after_init https://git.kernel.org/arm64/c/62817d5ba25d -- Catalin