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[23.128.96.35]) by mx.google.com with ESMTPS id f10-20020a65550a000000b0057744d09d2fsi18144802pgr.18.2023.09.28.05.21.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Sep 2023 05:21:35 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) client-ip=23.128.96.35; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=EctqP9dC; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e header.b=8NoTJO5O; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by groat.vger.email (Postfix) with ESMTP id 9B3B480BB513; Thu, 28 Sep 2023 02:33:48 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at groat.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231705AbjI1JdM (ORCPT + 99 others); Thu, 28 Sep 2023 05:33:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231686AbjI1JdK (ORCPT ); Thu, 28 Sep 2023 05:33:10 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2471F193 for ; Thu, 28 Sep 2023 02:33:09 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1695893587; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=wd8aJJ+FVS2AFo91cxTfRED5C3m/5EgOiSBFs0laTDg=; b=EctqP9dCH2FukRed5W57aJs4FAaULC5DWw8BssNOTqPoOuP75otWkT6e/4S66YzFqaotbi eFGMwk/iEVmk68VV2U+rHDHajQ8LrokV6dWuG0Crs9RIOFo0CAI/JKNljJFXyBQU1zBEmY zQ1sIJf1cMFIC71FY1CaHV69ZMvxZ3ITDsCqNgVqS89ahFZnpbWDuBzonLRfKsZlh6zQWT 8PbzG4vysIEDFKVNi6oUjkr7PRjeqoNFSMi7Ev8PwesRM0N0/wHgUwf1RemopIUlfdrKLA hwp7S7wNpRYcZkbvJqheFbsMyRSEugk7+ekhexj23ibT0hfI31mFdiSzsh3OQw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1695893587; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=wd8aJJ+FVS2AFo91cxTfRED5C3m/5EgOiSBFs0laTDg=; b=8NoTJO5OW8iDSHv4+miGa3YQtsLMGx4tetVHix61HXTiL+KusDwibcoOfVe5Qa7rBmvXLs NitgwLSTZA5sQXAw== To: Borislav Petkov Cc: LKML , x86@kernel.org, "Chang S. Bae" , Arjan van de Ven , Nikolay Borisov Subject: Re: [patch V3 25/30] x86/microcode: Rendezvous and load in NMI In-Reply-To: <20230927171713.GBZRRjmUDQrV9HVxv-@fat_crate.local> References: <20230912065249.695681286@linutronix.de> <20230912065502.327149876@linutronix.de> <20230927171713.GBZRRjmUDQrV9HVxv-@fat_crate.local> Date: Thu, 28 Sep 2023 11:33:07 +0200 Message-ID: <878r8qfxrg.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (groat.vger.email [0.0.0.0]); Thu, 28 Sep 2023 02:33:48 -0700 (PDT) On Wed, Sep 27 2023 at 19:17, Borislav Petkov wrote: > On Tue, Sep 12, 2023 at 09:58:23AM +0200, Thomas Gleixner wrote: >> >> - /* No point to wait here. The CPUs will all wait in stop_machine(). */ >> + touch_nmi_watchdog(); > > AFAICT, you're touching the NMI watchdog even in the !use_nmi case. Yes, we need that also for the non-NMI case because this runs in stop-machine.