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 31185C433EF for ; Thu, 5 May 2022 13:20:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236579AbiEENXj (ORCPT ); Thu, 5 May 2022 09:23:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379120AbiEENXf (ORCPT ); Thu, 5 May 2022 09:23:35 -0400 Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1ADD656F94; Thu, 5 May 2022 06:19:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender:Reply-To: 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=1DNfkVatFPseIRLRTaf5GG9N3vrErBYge1wmaOwIZns=; b=LZPrJ/vjUPasOI43ov6ddZJwu/ p0j9nUctyDj+SFAaWk7zI/PPi78KLqVLLq7RTp94cYeImH/Oz48mhUea8dNQwA1mwowWHdOQsW6Eg J9jMvU+x/33EcKgIVyWm0n8bR0BGRO5lxV56aAC+ZiKkzr7QN6HHEuJe/z6LDqeVex0+JBQrvmL32 aVZeBYzmKvwP1cTw04LEGcx5Ku3dP26Y06ygZFvgIBF4N9l3WAyf1CRHjPuNa99Apa0axXvsaCvB2 XF+dUTRht+ESY831J5TV75e00FEes8HLRzqS9eAvvPd25eOysvNknOidWwX4l6Ek+jpeGolt7tcpV USHVIKPg==; Received: from [179.113.53.197] (helo=[192.168.1.60]) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_128_GCM:128) (Exim) id 1nmbOP-0001q2-IE; Thu, 05 May 2022 15:19:41 +0200 Message-ID: <3a52c5ac-e8c3-64dc-d94f-e210ccb19a70@igalia.com> Date: Thu, 5 May 2022 10:19:27 -0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: Should arm64 have a custom crash shutdown handler? Content-Language: en-US To: Mark Rutland Cc: "Michael Kelley (LINUX)" , Marc Zyngier , Catalin Marinas , will Deacon , Vitaly Kuznetsov , Russell King , Ard Biesheuvel , broonie@kernel.org, "linux-arm-kernel@lists.infradead.org" , linux-kernel , "linux-hyperv@vger.kernel.org" References: <427a8277-49f0-4317-d6c3-4a15d7070e55@igalia.com> <874k24igjf.wl-maz@kernel.org> <92645c41-96fd-2755-552f-133675721a24@igalia.com> <3bee47db-f771-b502-82a3-d6fac388aa89@igalia.com> From: "Guilherme G. Piccoli" In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org On 05/05/2022 10:15, Mark Rutland wrote: > [...] > Without a strong justification, we wouldn't add such hooks to arm64. > > Could you start by trying to use the notifiers, and if you encounter a problem, > *then* we consider an alternative? That should mean we have a concrete reason. > > Thanks, > Mark. That's a good idea Mark. I'm not expert in Hyper-V - I could try that for a fact, but let's see if Michael has a strong reason on why this need to be done in arch code and panic notifiers aren't enough. Thanks, Guilherme