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 74E7BC63705 for ; Mon, 2 Jan 2023 17:12:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236710AbjABRMI (ORCPT ); Mon, 2 Jan 2023 12:12:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236633AbjABRLc (ORCPT ); Mon, 2 Jan 2023 12:11:32 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 24A8022F for ; Mon, 2 Jan 2023 09:11:30 -0800 (PST) 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 dfw.source.kernel.org (Postfix) with ESMTPS id A40EE6104F for ; Mon, 2 Jan 2023 17:11:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 15BE3C433D2; Mon, 2 Jan 2023 17:11:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1672679489; bh=07+EHvzGMPhTI3jKP4wAD216rtYg1mS6oVU/MupYWV8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=KBf1cKpR1l3dAZYzbrY/dRpVgoaQV4HWXCtiLpn6B4w2xkfIBtmRAzG+nwws9zadx 1zTV0vyOvqkMOnd81xMgPQs2FZtkFBIgWx5jwQZgPQjsZl2iyx9Z2hypNHjLIwJZuf SQZ33u1IpU1jaqZ0zt7NZ7b/y7zrP6cX5/LLHPYMR/Mz36G1z/e+LoYkZLEo7jI3Zo 5MJZa0DeOW8mvMUan86k2qS98r/CKgSPehIWqDARMNbcal5T7ZjJF7IQsd5sC2eUBM d0El69doIPporsnP45PUFtIAJJj+Ltuc+NP+/Yv/KU/TPzVAsDYgEIt0/fD27xl+Y3 JICPXdj5pUoeg== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1pCOLO-00GMc8-Vf; Mon, 02 Jan 2023 17:11:27 +0000 Date: Mon, 02 Jan 2023 17:11:19 +0000 Message-ID: <86zgb07tfs.wl-maz@kernel.org> From: Marc Zyngier To: Mukesh Ojha Cc: lkml Subject: Re: Query about IPI as NMI (pseudo-NMI) support patches In-Reply-To: <5bed08c5-8663-4e68-27b4-8b6d3957a880@quicinc.com> References: <5bed08c5-8663-4e68-27b4-8b6d3957a880@quicinc.com> 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/28.2 (aarch64-unknown-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: quic_mojha@quicinc.com, linux-kernel@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 Hi Mukesh, On Mon, 02 Jan 2023 16:44:59 +0000, Mukesh Ojha wrote: > > Hi Marc, > > I was looking similar support mentioned in below patch series. > > https://lore.kernel.org/lkml/CAFA6WYO0+LQ=mB1spCstt0cNZ0G+sZu_+Wrv6BKSeXqF5SRq4A@mail.gmail.com/#t > > Wanted to check if there is chance of these patches to land in > mainline ? I certainly have no intention to merge it as is, specially as there is no good usage model for it other than "but think of debug!". We have exactly *one* SGI left. If we are going to lose it over such a feature, I'd want a description of how we are going to share it between potential users, and how we claw some currently used SGIs back. Until then, this is a proof of concept, and not much else. Thanks, M. -- Without deviation from the norm, progress is not possible.