Received: by 2002:a6b:500f:0:0:0:0:0 with SMTP id e15csp518931iob; Wed, 18 May 2022 07:14:05 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyRbF08J55JOA26JpCAO0n8hnH10fqLP4vlARvts0oGO27tk6lyTblSNlcRyjrArZNxZVpb X-Received: by 2002:a17:90b:384d:b0:1dc:a631:e356 with SMTP id nl13-20020a17090b384d00b001dca631e356mr221722pjb.82.1652883245240; Wed, 18 May 2022 07:14:05 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1652883245; cv=none; d=google.com; s=arc-20160816; b=X6F7UFCtf5VRrJLA+jaNo9Tg16IByBlBouZ6NMdNOFQcVwP0tSlvUze7r7hxHOB4Ij +pw0aVx7HpEfqZRkn6O6Yglh0MUjkxl4td8X89OyAEjF4wTx39/XXH/OpsDpnCrIz8o8 PJT4ekdJBFWS8C57mb9cKQk8z8xQQ15zaJ+c6XIGKELqDMehqCMhSX+wZhA2elICYeBQ is/GdTeobf14RV2+qjpZXCI7NhrHKn6cN27e6zJyfp4INpxHFaCOZ151OkKLhSCJztiT p2juwebmtUgyKMXu1KTPTtL1aYW00rimUzg+w/QrTGa0a1pFJPCAb90fXBcHycZY2Lh7 lKKA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=bLeYtCK6G3ymqO+moQ4LY9PCLZcMxZYin7etzLxfMPI=; b=jZZRKiEIwcB76xxwipBIALz+0zjtdqgV1FgC17xyln975jppiA3OB9BVTCKJbSfLcg csFnsuhd7SHYXgJPmJb8wuuPu2BazSgv2M+hcqJ9kR/OLoO8a+2BSDIjSdks5L6M7i53 oohmOVyghpRmncEOWAu4k0jyutmXyfTk+l6CBdWDp+K4EhQft9klnQ3zwygmd7XdowrO kSSRcKjavV+7Y1nOhvYhRQ0+YX4SxDtkql7MZzzlF7bVzaCcBmnp/iU7R7nWSPZzCfZr 4AmoOfxdLzpJgtnkImp8tnYZ+iFyFiImzm6+XWH59sV3s0Rd85IHG+1vMzlTlZTUHvl9 vngg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@zx2c4.com header.s=20210105 header.b=LVqMS3jx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=zx2c4.com Return-Path: Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net. [2620:137:e000::1:18]) by mx.google.com with ESMTPS id m73-20020a633f4c000000b0039e01d84aa8si2696935pga.352.2022.05.18.07.14.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 May 2022 07:14:05 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@zx2c4.com header.s=20210105 header.b=LVqMS3jx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=zx2c4.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 06756177880; Wed, 18 May 2022 07:08:54 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238478AbiEROIs (ORCPT + 99 others); Wed, 18 May 2022 10:08:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238454AbiEROIq (ORCPT ); Wed, 18 May 2022 10:08:46 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C96D11A2C for ; Wed, 18 May 2022 07:08:46 -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 B78FFB820E3 for ; Wed, 18 May 2022 14:08:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4465C385A5; Wed, 18 May 2022 14:08:42 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="LVqMS3jx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1652882920; 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=bLeYtCK6G3ymqO+moQ4LY9PCLZcMxZYin7etzLxfMPI=; b=LVqMS3jxuGZ5bKY4K0Xlh+3CwrNw8ccBTiS7C8sjZZnwYX8w78u6/vjcO9OmWV2qOzqPaa SXCXbcKfwnIi1up1lgbBQJKuQP5KKQMu+7db6lAYKpmGsGoiDxUDGHQw8nqDWd46Letk67 mAfFdDRe/ts0tuW4lPdqAdTIHq/KEPY= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id c1e1eaba (TLSv1.3:AEAD-AES256-GCM-SHA384:256:NO); Wed, 18 May 2022 14:08:40 +0000 (UTC) Date: Wed, 18 May 2022 16:08:32 +0200 From: "Jason A. Donenfeld" To: Thomas Gleixner Cc: LKML , x86@kernel.org, Filipe Manana , Vadim Galitsin Subject: Re: [patch 0/3] x86/fpu: Prevent FPU state corruption Message-ID: References: <20220501192740.203963477@linutronix.de> <87fsl7j8bh.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <87fsl7j8bh.ffs@tglx> X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Thomas, On Wed, May 18, 2022 at 03:09:54PM +0200, Thomas Gleixner wrote: > In the interest of users we should probably bite the bullet and just > disable hard interrupt FPU usage upstream and Cc stable. The stable > kernel updates probably reach users faster. Considering is slated for 5.19, that seems fine, as this will remove what is hopefully the last hardirq FPU user. The bigger motivation, though, for removing the hardirq FPU code would be for just simplifying the FPU handling. The VirtualBox people are going to have to fix this bug anyway, since it also affects old kernels they support. Jason