From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4174913664F for ; Tue, 27 Feb 2024 09:10:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709025028; cv=none; b=hIYlRBt0TXGumM8b/DsYc0zY4L8fhboxnuD3aB8FE3OaDYTmh+2CfGSlJik4dvYFU73XK9+YjnFVFhHO4LON4ILivzEZr196slXfApiGO8ZDzlUWBNXyrfBtka76c0ZmtTNIykSYyJXeX42UeltC+Njd59VXJbg9ElPz0J4f6Cg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709025028; c=relaxed/simple; bh=hC/gubxCw+Qg9ZRBkFswyYcpY8zcUjNchpx21rRhRyA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=T3giNgKPYTf8NOb55HWF/25OBkdldnw++s+2eiuH73cB7yw6+yQ8PCYoXi/1IW0TEVOXZoEBo/9iS+JoqYUS4xiYt40VTsxYmJu9iPgOxrZlAnvXbcKv2CU3pHXDAwIYm/A4QTO5sjWShzPFBX0xi5lEjh2B7PgwGz/cj9NNgfg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=m7WHZpb3; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="m7WHZpb3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 93995C433C7; Tue, 27 Feb 2024 09:10:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1709025027; bh=hC/gubxCw+Qg9ZRBkFswyYcpY8zcUjNchpx21rRhRyA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=m7WHZpb3SUYi7FCpNksRWlI3DEc9AQLIUNYwbQJocVw+PCNZI4PvMD2sHMoACjEn6 /GL7EERy36CIVeizDbQ/HsrWDUW4UNVrvO65tuAU306U+9K/mw8+7q4BtSd2u1cjIu gdTmofeDMqEMigjY/2Pn1sDExlWioBQ0xvtW7JFc= Date: Tue, 27 Feb 2024 10:10:25 +0100 From: Greg KH To: Pawan Gupta Cc: stable@vger.kernel.org, Dave Hansen , Alyssa Milburn , Andrew Cooper , Peter Zijlstra , Dave Hansen , Sean Christopherson , Nikolay Borisov Subject: Re: [PATCH 6.6.y 0/6] Delay VERW - 6.6.y backport Message-ID: <2024022743-employee-untimed-af9c@gregkh> References: <20240226-delay-verw-backport-6-6-y-v1-0-aa17b2922725@linux.intel.com> <2024022740-smugness-cone-e80c@gregkh> <20240227090500.hfuo546w4cuio762@desk> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240227090500.hfuo546w4cuio762@desk> On Tue, Feb 27, 2024 at 01:05:00AM -0800, Pawan Gupta wrote: > On Tue, Feb 27, 2024 at 09:54:00AM +0100, Greg KH wrote: > > On Mon, Feb 26, 2024 at 09:34:14PM -0800, Pawan Gupta wrote: > > > This is the backport of recently upstreamed series that moves VERW > > > execution to a later point in exit-to-user path. This is needed because > > > in some cases it may be possible for data accessed after VERW executions > > > may end into MDS affected CPU buffers. Moving VERW closer to ring > > > transition reduces the attack surface. > > > > > > Patch 1/6 includes a minor fix that is queued for upstream: > > > https://lore.kernel.org/lkml/170899674562.398.6398007479766564897.tip-bot2@tip-bot2/ > > > > Obviously I can't take this, you know that :( > > > > Please include the actual commit in the series, when it hits Linus's > > tree. > > Backports to 6.6 and 6.7 will work without the commit waiting to be > upstreamed. Ok, that too is not obvious as you included it here :( Please be more careful. Take a day and do some testing and then resend when ready. thanks, greg k-h