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 8B5931E51D for ; Thu, 31 Jul 2025 04:58:45 +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=1753937927; cv=none; b=YQt7We+zIm81wkcsCY71YUhM/2DoKp9TPFvy3VCvCMuhukN6KPl+20zRwXQvXsb+DI8ZYiQplQHv4ARY3RTkezT5wRaoxzOqcPrdlvaBrAYIN70cqQWYMbFNEFFgaPnW2+4FOPjBpCwjVf604tK18Ht0XY5eKh675vPDTghGzdQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753937927; c=relaxed/simple; bh=r3T/5Kd5fbFZoK4QysxNkvRGaWz6p0BQm7QV/F2hHUE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CBIHpLnXdrbfyh1LppL3+DDWfI/A9I/MOxX9TumTK8M8wDzv4zPjI8oapjV5qYcqvctmwBoj8qeUPRshnmzmZTPGjYie0LJ+bYjcvFE2LuKFTa5AbF0uaG6zCzDCzd2W77hfM6JHcsnwUdO3VSDybh0eVdzCgByxTBgOgV95bao= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Vb/1BM7l; 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="Vb/1BM7l" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7AD54C4CEEF; Thu, 31 Jul 2025 04:58:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1753937924; bh=r3T/5Kd5fbFZoK4QysxNkvRGaWz6p0BQm7QV/F2hHUE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Vb/1BM7lRyi9yAz3qsR9dPpmS6T2JBKO+bFH1KyADiM9nOTXA9RNvGPIl5WuR+N5U sIaHPExPs0PgXNlXHZKNEyKB49KzNj3WcyO/D0RSfkefl/vBNtoibcAYSLeiEdSqg7 mWe5DnKPCwijC5q28UCBc5sWSVN5Wbu9F3cRKIR8= Date: Thu, 31 Jul 2025 06:58:41 +0200 From: Greg KH To: Lorenzo Stoakes Cc: Isaac Manjarres , aliceryhl@google.com, surenb@google.com, stable@vger.kernel.org, kernel-team@android.com Subject: Re: [PATCH 5.10.y 0/4] Backport series: "permit write-sealed memfd read-only shared mappings" Message-ID: <2025073103-unheated-outbid-11a2@gregkh> References: <20250730015406.32569-1-isaacmanjarres@google.com> <538efa9f-d3e5-41ab-ac82-5b7b799df706@lucifer.local> 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: <538efa9f-d3e5-41ab-ac82-5b7b799df706@lucifer.local> On Thu, Jul 31, 2025 at 05:40:29AM +0100, Lorenzo Stoakes wrote: > On Wed, Jul 30, 2025 at 03:26:01PM -0700, Isaac Manjarres wrote: > > On Wed, Jul 30, 2025 at 08:34:02PM +0100, Lorenzo Stoakes wrote: > > > > > > > > > > Having said that, I'm not against you doing this, just wondering about > > > > > that. > > > > > > > > > > Also - what kind of testing have you do on these series? > > > > I did the following tests: > > > > > > > > 1. I have a unit test that tries to map write-sealed memfds as > > > > read-only and shared. I verified that this works for each kernel version > > > > that this series is being applied to. > > > > > > > > 2. Android devices do use memfds as well, so I did try these patches out > > > > on a device running each kernel version, and tried boot testing, using > > > > several apps/games. I was looking for functional failures in these > > > > scenarios but didn't encounter any. > > > > > > > > Do you have any other recommendations of what I should test? > > > > > > No, that sounds good to me! Thank you for taking the time to implement and > > > carefully check this :) > > > > > > In this case I have no objections to these backports! > > > > > > Cheers, Lorenzo > > > > Thanks Lorenzo! Just to confirm, is there anything required from my > > end for these patches or they'll get reviewed and merged over time? > > No, these should all be good to go, Greg + Sasha handle the stable kernels > and should percolate through their process (I see Sasha's scripts have been > firing off already :) Yeah, give us a week or so to catch up with all of the recently submitted changes, the merge window, AND finally, a vacation for the stable maintainers.... thanks, greg k-h