From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.mainlining.org (mail.mainlining.org [5.75.144.95]) (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 44E3557980C for ; Wed, 9 Sep 2026 14:45:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=5.75.144.95 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788965125; cv=none; b=C8bv84IX7E9GfX4D/XIJWOsLFa78ab+8XdMOaR42Qbv1LoUAqkViHbcsgtFHxLnJ0qSa9hjyVwFhGGj7jIgA1wyT97aXBDjyVkUMqKj5uefZHSXymkkU1vVeq0HnLPS99dqynKNSZRzvfKwdsf5a2hM4zyATbL0+IZ0jg+ddkvc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788965125; c=relaxed/simple; bh=qgX3F3/chBJajEYG6ONnqTkx0UeYX0YlLIoI1meGgyw=; h=Date:From:To:CC:Subject:In-Reply-To:References:Message-ID: MIME-Version:Content-Type; b=W4swOIAoqbs8ygw0FUz2bFXHDCf7kpPnN40sMkuo+eIo//vlK2DvoZZ9qSgnUz8WbqXyPhhHyZthLFvtfgdGBubwSKZ1lPo8aqewrT+0hC1iw5+LRaEpuUcY+V6z5e5vTowft3xWlLaXQuRUjPEvyhvtWrKkWlKKuIUEel4J2ks= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mainlining.org; spf=pass smtp.mailfrom=mainlining.org; dkim=pass (2048-bit key) header.d=mainlining.org header.i=@mainlining.org header.b=rwXItU7p; dkim=permerror (0-bit key) header.d=mainlining.org header.i=@mainlining.org header.b=eQ332XR5; arc=none smtp.client-ip=5.75.144.95 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mainlining.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mainlining.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mainlining.org header.i=@mainlining.org header.b="rwXItU7p"; dkim=permerror (0-bit key) header.d=mainlining.org header.i=@mainlining.org header.b="eQ332XR5" DKIM-Signature: v=1; a=rsa-sha256; s=202507r; d=mainlining.org; c=relaxed/relaxed; h=Message-ID:Subject:To:From:Date; t=1788965108; bh=Wm2geJlbtGbU92IZqu+eW8m 0JT5CwaWOaBBT2z+SwHo=; b=rwXItU7pH72zB0D/BX831s78+axJv8WNyiUVJbPbmr+v+ca0iv Kp3yNZgIdQmLiSgld1J/BCxtgtSxeME+4jWvWsc9e+X4IlgoXcgBhQXU+cL0tnlaoTVAd4ySEQx i06xtXV6G0oYdk8QxofW096Z4J8JSwmJ8AVo36GkwYATG7j61Vm7Eda4NVACexD0LtomlsW1hIF 8Qq9kgOD9J7SY4OkqP1fCO/pUHVqnpqCZ/khJ5czQdZGWVCIOj1eQuNERQYnx+nwDZzz7NkdSzB kGVG3vBcyQzKTifgKzF1Bzg9+xptPOAkeXlbv680MmFQ/89BcTeW460/mE65Mjpbpmw==; DKIM-Signature: v=1; a=ed25519-sha256; s=202507e; d=mainlining.org; c=relaxed/relaxed; h=Message-ID:Subject:To:From:Date; t=1788965108; bh=Wm2geJlbtGbU92IZqu+eW8m 0JT5CwaWOaBBT2z+SwHo=; b=eQ332XR52iPJulGnX5vlJ+6ddc6RAyiihpHC5U83VmpXXhWnrn P9cvLPGuSD7cYw9NHLY7KpxQ8o5zk6ULRXAA==; Date: Wed, 09 Sep 2026 15:45:06 +0100 From: Bradley Morgan To: Mark Rutland , Will Deacon CC: Catalin Marinas , James Morse , Marc Zyngier , Ard Biesheuvel , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/7] arm64: hibernate: dust off the suspend/cleanup rework In-Reply-To: References: <20260825205839.14571-1-brads@mainlining.org> Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit On 9 September 2026 10:05:16 BST, Mark Rutland wrote: >Hi Will, > >On Thu, Sep 03, 2026 at 11:53:59AM +0100, Will Deacon wrote: >> it's worth noting that Bradley's patch _does_ fix one of the >> hibernation problems and has been tested by Vladimir: >> >> https://lore.kernel.org/all/20260809213615.11646-1-include@grrlz.net/ >> >> I would prefer to take your complete set of patches, but if you don't >> want that then should I just take the above for now? Prior to this >> series, there has been no activity for nearly two years on your branch, >> so I'd prefer to get _something_ in, even if it only fixes some of the >> problems. > >Sorry for the delay. > >I'd prefer if you picked up Bradley's single patch for now. I'll follow >up with a respin of the rest of the cleanup and fixes shortly. Oh, so I didn't need to do all that? Urgh.. > >Could you add a note to the commit message as to how Vladimir was able >to trigger a hang with CONFIG_PAGE_POISONING=y and page_poison=on? It's >helpful for anyone testing a backport, etc. > >With that: > >Acked-by: Mark Rutland > >For context, when I originally wrote my patches, I hadn't managed to >trigger failures at top level without additional hacks, and so this >hadn't been a high priority. Given that Vladimir can trigger this >specific issue with existing options, it makes sense to pick that up. > >I had a vague recollection that this specific fix lead to a secondary >issue, but digging through my notes I can't see what that would have >been, and I suspect I had just gotten confused w.r.t. what KVM was >doing. If I find there was a real secondary issue I'll follow up with a >fix . > >Thanks, >Mark. --- Thanks! https://lore.kernel.org/all/EE579805-42F2-4C58-B752-F28779EEB717@grrlz.net/