From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 3BA9C320CB1; Fri, 10 Jul 2026 22:11:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783721514; cv=none; b=WKdVoNQ3Dmvaxjl5TuoQZCxNV6aZVpZmRlXx8eMUQNWrWEwmTnyfI7JUZe8juJgZEtr40hNT6lnWWzE8jJ9st2nvFpbmGUa44zZ+PwzgWQHgGLIAOXy0rTvlgj8ggmg3f2eK/3tbtW5htsPcyQJnqh0Mew2PbfHZbicNgpEYRvA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783721514; c=relaxed/simple; bh=naM5Jxp0pAiHPL/CzBxLvvWlgl0VyG5fCmsLj54Q2XQ=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=CexhhyOACnNVMVgfVvhjiWUxcGDMLbakXEXKG9O8VojKUvErRrazpVg+NaeI3bdAFOy1yMFhRIi+gmF5uCw8LzjcRFYIPOWvfNioLSLzwxEtJP0xKIswQvhDuDgBEVVVYxy53/fWkC1y42HXSzdfFwHWELHZdwCL8UA27iUlPHM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=isSd+YdI; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="isSd+YdI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9ABEA1F000E9; Fri, 10 Jul 2026 22:11:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1783721512; bh=vJbMePxYpylcp4oMY5TEvTIXxy0y15lVec2d7nGNr/0=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=isSd+YdIk2oKRkj18Y+rPxVD68aDvGRkC3Gfz17Do9Znb6noKkhNVD6qZ2vomkJnV Vz3mMRKNl/P1Rv/PJH445qJc6+MsAE7TmU46muPg/2k1wbFohRwIe8WbSdXx1BmEdU TG5W4PVDlLUdPHejARtAkCr9JonW/gFOE5KBW7kI= Date: Fri, 10 Jul 2026 15:11:51 -0700 From: Andrew Morton To: Stanislav Kinsburskii Cc: airlied@gmail.com, akhilesh@ee.iitb.ac.in, corbet@lwn.net, dakr@kernel.org, david@kernel.org, decui@microsoft.com, haiyangz@microsoft.com, jgg@ziepe.ca, kees@kernel.org, kys@microsoft.com, leon@kernel.org, liam@infradead.org, lizhi.hou@amd.com, ljs@kernel.org, longli@microsoft.com, lyude@redhat.com, maarten.lankhorst@linux.intel.com, mamin506@gmail.com, mhocko@suse.com, mripard@kernel.org, nouveau@lists.freedesktop.org, ogabbay@kernel.org, oleg@redhat.com, rppt@kernel.org, shuah@kernel.org, simona@ffwll.ch, skhan@linuxfoundation.org, surenb@google.com, tzimmermann@suse.de, vbabka@kernel.org, wei.liu@kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-rdma@vger.kernel.org Subject: Re: [PATCH v8 0/8] mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings Message-Id: <20260710151151.1e193eedd0cf2591ae392f76@linux-foundation.org> In-Reply-To: <178371866223.900500.12312667138651735591.stgit@skinsburskii> References: <178371866223.900500.12312667138651735591.stgit@skinsburskii> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Fri, 10 Jul 2026 14:26:20 -0700 Stanislav Kinsburskii wrote: > This series extends the HMM framework to support userfaultfd-backed memory > by allowing the mmap read lock to be dropped during hmm_range_fault(). Thanks. This seems fairly mature and mostly-reviewed so I'll give it a spin in mm.git's mm-new branch. Unfortunately Sashiko wasn't able to apply this or v7. I'm not sure what base you were using. Hopefully there's a reason for a v9 so we can retry this. I have a few niggles, nothing major...