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 BEB7933A702; Thu, 28 May 2026 20:11:16 +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=1779999077; cv=none; b=gAo3XlF+Eox1PghvZEqDE4h6wwqIX2hw5zSz7xu2bP1/ZU43RZWNqjwSbQSI7Mygvr+cf3tdio5WvzxQNDtknNE8Xicqs0HxLcgrtOy+7jSVETUswYrQxyrvncQ5HeAFRXybNwLLkJ2D9FJRUaKlQMIrqr+DMECF8FCQaNiw774= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779999077; c=relaxed/simple; bh=h7vMU9iiuA671z5I/L7lm643Un9uDzaFmhvDfqVYsEc=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=TAj4l8LTb17OvbMSPXO4XTgTnJUHWg5/ePbYU/SVeJk/GtAQZLPLS7KZ1hsvmN3B4RzlrirEHl9oirj7tQniekPaxx6sVR2H3k9xpaAG88CtVoWMIiAQFitPT0tI9FO27Ifzb2Hpj0XgNadRBA5Xohx+IsA1cOoOcMwEk5meePU= 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=ekq60DDN; 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="ekq60DDN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C5A01F000E9; Thu, 28 May 2026 20:11:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1779999076; bh=RUpZENdsRQQGhSTXMjyju/sJ1S/GlspTzkqqk0lo4CY=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=ekq60DDN0/EfqbYTRZfD1WiirUXWxQTPTxY16rdb4/7wMAOQIUWk323IYixJjRiPk jkmhpvi9QLv+pmc6Yu7hQnEn5mwLQcrYWkOPOryXldXhd3rlh3reJtix4vap6bVGE2 Jewn63vowTVwVLGqclVBqi7ztiwbv7FXpQC6FQNo= Date: Thu, 28 May 2026 13:11:15 -0700 From: Andrew Morton To: Stanislav Kinsburskii Cc: Liam.Howlett@oracle.com, david@kernel.org, jgg@ziepe.ca, corbet@lwn.net, leon@kernel.org, ljs@kernel.org, mhocko@suse.com, rppt@kernel.org, shuah@kernel.org, skhan@linuxfoundation.org, surenb@google.com, vbabka@kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v3 0/3] mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings Message-Id: <20260528131115.184c178d03d516e11248a1ae@linux-foundation.org> In-Reply-To: References: <177928604779.589431.14703161356676674288.stgit@skinsburskii> <20260521163309.c5cc5d3f6cf16bac212cf90b@linux-foundation.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-doc@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 Thu, 28 May 2026 12:53:59 -0700 Stanislav Kinsburskii wrote: > A gentle reminder as requested: do you think this change could be taken into > the mm tree? > It's beneficial not only for the MSHV driver, but can be used for > post-copy live migration of GPU states in future. Still no review, alas. It's not a trivial thing, affecting both hmm and userfaultfd. And we're closing in on -rc6. I'd prefer that we revisit in the next cycle, please. Refresh retest and resend after -rc1?