From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2F0693E2ADD for ; Tue, 19 May 2026 21:03:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779224638; cv=none; b=Gg/igTfSE3BDDKUFMph2KTcjTXB+f2KJKhQrA4bxNdaUcOpS5REKpk0fBsfH2evPYp/I/dqaZ3dkD/F/rXJqVjqTWIHV4ao2wvPvzjFglP82ixLUiplos1NAmTZn9GDzecDZobvYwUREBiKRtu+tkmRuam7lLB392VbcB3uTV4Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779224638; c=relaxed/simple; bh=7lskqn26rq6tTNwK1bV4v0JSuUkq9H1pEJwY2Ub670s=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LzgpbLAImMXFQRpdGZjSD6CbUXTj2KW2KvbH6QoS54ngCdjgvWNn4FMmg/yaUmCLh3M0JMnEA0ymctIL3nv1FA0rKj6IWScQUYgE2s1+BTlgvalFud/Z0Qv8E6MD+VMC9daIU7szqMWNtpmemTnH77WGBpF+XQvTTb29EsTT+8E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=gX3o2Jag; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="gX3o2Jag" Received: from localhost (unknown [20.236.10.206]) by linux.microsoft.com (Postfix) with ESMTPSA id 9623420B7167; Tue, 19 May 2026 14:03:43 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 9623420B7167 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1779224624; bh=oWgyrpRAn58pjiIs+zN/w5MJ680FMEvCTgi9+J1g8zs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=gX3o2JagM9yOXq+8mrjI11q2R99Kgah25cfcdFDTX+Qa2MaXAWlC6fSc34VAQQQZ5 6BbN8GBHW1xGbD1/tgkUyhdEoeVKZGUrCH1tCd0O1E76f4rUul/w9KPUUO2zmOdrUC 7NT2Qp3LbvWZW4wWJgAoAxB+2f4zZ9Lv/KhVBZA4= Date: Tue, 19 May 2026 14:03:48 -0700 From: Jacob Pan To: Jason Gunthorpe , Baolu Lu Cc: Alex Williamson , linux-kernel@vger.kernel.org, "iommu@lists.linux.dev" , Joerg Roedel , Mostafa Saleh , David Matlack , Robin Murphy , Nicolin Chen , "Tian, Kevin" , Yi Liu , Saurabh Sengar , skhawaja@google.com, pasha.tatashin@soleen.com, Will Deacon , jacob.pan@linux.microsoft.com Subject: Re: [PATCH v5 0/9] iommufd: Enable noiommu mode for cdev Message-ID: <20260519140348.00003c87@linux.microsoft.com> In-Reply-To: <20260519180156.GI3602937@nvidia.com> References: <20260511184116.3687392-1-jacob.pan@linux.microsoft.com> <20260519180156.GI3602937@nvidia.com> Organization: LSG X-Mailer: Claws Mail 3.21.0 (GTK+ 2.24.33; x86_64-w64-mingw32) 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=US-ASCII Content-Transfer-Encoding: 7bit Hi Jason, On Tue, 19 May 2026 15:01:56 -0300 Jason Gunthorpe wrote: > On Mon, May 11, 2026 at 11:41:05AM -0700, Jacob Pan wrote: > > VFIO's unsafe_noiommu_mode has long provided a way for userspace > > drivers to operate on platforms lacking a hardware IOMMU. Today, > > IOMMUFD also supports No-IOMMU mode for group-based devices under > > vfio_compat mode. However, IOMMUFD's native character device (cdev) > > does not yet support No-IOMMU mode, which is the purpose of this > > patch. > > I would like to try to take this for this cycle, how are we doing for > a v6? I will send out v6 with Baolu's feedback in a couple of days. > Alex, did you have any remarks? > > Thanks, > Jason