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 6D32F72618;
	Wed,  5 Nov 2025 08:16:15 +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=1762330575; cv=none; b=syqY1ZwWiCHZUeqeY2vNCbop4LDhD+riNHOuxH4uJIFuMyICxS5pX1YOddRC+1V0MeIbeJ/a/m7VVkA2Hea4IzTI2dw2lH/INvG+E/QIoaJB5cx3ZTAQQCiaLoT00zcmGoT6Q4lxQqZXbGF69Fu4InCrs5Ms0susf6DctZfePl8=
ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org;
	s=arc-20240116; t=1762330575; c=relaxed/simple;
	bh=udr6mKWYM6gsMhi6l+HmrtMsrAYtMveuKFz9q/uMFUA=;
	h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version:
	 Content-Type:Content-Disposition:In-Reply-To; b=soszqWEdRUwirp8G3oUyi6L8EvHVOpBxgDEiBIpmjYO0QDBQ+qkD1W7/wYcG58K6l4Au4E1vVBeTiU2Cv0LhBerx2+kVl4LucFbAZ4cTx6kUCvppGGyTM+eThCPWhKtSjmeZWVxKeqavheLBveMP0Wu4nCMHtfql3fJrTU1W94k=
ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Snx30Fxc; arc=none smtp.client-ip=10.30.226.201
Authentication-Results: smtp.subspace.kernel.org;
	dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Snx30Fxc"
Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6264CC4CEF8;
	Wed,  5 Nov 2025 08:16:14 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;
	s=k20201202; t=1762330575;
	bh=udr6mKWYM6gsMhi6l+HmrtMsrAYtMveuKFz9q/uMFUA=;
	h=Date:From:To:Cc:Subject:References:In-Reply-To:From;
	b=Snx30FxcGRCf73Ui5tRrgwEAD2Zywqm32IJNeGhhqcKAbrPqP6nqCFttnO2dDSOm4
	 3qR6wpowVnsvjN0rwPIcLCShDuoZ5jSJWmC7CGsP6fpxjY9i+SYJqWP6IoqWRVLYgf
	 e4bq4qsJHj5tESPoXkPb0y8ytBDZ651wLfxCDqqJ9jA7XEK+WyuSgYvwy/Vm7Wwx/r
	 zDkGgwhiDkELDGQgAB6nFzEU8HLSdIepIq4qHMlwOlYKVPQ+8SSA7rk1T7llt7a4zh
	 qq/vaQ03kHbDoE7Sm1LenUPP2wbTMl4R8vo6i0BKl/7ynTmFOtTjZ+2cneXSjREyQ0
	 hXQ5dtAYUVrzw==
Date: Wed, 5 Nov 2025 10:16:09 +0200
From: Leon Romanovsky <leon@kernel.org>
To: Alex Mastro <amastro@fb.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
	Logan Gunthorpe <logang@deltatee.com>, Jens Axboe <axboe@kernel.dk>,
	Robin Murphy <robin.murphy@arm.com>, Joerg Roedel <joro@8bytes.org>,
	Will Deacon <will@kernel.org>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Jason Gunthorpe <jgg@ziepe.ca>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Sumit Semwal <sumit.semwal@linaro.org>,
	Christian =?iso-8859-1?Q?K=F6nig?= <christian.koenig@amd.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Kees Cook <kees@kernel.org>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	Ankit Agrawal <ankita@nvidia.com>,
	Yishai Hadas <yishaih@nvidia.com>,
	Shameer Kolothum <skolothumtho@nvidia.com>,
	Kevin Tian <kevin.tian@intel.com>,
	Krishnakant Jaju <kjaju@nvidia.com>, Matt Ochs <mochs@nvidia.com>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-block@vger.kernel.org, iommu@lists.linux.dev,
	linux-mm@kvack.org, linux-doc@vger.kernel.org,
	linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linaro-mm-sig@lists.linaro.org, kvm@vger.kernel.org,
	linux-hardening@vger.kernel.org,
	Vivek Kasireddy <vivek.kasireddy@intel.com>
Subject: Re: [PATCH v6 00/11] vfio/pci: Allow MMIO regions to be exported
 through dma-buf
Message-ID: <20251105081609.GA16832@unreal>
References: <20251102-dmabuf-vfio-v6-0-d773cff0db9f@nvidia.com>
 <aQkLcAxEn4qmF3c4@devgpu015.cco6.facebook.com>
Precedence: bulk
X-Mailing-List: linux-pci@vger.kernel.org
List-Id: <linux-pci.vger.kernel.org>
List-Subscribe: <mailto:linux-pci+subscribe@vger.kernel.org>
List-Unsubscribe: <mailto:linux-pci+unsubscribe@vger.kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <aQkLcAxEn4qmF3c4@devgpu015.cco6.facebook.com>

On Mon, Nov 03, 2025 at 12:07:12PM -0800, Alex Mastro wrote:
> On Sun, Nov 02, 2025 at 10:00:48AM +0200, Leon Romanovsky wrote:
> > Changelog:
> > v6:
> >  * Fixed wrong error check from pcim_p2pdma_init().
> >  * Documented pcim_p2pdma_provider() function.
> >  * Improved commit messages.
> >  * Added VFIO DMA-BUF selftest.
> >  * Added __counted_by(nr_ranges) annotation to struct vfio_device_feature_dma_buf.
> >  * Fixed error unwind when dma_buf_fd() fails.
> >  * Document latest changes to p2pmem.
> >  * Removed EXPORT_SYMBOL_GPL from pci_p2pdma_map_type.
> >  * Moved DMA mapping logic to DMA-BUF.
> >  * Removed types patch to avoid dependencies between subsystems.
> >  * Moved vfio_pci_dma_buf_move() in err_undo block.
> >  * Added nvgrace patch.
> 
> Thanks Leon. Attaching a toy program which sanity tests the dma-buf export UAPI
> by feeding the allocated dma-buf into an dma-buf importer (libibverbs + CX-7).
>  
> Tested-by: Alex Mastro <amastro@fb.com>

Thanks a lot.