linux-kernel - Re: [PATCH 6/6] RDMA/umem: add support for P2P RDMA

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Message-ID: <20240610121154.GH791043@ziepe.ca>
Date: Mon, 10 Jun 2024 09:11:54 -0300
From: Jason Gunthorpe <jgg@...pe.ca>
To: Martin Oliveira <martin.oliveira@...eticom.com>
Cc: linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-mm@...ck.org,
	Leon Romanovsky <leon@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Logan Gunthorpe <logang@...tatee.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Tejun Heo <tj@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Marciniszyn <mike.marciniszyn@...el.com>,
	Michael Guralnik <michaelgur@...dia.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Ard Biesheuvel <ardb@...nel.org>,
	Valentine Sinitsyn <valesini@...dex-team.ru>,
	Lukas Wunner <lukas@...ner.de>
Subject: Re: [PATCH 6/6] RDMA/umem: add support for P2P RDMA

On Wed, Jun 05, 2024 at 01:29:34PM -0600, Martin Oliveira wrote:
> If the device supports P2PDMA, add the FOLL_PCI_P2PDMA flag
> 
> This allows ibv_reg_mr() and friends to use P2PDMA memory that has been
> mmaped into userspace for MRs in IB and RDMA transactions.
> 
> Co-developed-by: Logan Gunthorpe <logang@...tatee.com>
> Signed-off-by: Logan Gunthorpe <logang@...tatee.com>
> Signed-off-by: Martin Oliveira <martin.oliveira@...eticom.com>
> ---
>  drivers/infiniband/core/umem.c | 3 +++
>  1 file changed, 3 insertions(+)

Acked-by: Jason Gunthorpe <jgg@...dia.com>

Jason