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Tue, 15 Oct 2019 11:16:16 -0700 (PDT) Received: from ziepe.ca ([24.114.26.129]) by smtp.gmail.com with ESMTPSA id b3sm2941671iln.42.2019.10.15.11.16.15 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 15 Oct 2019 11:16:16 -0700 (PDT) Received: from jgg by jggl.ziepe.ca with local (Exim 4.90_1) (envelope-from ) id 1iKRJT-0002CL-IH; Tue, 15 Oct 2019 15:12:51 -0300 From: Jason Gunthorpe To: Jerome Glisse , Ralph Campbell , John Hubbard , Felix.Kuehling@amd.com Cc: linux-rdma@vger.kernel.org, linux-mm@kvack.org, Andrea Arcangeli , dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Ben Skeggs , Jason Gunthorpe , Oleksandr Andrushchenko , Boris Ostrovsky , xen-devel@lists.xenproject.org, Juergen Gross , Stefano Stabellini Subject: [PATCH hmm 08/15] xen/gntdev: Use select for DMA_SHARED_BUFFER Date: Tue, 15 Oct 2019 15:12:35 -0300 Message-Id: <20191015181242.8343-9-jgg@ziepe.ca> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191015181242.8343-1-jgg@ziepe.ca> References: <20191015181242.8343-1-jgg@ziepe.ca> MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Jason Gunthorpe DMA_SHARED_BUFFER can not be enabled by the user (it represents a library set in the kernel). The kconfig convention is to use select for such symbols so they are turned on implicitly when the user enables a kconfig that needs them. Otherwise the XEN_GNTDEV_DMABUF kconfig is overly difficult to enable. Fixes: 932d6562179e ("xen/gntdev: Add initial support for dma-buf UAPI") Cc: Oleksandr Andrushchenko Cc: Boris Ostrovsky Cc: xen-devel@lists.xenproject.org Cc: Juergen Gross Cc: Stefano Stabellini Signed-off-by: Jason Gunthorpe Reviewed-by: Juergen Gross Reviewed-by: Oleksandr Andrushchenko --- drivers/xen/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 79cc75096f4232..a50dadd0109336 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -141,7 +141,8 @@ config XEN_GNTDEV config XEN_GNTDEV_DMABUF bool "Add support for dma-buf grant access device driver extension" - depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC && DMA_SHARED_BUFFER + depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC + select DMA_SHARED_BUFFER help Allows userspace processes and kernel modules to use Xen backed dma-buf implementation. With this extension grant references to