From patchwork Thu Sep 12 11:15:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 13801986 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 D4F9F1A2631; Thu, 12 Sep 2024 11:16:41 +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=1726139802; cv=none; b=okIAiniDGX56RdHfmAdwk+nYzcS1+76y8MF8eudPHaw7SkKlPg8sNw0DSWPSsbyN/RodadXqBksqaXBqtxDDdYHtXaw3B7IXAna9R9ETHoTCfyYhTbMe7+2eoPMW7DrgWm/y4HBXguR3mrOXIEN/nqmef6kTv93Xp/upn/tyUTc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726139802; c=relaxed/simple; bh=cWTZ/vX5KH29DDePm3J0/PIuPOYHHrOmAmy/4Xsjr4k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SDMbo4ysxaMpwhYinqfduP+y08og3OZb1QYGli6kY9/vpYy23nQbj9ADmIr9mcYmxoSiglBrKDJulHMvDq2xLzS0MfsqECbofDnkE6QAyLTCkU0KwJBYaZGUwqvqq+uf8NOzuzfaKt3QnO91VNnCwO7//T7MGyuwPb0Kgm9weIU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MaNgzGuY; 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="MaNgzGuY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A155AC4CEC3; Thu, 12 Sep 2024 11:16:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1726139801; bh=cWTZ/vX5KH29DDePm3J0/PIuPOYHHrOmAmy/4Xsjr4k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MaNgzGuYutMZ4S+zhyYnCR1nQ7/cVUpL4cqJdHGuAEl1wmik2EzqsRYrKwjzPSgGy sfidRPgO4zHN72I0olnabe+xMFut7ZSLfoMfElMezA5aKgxLkIlLNFrWStvp5nrBQe WIU+RNQrJtth1GJ+9XevvCvmshuuvPMj21JSNCgv1OQQ6sBN2NPFmAViYUr2n9nfgn dbjpF0kXfzUGO92UMShptYWEvda0Nuu3fgD16HzX7heBADacYrIS4+3hYZbE1tbiNB QNt5RqCvZK/+hGQmCeSmU9XwJusDixnsAIA3mt2lH8BGiBECYIR+WZoJ5CVwVtemKh 8zM6C899KSD3A== From: Leon Romanovsky To: Jens Axboe , Jason Gunthorpe , Robin Murphy , Joerg Roedel , Will Deacon , Keith Busch , Christoph Hellwig , "Zeng, Oak" , Chaitanya Kulkarni Cc: Leon Romanovsky , Sagi Grimberg , Bjorn Helgaas , Logan Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , Marek Szyprowski , =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , Andrew Morton , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org Subject: [RFC v2 10/21] RDMA/umem: Preallocate and cache IOVA for UMEM ODP Date: Thu, 12 Sep 2024 14:15:45 +0300 Message-ID: X-Mailer: git-send-email 2.46.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Leon Romanovsky As a preparation to provide two step interface to map pages, preallocate IOVA when UMEM is initialized. Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/umem_odp.c | 13 ++++++++++++- include/rdma/ib_umem_odp.h | 1 + 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c index e9fa22d31c23..01cbf7f55b3a 100644 --- a/drivers/infiniband/core/umem_odp.c +++ b/drivers/infiniband/core/umem_odp.c @@ -50,6 +50,7 @@ static inline int ib_init_umem_odp(struct ib_umem_odp *umem_odp, const struct mmu_interval_notifier_ops *ops) { + struct ib_device *dev = umem_odp->umem.ibdev; int ret; umem_odp->umem.is_odp = 1; @@ -87,15 +88,24 @@ static inline int ib_init_umem_odp(struct ib_umem_odp *umem_odp, goto out_pfn_list; } + dma_init_iova_state(&umem_odp->state, dev->dma_device, + DMA_BIDIRECTIONAL); + ret = dma_alloc_iova(&umem_odp->state, end - start); + if (ret) + goto out_dma_list; + + ret = mmu_interval_notifier_insert(&umem_odp->notifier, umem_odp->umem.owning_mm, start, end - start, ops); if (ret) - goto out_dma_list; + goto out_free_iova; } return 0; +out_free_iova: + dma_free_iova(&umem_odp->state); out_dma_list: kvfree(umem_odp->dma_list); out_pfn_list: @@ -274,6 +284,7 @@ void ib_umem_odp_release(struct ib_umem_odp *umem_odp) ib_umem_end(umem_odp)); mutex_unlock(&umem_odp->umem_mutex); mmu_interval_notifier_remove(&umem_odp->notifier); + dma_free_iova(&umem_odp->state); kvfree(umem_odp->dma_list); kvfree(umem_odp->pfn_list); } diff --git a/include/rdma/ib_umem_odp.h b/include/rdma/ib_umem_odp.h index 0844c1d05ac6..c0c1215925eb 100644 --- a/include/rdma/ib_umem_odp.h +++ b/include/rdma/ib_umem_odp.h @@ -23,6 +23,7 @@ struct ib_umem_odp { * See ODP_READ_ALLOWED_BIT and ODP_WRITE_ALLOWED_BIT. */ dma_addr_t *dma_list; + struct dma_iova_state state; /* * The umem_mutex protects the page_list and dma_list fields of an ODP * umem, allowing only a single thread to map/unmap pages. The mutex