From patchwork Tue Jul 2 09:09:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 13719160 X-Patchwork-Delegate: bhelgaas@google.com 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 4F79C1741DC; Tue, 2 Jul 2024 09:10:57 +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=1719911458; cv=none; b=mjcwnqWGsHcv0mYlyawy6JSIcoW6VKRorZIf8S0PhsFq0124p0toCRr72IgQ81LeIvp2U/+tAK1OvL4TYWpSdwKYS1qMmSTOIWdRLgzA1MoqqXTILEWELOXrKfYTi3JTD9XW8o3dhPfTUPeUDWvYQoc0OuwejwLkn3zq9V4PKzU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719911458; c=relaxed/simple; bh=SkqFHwOM6KJzTXdmnNBw1x88eUJ1/2PlxqGXP9zV2ZU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TmAdzPoEQ8S6eVi2RFGNVfB/6oW80wjlq8lspQyXAl+CZBVcUPJ6XNgYdgpNiT2XklP+tB8svyvAwMH9Hs3Pwh2URsTQerYoA9cxVBSMmBCbz0vxwy5UfyIzTKiCszPhERqM+pmXTSqsgtRdnpXt0wWfGveUhfMpvvQkkUpzW6s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=A9QLYC0x; 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="A9QLYC0x" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0CADCC116B1; Tue, 2 Jul 2024 09:10:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719911457; bh=SkqFHwOM6KJzTXdmnNBw1x88eUJ1/2PlxqGXP9zV2ZU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A9QLYC0xA24DxduqY3heCuvEMv2g+F4kcqj46l7twDf7eoAjLAfDXUqwWewJv15rI V4ngl5OKU+cYCEmcoA1OWEcg+g4LDqDL7IRuO5NiDytGijovb3mdlf1czP84Qh/8w1 gojGNLjQCBZqSCRgaAAiURw+YEKUsuwnCMNl6nCr2hlpPPb4vGZE4NXCFAJUYCIcpD dAJi7vB/mecxRkG5SOV39gduWkn/DXvyFUwGe+XPrw4P8XlIk54V56l6s3+MBenBuR aHhZJAvI2iVoMTtjqvR2irRwgfTxB8wUnp7xjwsi9Cd0akPOCz7fVXYus3N3dY3QeP 1txEpEBqSvlag== 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 PATCH v1 09/18] RDMA/umem: Preallocate and cache IOVA for UMEM ODP Date: Tue, 2 Jul 2024 12:09:39 +0300 Message-ID: <2d04e220fea52a41f2005c3a3e2123c3967af88f.1719909395.git.leon@kernel.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-pci@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 | 14 +++++++++++++- include/rdma/ib_umem_odp.h | 1 + 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c index e9fa22d31c23..955bf338b1bf 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 +88,25 @@ static inline int ib_init_umem_odp(struct ib_umem_odp *umem_odp, goto out_pfn_list; } + umem_odp->iova.dev = dev->dma_device; + umem_odp->iova.size = end - start; + umem_odp->iova.dir = DMA_BIDIRECTIONAL; + ret = dma_alloc_iova(&umem_odp->iova); + 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->iova); out_dma_list: kvfree(umem_odp->dma_list); out_pfn_list: @@ -274,6 +285,7 @@ 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->iova); 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..bb2d7f2a5b04 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_attrs iova; /* * 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