From: Bart Van Assche <bvanassche@acm.org>
To: mhklinux@outlook.com, kbusch@kernel.org, axboe@kernel.dk,
sagi@grimberg.me, James.Bottomley@HansenPartnership.com,
martin.petersen@oracle.com, kys@microsoft.com,
haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
robin.murphy@arm.com, hch@lst.de, m.szyprowski@samsung.com,
petr@tesarici.cz, iommu@lists.linux.dev,
linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
linux-scsi@vger.kernel.org, linux-hyperv@vger.kernel.org,
linux-coco@lists.linux.dev
Subject: Re: [RFC 0/7] Introduce swiotlb throttling
Date: Thu, 22 Aug 2024 12:29:21 -0700 [thread overview]
Message-ID: <f8bb65ed-cdf2-4d23-b794-765ce0b48a4b@acm.org> (raw)
In-Reply-To: <20240822183718.1234-1-mhklinux@outlook.com>
On 8/22/24 11:37 AM, mhkelley58@gmail.com wrote:
> Linux device drivers may make DMA map/unmap calls in contexts that
> cannot block, such as in an interrupt handler.
Although I really appreciate your work, what alternatives have been
considered? How many drivers perform DMA mapping from atomic context?
Would it be feasible to modify these drivers such that DMA mapping
always happens in a context in which sleeping is allowed?
Thanks,
Bart.
next prev parent reply other threads:[~2024-08-22 19:29 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-22 18:37 [RFC 0/7] Introduce swiotlb throttling mhkelley58
2024-08-22 18:37 ` [RFC 1/7] swiotlb: " mhkelley58
2024-08-23 7:41 ` Petr Tesařík
2024-08-23 20:41 ` Michael Kelley
2024-08-27 15:55 ` Petr Tesařík
2024-08-27 17:30 ` Michael Kelley
2024-08-28 5:15 ` Petr Tesařík
2024-08-28 6:14 ` Michael Kelley
2024-08-22 18:37 ` [RFC 2/7] dma: Handle swiotlb throttling for SGLs mhkelley58
2024-08-23 8:02 ` Petr Tesařík
2024-08-23 20:42 ` Michael Kelley
2024-08-24 19:56 ` Petr Tesařík
2024-08-22 18:37 ` [RFC 3/7] dma: Add function for drivers to know if allowing blocking is useful mhkelley58
2024-08-23 8:07 ` Petr Tesařík
2024-08-22 18:37 ` [RFC 4/7] scsi_lib_dma: Add _attrs variant of scsi_dma_map() mhkelley58
2024-08-23 8:08 ` Petr Tesařík
2024-08-22 18:37 ` [RFC 5/7] scsi: storvsc: Enable swiotlb throttling mhkelley58
2024-08-23 8:19 ` Petr Tesařík
2024-08-23 20:42 ` Michael Kelley
2024-08-22 18:37 ` [RFC 6/7] nvme: Move BLK_MQ_F_BLOCKING indicator to struct nvme_ctrl mhkelley58
2024-08-23 8:22 ` Petr Tesařík
2024-08-22 18:37 ` [RFC 7/7] nvme: Enable swiotlb throttling for NVMe PCI devices mhkelley58
2024-08-23 8:26 ` Petr Tesařík
2024-08-22 19:29 ` Bart Van Assche [this message]
2024-08-23 2:20 ` [RFC 0/7] Introduce swiotlb throttling Michael Kelley
2024-08-23 5:46 ` Petr Tesařík
2024-08-24 8:05 ` hch
2024-08-23 6:44 ` Petr Tesařík
2024-08-23 20:40 ` Michael Kelley
2024-08-24 20:05 ` Petr Tesařík
2024-08-26 16:24 ` Michael Kelley
2024-08-26 19:28 ` Petr Tesařík
2024-08-27 0:26 ` Michael Kelley
2024-08-27 8:00 ` Petr Tesařík
2024-08-24 8:16 ` Christoph Hellwig
2024-08-26 15:27 ` Michael Kelley
2024-08-27 7:14 ` Christoph Hellwig
2024-08-28 12:02 ` Robin Murphy
2024-08-28 13:03 ` Petr Tesařík
2024-08-28 16:30 ` Michael Kelley
2024-08-28 16:41 ` Petr Tesařík
2024-08-28 19:50 ` Robin Murphy
2024-08-30 3:58 ` Michael Kelley
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