linux/drivers/virtio
Will Deacon 817fc978b5 virtio_ring: Fix querying of maximum DMA mapping size for virtio device
virtio_max_dma_size() returns the maximum DMA mapping size of the virtio
device by querying dma_max_mapping_size() for the device when the DMA
API is in use for the vring. Unfortunately, the device passed is
initialised by register_virtio_device() and does not inherit the DMA
configuration from its parent, resulting in SWIOTLB errors when bouncing
is enabled and the default 256K mapping limit (IO_TLB_SEGSIZE) is not
respected:

  | virtio-pci 0000:00:01.0: swiotlb buffer is full (sz: 294912 bytes), total 1024 (slots), used 725 (slots)

Follow the pattern used elsewhere in the virtio_ring code when calling
into the DMA layer and pass the parent device to dma_max_mapping_size()
instead.

Cc: Marc Zyngier <maz@kernel.org>
Cc: Quentin Perret <qperret@google.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20211201112018.25276-1-will@kernel.org
Acked-by: Jason Wang <jasowang@redhat.com>
Tested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Fixes: e6d6dd6c87 ("virtio: Introduce virtio_max_dma_size()")
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-12-08 15:04:06 -05:00
..
Kconfig Merge branch 'akpm' (patches from Andrew) 2021-11-09 10:11:53 -08:00
Makefile virtio-pci: introduce legacy device module 2021-11-01 04:30:34 -04:00
virtio_balloon.c virtio-balloon: Use virtio_find_vqs() helper 2021-09-06 07:20:56 -04:00
virtio_dma_buf.c dma-buf: move dma-buf symbols into the DMA_BUF module namespace 2021-10-25 14:53:08 +02:00
virtio_input.c virtio-input: add multi-touch support 2021-02-23 07:52:59 -05:00
virtio_mem.c virtio-mem: support VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE 2021-11-10 15:32:38 +01:00
virtio_mmio.c virtio-mmio: Use to_virtio_mmio_device() to simply code 2021-03-14 04:37:35 -04:00
virtio_pci_common.c virtio-pci: harden INTX interrupts 2021-11-01 05:26:48 -04:00
virtio_pci_common.h virtio-pci: harden INTX interrupts 2021-11-01 05:26:48 -04:00
virtio_pci_legacy_dev.c virtio-pci: introduce legacy device module 2021-11-01 04:30:34 -04:00
virtio_pci_legacy.c virtio_pci: harden MSI-X interrupts 2021-11-01 05:26:48 -04:00
virtio_pci_modern_dev.c virtio-pci library: introduce vp_modern_get_driver_features() 2021-07-08 07:49:01 -04:00
virtio_pci_modern.c virtio_pci: harden MSI-X interrupts 2021-11-01 05:26:48 -04:00
virtio_ring.c virtio_ring: Fix querying of maximum DMA mapping size for virtio device 2021-12-08 15:04:06 -05:00
virtio_vdpa.c vdpa: Introduce and use vdpa device get, set config helpers 2021-11-01 05:26:49 -04:00
virtio.c virtio: write back F_VERSION_1 before validate 2021-10-13 08:35:36 -04:00