Displaying 5 results from an estimated 5 matches for "447245f2c813".
2017 Jan 10
0
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
...luto at kernel.org>
Cc: Michael S. Tsirkin <mst at redhat.com>
Signed-off-by: Will Deacon <will.deacon at arm.com>
---
drivers/virtio/virtio_ring.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 409aeaa49246..447245f2c813 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -159,6 +159,10 @@ static bool vring_use_dma_api(struct virtio_device *vdev)
if (xen_domain())
return true;
+ /* On ARM-based machines, the DMA ops will do the right thing */
+ if (IS_ENABLED(CONFIG_ARM) || IS_ENA...
2017 Jan 10
4
[PATCH v2 1/2] virtio_mmio: Set DMA masks appropriately
Once DMA API usage is enabled, it becomes apparent that virtio-mmio is
inadvertently relying on the default 32-bit DMA mask, which leads to
problems like rapidly exhausting SWIOTLB bounce buffers.
Ensure that we set the appropriate 64-bit DMA mask whenever possible,
with the coherent mask suitably limited for the legacy vring as per
a0be1db4304f ("virtio_pci: Limit DMA mask to 44 bits for
2017 Jan 10
4
[PATCH v2 1/2] virtio_mmio: Set DMA masks appropriately
Once DMA API usage is enabled, it becomes apparent that virtio-mmio is
inadvertently relying on the default 32-bit DMA mask, which leads to
problems like rapidly exhausting SWIOTLB bounce buffers.
Ensure that we set the appropriate 64-bit DMA mask whenever possible,
with the coherent mask suitably limited for the legacy vring as per
a0be1db4304f ("virtio_pci: Limit DMA mask to 44 bits for
2017 Jan 10
3
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
..._PLATFORM ?
I'd rather we avoided need for more hacks and just
have everyone switch to that.
> ---
> drivers/virtio/virtio_ring.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 409aeaa49246..447245f2c813 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -159,6 +159,10 @@ static bool vring_use_dma_api(struct virtio_device *vdev)
> if (xen_domain())
> return true;
>
> + /* On ARM-based machines, the DMA ops will do the right thing */
>...
2017 Jan 10
3
[PATCH v2 2/2] vring: Force use of DMA API for ARM-based systems
..._PLATFORM ?
I'd rather we avoided need for more hacks and just
have everyone switch to that.
> ---
> drivers/virtio/virtio_ring.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 409aeaa49246..447245f2c813 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -159,6 +159,10 @@ static bool vring_use_dma_api(struct virtio_device *vdev)
> if (xen_domain())
> return true;
>
> + /* On ARM-based machines, the DMA ops will do the right thing */
>...