Re: [PATCH v6 08/11] eal: pci: introduce RTE_KDRV_VFIO_NOIOMMUi driver mode
From: David Marchand <hidden>
Date: 2016-01-21 10:32:55
Santosh, On Tue, Jan 19, 2016 at 7:57 PM, Santosh Shukla [off-list ref] wrote:
Adding RTE_KDRV_VFIO_NOIOMMU mode in kernel driver. Also including rte_vfio_is_noiommu() helper function. This function will parse /sys/bus/pci/device/<bus_addr>/ and make sure that - vfio noiommu mode set in kernel driver - pci device attached to vfio-noiommu driver only If both condition satisfies then set drv->kdrv = RTE_KDRV_VFIO_NOIOMMU Also did similar changes in virtio_rd/wr, Changes applicable for virtio spec 0.95 only.
This is a mode (specific to vfio), not a new kernel driver. How come we need to distinguish between with/without iommu modes ? Should not vfio behave the same way from an api point of view ? Regards, -- David Marchand