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| author |  Jason Wang <jasowang@redhat.com>
| 2020-03-26 22:01:20 +0800 |
|---|---|---|
| committer |  Michael S. Tsirkin <mst@redhat.com>
| 2020-04-01 12:06:26 -0400 |
| commit | 9ad9c49cfe970b053bb0ef323b682dd1b4d4f8a0 (patch) | |
| tree | 92f1cb32d9e41467a75d1c3e5fa973cc5eefc9fa /drivers/vhost/Kconfig | |
| parent | vhost: factor out IOTLB (diff) | |
| download | linux-9ad9c49cfe970b053bb0ef323b682dd1b4d4f8a0.tar.gz linux-9ad9c49cfe970b053bb0ef323b682dd1b4d4f8a0.tar.bz2 linux-9ad9c49cfe970b053bb0ef323b682dd1b4d4f8a0.zip | |
vringh: IOTLB support
This patch implements the third memory accessor for vringh besides
current kernel and userspace accessors. This idea is to allow vringh
to do the address translation through an IOTLB which is implemented
via vhost_map interval tree. Users should setup and IOVA to PA mapping
in this IOTLB.
This allows us to:
- Use vringh to access virtqueues with vIOMMU
- Use vringh to implement software virtqueues for vDPA devices
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200326140125.19794-5-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/Kconfig')
| -rw-r--r-- | drivers/vhost/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig index 37400a1655b4..128238488078 100644 --- a/drivers/vhost/Kconfig +++ b/drivers/vhost/Kconfig @@ -6,6 +6,7 @@ config VHOST_IOTLB config VHOST_RING tristate + select VHOST_IOTLB help This option is selected by any driver which needs to access the host side of a virtio ring. |