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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 | 0bbe30668d89ec8a309f28ced6d092c90fb23e8c (diff) | |
| download | linux-9ad9c49cfe970b053bb0ef323b682dd1b4d4f8a0.tar.gz | |
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. |