On 2020/2/20 下午12:04, Randy Dunlap wrote:
On 2/19/20 7:56 PM, Jason Wang wrote:
This patch factors out IOTLB into a dedicated module in order to be
reused by other modules like vringh. User may choose to enable the
automatic retiring by specifying VHOST_IOTLB_FLAG_RETIRE flag to fit
for the case of vhost device IOTLB implementation.
Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
MAINTAINERS | 1 +
drivers/vhost/Kconfig | 7 ++
drivers/vhost/Makefile | 2 +
drivers/vhost/net.c | 2 +-
drivers/vhost/vhost.c | 221 +++++++++++-------------------------
drivers/vhost/vhost.h | 36 ++----
drivers/vhost/vhost_iotlb.c | 171 ++++++++++++++++++++++++++++
include/linux/vhost_iotlb.h | 45 ++++++++
8 files changed, 304 insertions(+), 181 deletions(-)
create mode 100644 drivers/vhost/vhost_iotlb.c
create mode 100644 include/linux/vhost_iotlb.h
Hi,
Sorry if you have gone over this previously:
Thanks for the review, it's really helpful.
diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
index 3d03ccbd1adc..eef634ff9a6e 100644
--- a/drivers/vhost/Kconfig
+++ b/drivers/vhost/Kconfig
@@ -36,6 +36,7 @@ config VHOST_VSOCK
config VHOST
tristate
+ select VHOST_IOTLB
---help---
This option is selected by any driver which needs to access
the core of vhost.
@@ -54,3 +55,9 @@ config VHOST_CROSS_ENDIAN_LEGACY
adds some overhead, it is disabled by default.
If unsure, say "N".
+
+config VHOST_IOTLB
+ tristate
+ default m
"default m" should not be needed. Just make whatever needs it select it.
Yes, will fix.
Thanks
+ help
+ Generic IOTLB implementation for vhost and vringh.
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