2016-01-29 12:57, Yuanhan Liu:

Introduce vhost_log_write() helper function to log the dirty pages we
touched. Page size is harded code to 4096 (VHOST_LOG_PAGE), and each
log is presented by 1 bit.

Therefore, vhost_log_write() simply finds the right bit for related
page we are gonna change, and set it to 1. dev->log_base denotes the
start of the dirty page bitmap.

Signed-off-by: Yuanhan Liu <redacted>
Signed-off-by: Victor Kaplansky <redacted>
Tested-by: Pavel Fedin <redacted>

[...]

+static inline void __attribute__((always_inline))
+vhost_log_write(struct virtio_net *dev, uint64_t addr, uint64_t len)

lib/librte_vhost/vhost_rxtx.c:59:1: error: unused function 'vhost_log_write'

I think it's better to squash with the next patch.