diff --git "a/source/_posts/dpdk/dpdk_vdpa\347\203\255\350\277\201\347\247\273.md" "b/source/_posts/dpdk/dpdk_vdpa\347\203\255\350\277\201\347\247\273.md"
index e69de29..67ad086 100644
--- "a/source/_posts/dpdk/dpdk_vdpa\347\203\255\350\277\201\347\247\273.md"
+++ "b/source/_posts/dpdk/dpdk_vdpa\347\203\255\350\277\201\347\247\273.md"
@@ -0,0 +1,7 @@
+```c
+static __rte_always_inline void
+vhost_log_page(uint8_t *log_base, uint64_t page)
+{
+	vhost_set_bit(page % 8, &log_base[page / 8]);
+}
+```
\ No newline at end of file