Add dev_WARN_ONCE and is_vmalloc_addr stubs needed by virtio_ring.c.
is_vmalloc_addr stub always returns false - that's fine since it's
merely a sanity check.

Created using Cursor CLI.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 tools/virtio/linux/kernel.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 6702008f7f5c..d7fc70b68a2b 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -14,6 +14,7 @@
 #include <linux/log2.h>
 #include <linux/types.h>
 #include <linux/overflow.h>
+#include <linux/limits.h>
 #include <linux/list.h>
 #include <linux/printk.h>
 #include <linux/bug.h>
@@ -135,6 +136,14 @@ static inline void *krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t
 #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 #define dev_warn_once(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 
+#define dev_WARN_ONCE(dev, condition, format...) \
+	WARN_ONCE(condition, format)
+
+static inline bool is_vmalloc_addr(const void *x)
+{
+	return false;
+}
+
 #define min(x, y) ({				\
 	typeof(x) _min1 = (x);			\
 	typeof(y) _min2 = (y);			\
-- 
MST