linux-kernel - [PATCH 2/2] tools: virtio: Fix no definition of dma_map_page

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Message-ID: <20251206032318.19084-1-r4o5m6e8o@163.com>
Date: Sat,  6 Dec 2025 11:23:18 +0800
From: Yufeng Wang <r4o5m6e8o@....com>
To: "Michael S . Tsirkin" <mst@...hat.com>,
	Jason Wang <jasowang@...hat.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
	Eugenio Pérez <eperezma@...hat.com>,
	Yufeng Wang <r4o5m6e8o@....com>
Cc: virtualization@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Yuedong Wang <wyd20130109@....com>
Subject: [PATCH 2/2] tools: virtio: Fix no definition of dma_map_page_attrs

Fix tools/virtio compiler error, port over the definition
of dma_map_page_attrs, dma_unmap_page_attrs, dev_WARN_ONCE

Fixes: 447beec8065b ("virtio_ring: switch to use dma_{map|unmap}_page()")
Signed-off-by: Yufeng Wang <r4o5m6e8o@....com>
Tested-by: Yuedong Wang <wyd20130109@....com>
---
 tools/virtio/linux/dma-mapping.h | 3 +++
 tools/virtio/linux/kernel.h      | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/tools/virtio/linux/dma-mapping.h b/tools/virtio/linux/dma-mapping.h
index 095958461788..de251a1f0c37 100644
--- a/tools/virtio/linux/dma-mapping.h
+++ b/tools/virtio/linux/dma-mapping.h
@@ -22,6 +22,7 @@ enum dma_data_direction {
 #define dma_free_coherent(d, s, p, h) kfree(p)
 
 #define dma_map_page(d, p, o, s, dir) (page_to_phys(p) + (o))
+#define dma_map_page_attrs(d, p, o, s, dir, a) (page_to_phys(p) + (o))
 
 #define dma_map_single(d, p, s, dir) (virt_to_phys(p))
 #define dma_map_single_attrs(d, p, s, dir, a) (virt_to_phys(p))
@@ -29,6 +30,8 @@ enum dma_data_direction {
 
 #define dma_unmap_single(d, a, s, r) do { (void)(d); (void)(a); (void)(s); (void)(r); } while (0)
 #define dma_unmap_page(d, a, s, r) do { (void)(d); (void)(a); (void)(s); (void)(r); } while (0)
+#define dma_unmap_page_attrs(d, a, s, r, t) \
+	do { (void)(d); (void)(a); (void)(s); (void)(r); (void)(t); } while (0)
 
 #define sg_dma_address(sg) (0)
 #define sg_dma_len(sg) (0)
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 6702008f7f5c..88e474f46916 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -134,6 +134,9 @@ static inline void *krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t
 #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 #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, ...) \
+	do { (void)(dev); (void)(condition); \
+	fprintf(stderr, format, ## __VA_ARGS__); } while (0)
 
 #define min(x, y) ({				\
 	typeof(x) _min1 = (x);			\
-- 
2.43.0