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authorAl Viro <viro@zeniv.linux.org.uk>2016-01-04 18:25:34 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2016-01-04 18:25:34 +0300
commit7e935c7ca1e6c398f11edac5beabfc4348e3b3a4 (patch)
tree86da864ba6341bd86b5f5450c611f918722237b2 /tools/virtio
parentc62432b40b5e03c25faf2c8f8547bba4908b8945 (diff)
parente9d408e107db9a554b36c3a79f67b37dd3e16da0 (diff)
downloadlinux-7e935c7ca1e6c398f11edac5beabfc4348e3b3a4.tar.xz
Merge branch 'memdup_user_nul' into work.misc
Diffstat (limited to 'tools/virtio')
-rw-r--r--tools/virtio/linux/kernel.h6
-rw-r--r--tools/virtio/linux/virtio.h6
-rw-r--r--tools/virtio/linux/virtio_config.h20
3 files changed, 19 insertions, 13 deletions
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 0a3da64638ce..4db7d5691ba7 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -110,4 +110,10 @@ static inline void free_page(unsigned long addr)
(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
+/* TODO: empty stubs for now. Broken but enough for virtio_ring.c */
+#define list_add_tail(a, b) do {} while (0)
+#define list_del(a) do {} while (0)
+#define list_for_each_entry(a, b, c) while (0)
+/* end of stubs */
+
#endif /* KERNEL_H */
diff --git a/tools/virtio/linux/virtio.h b/tools/virtio/linux/virtio.h
index a3e07016a440..ee125e714053 100644
--- a/tools/virtio/linux/virtio.h
+++ b/tools/virtio/linux/virtio.h
@@ -3,12 +3,6 @@
#include <linux/scatterlist.h>
#include <linux/kernel.h>
-/* TODO: empty stubs for now. Broken but enough for virtio_ring.c */
-#define list_add_tail(a, b) do {} while (0)
-#define list_del(a) do {} while (0)
-#define list_for_each_entry(a, b, c) while (0)
-/* end of stubs */
-
struct virtio_device {
void *dev;
u64 features;
diff --git a/tools/virtio/linux/virtio_config.h b/tools/virtio/linux/virtio_config.h
index 806d683ab107..57a6964a1e35 100644
--- a/tools/virtio/linux/virtio_config.h
+++ b/tools/virtio/linux/virtio_config.h
@@ -40,33 +40,39 @@ static inline void __virtio_clear_bit(struct virtio_device *vdev,
#define virtio_has_feature(dev, feature) \
(__virtio_test_bit((dev), feature))
+static inline bool virtio_is_little_endian(struct virtio_device *vdev)
+{
+ return virtio_has_feature(vdev, VIRTIO_F_VERSION_1) ||
+ virtio_legacy_is_little_endian();
+}
+
+/* Memory accessors */
static inline u16 virtio16_to_cpu(struct virtio_device *vdev, __virtio16 val)
{
- return __virtio16_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
+ return __virtio16_to_cpu(virtio_is_little_endian(vdev), val);
}
static inline __virtio16 cpu_to_virtio16(struct virtio_device *vdev, u16 val)
{
- return __cpu_to_virtio16(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
+ return __cpu_to_virtio16(virtio_is_little_endian(vdev), val);
}
static inline u32 virtio32_to_cpu(struct virtio_device *vdev, __virtio32 val)
{
- return __virtio32_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
+ return __virtio32_to_cpu(virtio_is_little_endian(vdev), val);
}
static inline __virtio32 cpu_to_virtio32(struct virtio_device *vdev, u32 val)
{
- return __cpu_to_virtio32(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
+ return __cpu_to_virtio32(virtio_is_little_endian(vdev), val);
}
static inline u64 virtio64_to_cpu(struct virtio_device *vdev, __virtio64 val)
{
- return __virtio64_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
+ return __virtio64_to_cpu(virtio_is_little_endian(vdev), val);
}
static inline __virtio64 cpu_to_virtio64(struct virtio_device *vdev, u64 val)
{
- return __cpu_to_virtio64(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
+ return __cpu_to_virtio64(virtio_is_little_endian(vdev), val);
}
-