On Wed, Dec 21, 2022 at 04:55:06PM +0900, Shunsuke Mie wrote:
Fix the build caused by missing kmsan_handle_dma() and is_power_of_2() that
are used in drivers/virtio/virtio_ring.c.
Signed-off-by: Shunsuke Mie <mie@xxxxxxxxxx>
---
tools/virtio/linux/cpumask.h | 7 +++++++
tools/virtio/linux/gfp.h | 7 +++++++
tools/virtio/linux/kernel.h | 1 +
tools/virtio/linux/kmsan.h | 12 ++++++++++++
tools/virtio/linux/log2.h | 11 +++++++++++
tools/virtio/linux/topology.h | 7 +++++++
6 files changed, 45 insertions(+)
create mode 100644 tools/virtio/linux/cpumask.h
create mode 100644 tools/virtio/linux/gfp.h
create mode 100644 tools/virtio/linux/kmsan.h
create mode 100644 tools/virtio/linux/log2.h
create mode 100644 tools/virtio/linux/topology.h
diff --git a/tools/virtio/linux/cpumask.h b/tools/virtio/linux/cpumask.h
new file mode 100644
index 000000000000..307da69d6b26
--- /dev/null
+++ b/tools/virtio/linux/cpumask.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_CPUMASK_H
+#define _LINUX_CPUMASK_H
+
+#include <linux/kernel.h>
+
+#endif /* _LINUX_CPUMASK_H */
diff --git a/tools/virtio/linux/gfp.h b/tools/virtio/linux/gfp.h
new file mode 100644
index 000000000000..43d146f236f1
--- /dev/null
+++ b/tools/virtio/linux/gfp.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_GFP_H
+#define __LINUX_GFP_H
+
+#include <linux/topology.h>
+
+#endif
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 21593bf97755..8b877167933d 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -10,6 +10,7 @@
#include <stdarg.h>
#include <linux/compiler.h>
+#include <linux/log2.h>
#include <linux/types.h>
#include <linux/overflow.h>
#include <linux/list.h>
diff --git a/tools/virtio/linux/kmsan.h b/tools/virtio/linux/kmsan.h
new file mode 100644
index 000000000000..272b5aa285d5
--- /dev/null
+++ b/tools/virtio/linux/kmsan.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_KMSAN_H
+#define _LINUX_KMSAN_H
+
+#include <linux/gfp.h>
+
+inline void kmsan_handle_dma(struct page *page, size_t offset, size_t size,
+ enum dma_data_direction dir)
+{
+}
+
+#endif /* _LINUX_KMSAN_H */
diff --git a/tools/virtio/linux/log2.h b/tools/virtio/linux/log2.h
new file mode 100644
index 000000000000..aa67bb21d8e2
--- /dev/null
+++ b/tools/virtio/linux/log2.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _LINUX_LOG2_H
+#define _LINUX_LOG2_H
+
+inline bool is_power_of_2(unsigned long n)
+{
+ return true;
+}
is_power_of_2 seems defined in tools/include/linux/log2.h so
`#include <linux/log2.h>` in tools/virtio/linux/kernel.h should be
enough.
If that's not the case, however, I think we should return true here only
if n is really power of 2.
Thanks,
Stefano
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