Shunsuke Mie
2023-Apr-11 08:51 UTC
[PATCH v3 1/2] virtio_ring: add a struct device forward declaration
The virtio_ring header file uses the struct device without a forward
declaration.
Signed-off-by: Shunsuke Mie <mie at igel.co.jp>
---
Changes from v2:
- Fix a typo of commit title
include/linux/virtio_ring.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index 8b95b69ef694..77a9c2f52919 100644
--- a/include/linux/virtio_ring.h
+++ b/include/linux/virtio_ring.h
@@ -58,6 +58,7 @@ do { \
struct virtio_device;
struct virtqueue;
+struct device;
/*
* Creates a virtqueue and allocates the descriptor ring. If
--
2.25.1
Shunsuke Mie
2023-Apr-11 08:51 UTC
[PATCH v3 2/2] tools/virtio: fix build caused by virtio_ring changes
Fix the build dependency for virtio_test. The virtio_ring that is used from
the test requires container_of_const(). Change to use container_of.h kernel
header directly and adapt related codes.
Signed-off-by: Shunsuke Mie <mie at igel.co.jp>
---
Changes from v2:
- Remove an unnecessary change
- Correct indentations
- Retrieve the __user definition to prevent any unintended side effects
tools/include/linux/types.h | 5 +++++
tools/virtio/linux/compiler.h | 2 ++
tools/virtio/linux/kernel.h | 5 +----
tools/virtio/linux/uaccess.h | 11 ++---------
4 files changed, 10 insertions(+), 13 deletions(-)
diff --git a/tools/include/linux/types.h b/tools/include/linux/types.h
index 051fdeaf2670..8519386acd23 100644
--- a/tools/include/linux/types.h
+++ b/tools/include/linux/types.h
@@ -49,7 +49,12 @@ typedef __s8 s8;
#endif
#define __force
+/* This is defined in linux/compiler_types.h and is left for backward
+ * compatibility.
+ */
+#ifndef __user
#define __user
+#endif
#define __must_check
#define __cold
diff --git a/tools/virtio/linux/compiler.h b/tools/virtio/linux/compiler.h
index 2c51bccb97bb..1f3a15b954b9 100644
--- a/tools/virtio/linux/compiler.h
+++ b/tools/virtio/linux/compiler.h
@@ -2,6 +2,8 @@
#ifndef LINUX_COMPILER_H
#define LINUX_COMPILER_H
+#include "../../../include/linux/compiler_types.h"
+
#define WRITE_ONCE(var, val) \
(*((volatile typeof(val) *)(&(var))) = (val))
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 8b877167933d..6702008f7f5c 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 "../../../include/linux/container_of.h"
#include <linux/log2.h>
#include <linux/types.h>
#include <linux/overflow.h>
@@ -107,10 +108,6 @@ static inline void free_page(unsigned long addr)
free((void *)addr);
}
-#define container_of(ptr, type, member) ({ \
- const typeof( ((type *)0)->member ) *__mptr = (ptr); \
- (type *)( (char *)__mptr - offsetof(type,member) );})
-
# ifndef likely
# define likely(x) (__builtin_expect(!!(x), 1))
# endif
diff --git a/tools/virtio/linux/uaccess.h b/tools/virtio/linux/uaccess.h
index 991dfb263998..f13828e0c409 100644
--- a/tools/virtio/linux/uaccess.h
+++ b/tools/virtio/linux/uaccess.h
@@ -6,15 +6,10 @@
extern void *__user_addr_min, *__user_addr_max;
-static inline void __chk_user_ptr(const volatile void *p, size_t size)
-{
- assert(p >= __user_addr_min && p + size <= __user_addr_max);
-}
-
#define put_user(x, ptr) \
({ \
typeof(ptr) __pu_ptr = (ptr); \
- __chk_user_ptr(__pu_ptr, sizeof(*__pu_ptr)); \
+ __chk_user_ptr(__pu_ptr); \
WRITE_ONCE(*(__pu_ptr), x); \
0; \
})
@@ -22,7 +17,7 @@ static inline void __chk_user_ptr(const volatile void *p,
size_t size)
#define get_user(x, ptr) \
({ \
typeof(ptr) __pu_ptr = (ptr); \
- __chk_user_ptr(__pu_ptr, sizeof(*__pu_ptr)); \
+ __chk_user_ptr(__pu_ptr); \
x = READ_ONCE(*(__pu_ptr)); \
0; \
})
@@ -37,7 +32,6 @@ static void volatile_memcpy(volatile char *to, const volatile
char *from,
static inline int copy_from_user(void *to, const void __user volatile *from,
unsigned long n)
{
- __chk_user_ptr(from, n);
volatile_memcpy(to, from, n);
return 0;
}
@@ -45,7 +39,6 @@ static inline int copy_from_user(void *to, const void __user
volatile *from,
static inline int copy_to_user(void __user volatile *to, const void *from,
unsigned long n)
{
- __chk_user_ptr(to, n);
volatile_memcpy(to, from, n);
return 0;
}
--
2.25.1