Author: hselasky
Date: Fri Nov 13 09:00:39 2015
New Revision: 290744
URL: https://svnweb.freebsd.org/changeset/base/290744
Log:
Add assert and note about the size of "unsigned long" inside the
LinuxKPI for the future.
Sponsored by: Mellanox Technologies
Modified:
head/sys/compat/linuxkpi/common/src/linux_compat.c
Modified: head/sys/compat/linuxkpi/common/src/linux_compat.c
==============================================================================
--- head/sys/compat/linuxkpi/common/src/linux_compat.c Fri Nov 13 06:20:27
2015 (r290743)
+++ head/sys/compat/linuxkpi/common/src/linux_compat.c Fri Nov 13 09:00:39
2015 (r290744)
@@ -950,3 +950,11 @@ linux_compat_uninit(void *arg)
kobject_kfree_name(&miscclass.kobj);
}
SYSUNINIT(linux_compat, SI_SUB_DRIVERS, SI_ORDER_SECOND, linux_compat_uninit,
NULL);
+
+/*
+ * NOTE: Linux frequently uses "unsigned long" for pointer to integer
+ * conversion and vice versa, where in FreeBSD "uintptr_t" would be
+ * used. Assert these types have the same size, else some parts of the
+ * LinuxKPI may not work like expected:
+ */
+CTASSERT(sizeof(unsigned long) == sizeof(uintptr_t));
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