patch-2.4.13 linux/arch/s390/mm/extable.c
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- Lines: 52
- Date:
Thu Oct 11 09:04:57 2001
- Orig file:
v2.4.12/linux/arch/s390/mm/extable.c
- Orig date:
Fri May 12 11:41:45 2000
diff -u --recursive --new-file v2.4.12/linux/arch/s390/mm/extable.c linux/arch/s390/mm/extable.c
@@ -10,6 +10,7 @@
#include <linux/config.h>
#include <linux/module.h>
+#include <linux/spinlock.h>
#include <asm/uaccess.h>
extern const struct exception_table_entry __start___ex_table[];
@@ -36,28 +37,37 @@
return 0;
}
+extern spinlock_t modlist_lock;
+
unsigned long
search_exception_table(unsigned long addr)
{
- unsigned long ret;
+ unsigned long ret = 0;
+ unsigned long flags;
#ifndef CONFIG_MODULES
addr &= 0x7fffffff; /* remove amode bit from address */
/* There is only the kernel to search. */
ret = search_one_table(__start___ex_table, __stop___ex_table-1, addr);
- if (ret) return FIX_PSW(ret);
+ if (ret) ret = FIX_PSW(ret);
+ return ret;
#else
/* The kernel is the last "module" -- no need to treat it special. */
struct module *mp;
addr &= 0x7fffffff; /* remove amode bit from address */
+
+ spin_lock_irqsave(&modlist_lock, flags);
for (mp = module_list; mp != NULL; mp = mp->next) {
- if (mp->ex_table_start == NULL)
+ if (mp->ex_table_start == NULL || !(mp->flags&(MOD_RUNNING|MOD_INITIALIZING)))
continue;
ret = search_one_table(mp->ex_table_start,
mp->ex_table_end - 1, addr);
- if (ret) return FIX_PSW(ret);
+ if (ret) {
+ ret = FIX_PSW(ret);
+ break;
+ }
}
+ spin_unlock_irqrestore(&modlist_lock, flags);
+ return ret;
#endif
-
- return 0;
}
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