lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

uml: get rid of do_longjmp

Browse Source 
do_longjmp used to be needed when UML didn't have its own implementation of
setjmp and longjmp.  They came from libc, and couldn't be called directly from
kernel code, as the libc jmp_buf couldn't be imported there.  do_longjmp was a
userspace function which served to provide longjmp access to kernel code.

This is gone, and a number of void * pointers can now be jmp_buf *.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-10-16 01:27:05 -07:00
committed by Linus Torvalds
parent 0a7675aa20
commit fab95c55e3
11 changed files with 16 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/um/include/os.h
View File

@@ -193,7 +193,7 @@ extern int os_getpid(void);
extern int os_getpgrp(void);
extern void init_new_thread_signals(void);
extern int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr);
extern int run_kernel_thread(int (*fn)(void *), void *arg, jmp_buf **jmp_ptr);
extern int os_map_memory(void *virt, int fd, unsigned long long off,
unsigned long len, int r, int w, int x);
@@ -206,7 +206,7 @@ extern void os_flush_stdout(void);
/* uaccess.c */
extern unsigned long __do_user_copy(void *to, const void *from, int n,
void **fault_addr, void **fault_catcher,
void **fault_addr, jmp_buf **fault_catcher,
void (*op)(void *to, const void *from,
int n), int *faulted_out);
@@ -240,7 +240,6 @@ extern int set_signals(int enable);
/* trap.c */
extern void os_fill_handlinfo(struct kern_handlers h);
extern void do_longjmp(void *p, int val);
/* util.c */
extern void stack_protections(unsigned long address);