42fda66387
This patchset throws out tt mode, which has been non-functional for a while. This is done in phases, interspersed with code cleanups on the affected files. The removal is done as follows: remove all code, config options, and files which depend on CONFIG_MODE_TT get rid of the CHOOSE_MODE macro, which decided whether to call tt-mode or skas-mode code, and replace invocations with their skas portions replace all now-trivial procedures with their skas equivalents There are now a bunch of now-redundant pieces of data structures, including mode-specific pieces of the thread structure, pt_regs, and mm_context. These are all replaced with their skas-specific contents. As part of the ongoing style compliance project, I made a style pass over all files that were changed. There are three such patches, one for each phase, covering the files affected by that phase but no later ones. I noticed that we weren't freeing the LDT state associated with a process when it exited, so that's fixed in one of the later patches. The last patch is a tidying patch which I've had for a while, but which caused inexplicable crashes under tt mode. Since that is no longer a problem, this can now go in. This patch: Start getting rid of tt mode support. This patch throws out CONFIG_MODE_TT and all config options, code, and files which depend on it. CONFIG_MODE_SKAS is gone and everything that depends on it is included unconditionally. The few changed lines are in re-written Kconfig help, lines which needed something skas-related removed from them, and a few more which weren't strictly deletions. 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>
39 lines
766 B
C
39 lines
766 B
C
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/syscall.h>
|
|
#include <asm/ldt.h>
|
|
#include "sysdep/tls.h"
|
|
#include "uml-config.h"
|
|
|
|
/* TLS support - we basically rely on the host's one.*/
|
|
|
|
#ifndef PTRACE_GET_THREAD_AREA
|
|
#define PTRACE_GET_THREAD_AREA 25
|
|
#endif
|
|
|
|
#ifndef PTRACE_SET_THREAD_AREA
|
|
#define PTRACE_SET_THREAD_AREA 26
|
|
#endif
|
|
|
|
int os_set_thread_area(user_desc_t *info, int pid)
|
|
{
|
|
int ret;
|
|
|
|
ret = ptrace(PTRACE_SET_THREAD_AREA, pid, info->entry_number,
|
|
(unsigned long) info);
|
|
if (ret < 0)
|
|
ret = -errno;
|
|
return ret;
|
|
}
|
|
|
|
int os_get_thread_area(user_desc_t *info, int pid)
|
|
{
|
|
int ret;
|
|
|
|
ret = ptrace(PTRACE_GET_THREAD_AREA, pid, info->entry_number,
|
|
(unsigned long) info);
|
|
if (ret < 0)
|
|
ret = -errno;
|
|
return ret;
|
|
}
|