mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
2f681ba4b3
This selects the THREAD_INFO_IN_TASK option for UM and changes the way that the current task is discovered. This is trivial though, as UML already tracks the current task in cpu_tasks[] and this can be used to retrieve it. Also remove the signal handler code that copies the thread information into the IRQ stack. It is obsolete now, which also means that the mentioned race condition cannot happen anymore. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: Hajime Tazaki <thehajime@gmail.com> Link: https://patch.msgid.link/20241111102910.46512-1-benjamin@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com>
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
|
|
*/
|
|
|
|
#ifndef __START_H__
|
|
#define __START_H__
|
|
|
|
#include <generated/asm-offsets.h>
|
|
|
|
/*
|
|
* Stolen from linux/const.h, which can't be directly included since
|
|
* this is used in userspace code, which has no access to the kernel
|
|
* headers. Changed to be suitable for adding casts to the start,
|
|
* rather than "UL" to the end.
|
|
*/
|
|
|
|
/* Some constant macros are used in both assembler and
|
|
* C code. Therefore we cannot annotate them always with
|
|
* 'UL' and other type specifiers unilaterally. We
|
|
* use the following macros to deal with this.
|
|
*/
|
|
#define STUB_START stub_start
|
|
#define STUB_CODE STUB_START
|
|
#define STUB_DATA (STUB_CODE + UM_KERN_PAGE_SIZE)
|
|
#define STUB_DATA_PAGES 2 /* must be a power of two */
|
|
#define STUB_END (STUB_DATA + STUB_DATA_PAGES * UM_KERN_PAGE_SIZE)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <sysdep/ptrace.h>
|
|
|
|
struct task_struct;
|
|
extern struct task_struct *cpu_tasks[];
|
|
|
|
extern unsigned long long physmem_size;
|
|
|
|
extern unsigned long high_physmem;
|
|
extern unsigned long uml_physmem;
|
|
extern unsigned long uml_reserved;
|
|
extern unsigned long end_vm;
|
|
extern unsigned long start_vm;
|
|
|
|
extern unsigned long brk_start;
|
|
|
|
extern unsigned long host_task_size;
|
|
extern unsigned long stub_start;
|
|
|
|
extern int linux_main(int argc, char **argv, char **envp);
|
|
extern void uml_finishsetup(void);
|
|
|
|
struct siginfo;
|
|
extern void (*sig_info[])(int, struct siginfo *si, struct uml_pt_regs *);
|
|
|
|
#endif
|
|
|
|
#endif
|