mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-04-24 10:49:54 +02:00
Heiko Carstens
8e0b986c59
There shouldn't be any 31 bit code around anymore that matters. Remove the compat layer support required to run 31 bit code. Reason for removal is code simplification and reduced test effort. Note that this comes without any deprecation warnings added to config options, or kernel messages, since most likely those would be ignored anyway. If it turns out there is still a reason to keep the compat layer this can be reverted at any time in the future. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* S390 version
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* Copyright IBM Corp. 2002, 2006
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
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*/
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#ifndef _ASM_THREAD_INFO_H
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#define _ASM_THREAD_INFO_H
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#include <linux/bits.h>
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#include <vdso/page.h>
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/*
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* General size of kernel stacks
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*/
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#if defined(CONFIG_KASAN) || defined(CONFIG_KMSAN)
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#define THREAD_SIZE_ORDER 4
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#else
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#define THREAD_SIZE_ORDER 2
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#endif
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#define BOOT_STACK_SIZE (PAGE_SIZE << 2)
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#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
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#define STACK_INIT_OFFSET (THREAD_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE)
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#ifndef __ASSEMBLER__
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/*
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* low level task data that entry.S needs immediate access to
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* - this struct should fit entirely inside of one cache line
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* - this struct shares the supervisor stack pages
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* - if the contents of this structure are changed, the assembly constants must also be changed
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*/
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struct thread_info {
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unsigned long flags; /* low level flags */
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unsigned long syscall_work; /* SYSCALL_WORK_ flags */
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unsigned int cpu; /* current CPU */
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unsigned char sie; /* running in SIE context */
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};
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/*
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* macros/functions for gaining access to the thread information structure
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*/
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#define INIT_THREAD_INFO(tsk) \
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{ \
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.flags = 0, \
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}
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struct task_struct;
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void arch_setup_new_exec(void);
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#define arch_setup_new_exec arch_setup_new_exec
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#endif
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/*
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* thread information flags bit numbers
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*
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* Tell the generic TIF infrastructure which special bits s390 supports
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*/
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#define HAVE_TIF_NEED_RESCHED_LAZY
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#define HAVE_TIF_RESTORE_SIGMASK
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#include <asm-generic/thread_info_tif.h>
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/* Architecture specific bits */
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#define TIF_ASCE_PRIMARY 16 /* primary asce is kernel asce */
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#define TIF_GUARDED_STORAGE 17 /* load guarded storage control block */
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#define TIF_ISOLATE_BP_GUEST 18 /* Run KVM guests with isolated BP */
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#define TIF_PER_TRAP 19 /* Need to handle PER trap on exit to usermode */
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#define TIF_SINGLE_STEP 21 /* This task is single stepped */
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#define TIF_BLOCK_STEP 22 /* This task is block stepped */
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#define TIF_UPROBE_SINGLESTEP 23 /* This task is uprobe single stepped */
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#define _TIF_ASCE_PRIMARY BIT(TIF_ASCE_PRIMARY)
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#define _TIF_GUARDED_STORAGE BIT(TIF_GUARDED_STORAGE)
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#define _TIF_ISOLATE_BP_GUEST BIT(TIF_ISOLATE_BP_GUEST)
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#define _TIF_PER_TRAP BIT(TIF_PER_TRAP)
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#define _TIF_SINGLE_STEP BIT(TIF_SINGLE_STEP)
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#define _TIF_BLOCK_STEP BIT(TIF_BLOCK_STEP)
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#define _TIF_UPROBE_SINGLESTEP BIT(TIF_UPROBE_SINGLESTEP)
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#endif /* _ASM_THREAD_INFO_H */
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