cf5c95db57
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQF8BAABCgBmBQJTdT+DXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ5Q0QyQTBEQTZBRDhGNzMzMDE3NUUyQkJD MjM3MjA3RTk1NzRGQTdEAAoJEMI3IH6VdPp9jL8H/3kzXh+5rZycb5r48E6Cic/a Gl0NmRjGtbsxLZcvd8NR3cDol1c9mEAelFrwSA3ar0W91hDf9gsEgxYSBcGKfX/b sxqzhFoArMDitvu8QQ38SMIlXaGokW3sevj4B93ljw9DqhFR/BvJctmVfyNuPLpp fFZh0JRyHnkMkXKMJKtYyiXRgfGiJ90rGHPRZLJW7zCIk0/oYd4LESpnqWC+cGKg w8WIe0Vu4CsiQffkWRmMMJmcJIVayJXAtMHOyBNCKMnYziZSqs+JIUwhbPCxci51 vTxWOFs/CAeZp8mrlHR2TD3dHtzP8c/NSL7E3k4QA0tYReA8T3XHwhRmqtHCp7E= =sllM -----END PGP SIGNATURE----- Merge tag 'for-3.16' of git://git.linaro.org/people/ard.biesheuvel/linux-arm into upstream FPSIMD register bank context switching and crypto algorithms optimisations for arm64 from Ard Biesheuvel. * tag 'for-3.16' of git://git.linaro.org/people/ard.biesheuvel/linux-arm: arm64/crypto: AES-ECB/CBC/CTR/XTS using ARMv8 NEON and Crypto Extensions arm64: pull in <asm/simd.h> from asm-generic arm64/crypto: AES in CCM mode using ARMv8 Crypto Extensions arm64/crypto: AES using ARMv8 Crypto Extensions arm64/crypto: GHASH secure hash using ARMv8 Crypto Extensions arm64/crypto: SHA-224/SHA-256 using ARMv8 Crypto Extensions arm64/crypto: SHA-1 using ARMv8 Crypto Extensions arm64: add support for kernel mode NEON in interrupt context arm64: defer reloading a task's FPSIMD state to userland resume arm64: add abstractions for FPSIMD state manipulation asm-generic: allow generic unaligned access if the arch supports it Conflicts: arch/arm64/include/asm/thread_info.h
137 lines
4.2 KiB
C
137 lines
4.2 KiB
C
/*
|
|
* Based on arch/arm/include/asm/thread_info.h
|
|
*
|
|
* Copyright (C) 2002 Russell King.
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef __ASM_THREAD_INFO_H
|
|
#define __ASM_THREAD_INFO_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/compiler.h>
|
|
|
|
#ifndef CONFIG_ARM64_64K_PAGES
|
|
#define THREAD_SIZE_ORDER 2
|
|
#endif
|
|
|
|
#define THREAD_SIZE 16384
|
|
#define THREAD_START_SP (THREAD_SIZE - 16)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
struct task_struct;
|
|
struct exec_domain;
|
|
|
|
#include <asm/types.h>
|
|
|
|
typedef unsigned long mm_segment_t;
|
|
|
|
/*
|
|
* low level task data that entry.S needs immediate access to.
|
|
* __switch_to() assumes cpu_context follows immediately after cpu_domain.
|
|
*/
|
|
struct thread_info {
|
|
unsigned long flags; /* low level flags */
|
|
mm_segment_t addr_limit; /* address limit */
|
|
struct task_struct *task; /* main task structure */
|
|
struct exec_domain *exec_domain; /* execution domain */
|
|
struct restart_block restart_block;
|
|
int preempt_count; /* 0 => preemptable, <0 => bug */
|
|
int cpu; /* cpu */
|
|
};
|
|
|
|
#define INIT_THREAD_INFO(tsk) \
|
|
{ \
|
|
.task = &tsk, \
|
|
.exec_domain = &default_exec_domain, \
|
|
.flags = 0, \
|
|
.preempt_count = INIT_PREEMPT_COUNT, \
|
|
.addr_limit = KERNEL_DS, \
|
|
.restart_block = { \
|
|
.fn = do_no_restart_syscall, \
|
|
}, \
|
|
}
|
|
|
|
#define init_thread_info (init_thread_union.thread_info)
|
|
#define init_stack (init_thread_union.stack)
|
|
|
|
/*
|
|
* how to get the thread information struct from C
|
|
*/
|
|
static inline struct thread_info *current_thread_info(void) __attribute_const__;
|
|
|
|
static inline struct thread_info *current_thread_info(void)
|
|
{
|
|
register unsigned long sp asm ("sp");
|
|
return (struct thread_info *)(sp & ~(THREAD_SIZE - 1));
|
|
}
|
|
|
|
#define thread_saved_pc(tsk) \
|
|
((unsigned long)(tsk->thread.cpu_context.pc))
|
|
#define thread_saved_sp(tsk) \
|
|
((unsigned long)(tsk->thread.cpu_context.sp))
|
|
#define thread_saved_fp(tsk) \
|
|
((unsigned long)(tsk->thread.cpu_context.fp))
|
|
|
|
#endif
|
|
|
|
/*
|
|
* thread information flags:
|
|
* TIF_SYSCALL_TRACE - syscall trace active
|
|
* TIF_SYSCALL_TRACEPOINT - syscall tracepoint for ftrace
|
|
* TIF_SYSCALL_AUDIT - syscall auditing
|
|
* TIF_SECOMP - syscall secure computing
|
|
* TIF_SIGPENDING - signal pending
|
|
* TIF_NEED_RESCHED - rescheduling necessary
|
|
* TIF_NOTIFY_RESUME - callback before returning to user
|
|
* TIF_USEDFPU - FPU was used by this task this quantum (SMP)
|
|
* TIF_POLLING_NRFLAG - true if poll_idle() is polling TIF_NEED_RESCHED
|
|
*/
|
|
#define TIF_SIGPENDING 0
|
|
#define TIF_NEED_RESCHED 1
|
|
#define TIF_NOTIFY_RESUME 2 /* callback before returning to user */
|
|
#define TIF_FOREIGN_FPSTATE 3 /* CPU's FP state is not current's */
|
|
#define TIF_SYSCALL_TRACE 8
|
|
#define TIF_SYSCALL_AUDIT 9
|
|
#define TIF_SYSCALL_TRACEPOINT 10
|
|
#define TIF_SECCOMP 11
|
|
#define TIF_POLLING_NRFLAG 16
|
|
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
|
|
#define TIF_FREEZE 19
|
|
#define TIF_RESTORE_SIGMASK 20
|
|
#define TIF_SINGLESTEP 21
|
|
#define TIF_32BIT 22 /* 32bit process */
|
|
#define TIF_SWITCH_MM 23 /* deferred switch_mm */
|
|
|
|
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
|
|
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
|
|
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
|
|
#define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE)
|
|
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
|
|
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
|
|
#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
|
|
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
|
|
#define _TIF_32BIT (1 << TIF_32BIT)
|
|
|
|
#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
|
|
_TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE)
|
|
|
|
#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
|
|
_TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __ASM_THREAD_INFO_H */
|