| /* SPDX-License-Identifier: GPL-2.0 */ | |
| #ifndef ARCH_S390_ENTRY_COMMON_H | |
| #define ARCH_S390_ENTRY_COMMON_H | |
| #include <linux/sched.h> | |
| #include <linux/audit.h> | |
| #include <linux/randomize_kstack.h> | |
| #include <linux/processor.h> | |
| #include <linux/uaccess.h> | |
| #include <asm/timex.h> | |
| #include <asm/fpu.h> | |
| #include <asm/pai.h> | |
| #define ARCH_EXIT_TO_USER_MODE_WORK (_TIF_GUARDED_STORAGE | _TIF_PER_TRAP) | |
| void do_per_trap(struct pt_regs *regs); | |
| static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs) | |
| { | |
| if (IS_ENABLED(CONFIG_DEBUG_ENTRY)) | |
| debug_user_asce(0); | |
| pai_kernel_enter(regs); | |
| } | |
| #define arch_enter_from_user_mode arch_enter_from_user_mode | |
| static __always_inline void arch_exit_to_user_mode_work(struct pt_regs *regs, | |
| unsigned long ti_work) | |
| { | |
| if (ti_work & _TIF_PER_TRAP) { | |
| clear_thread_flag(TIF_PER_TRAP); | |
| do_per_trap(regs); | |
| } | |
| if (ti_work & _TIF_GUARDED_STORAGE) | |
| gs_load_bc_cb(regs); | |
| } | |
| #define arch_exit_to_user_mode_work arch_exit_to_user_mode_work | |
| static __always_inline void arch_exit_to_user_mode(void) | |
| { | |
| load_user_fpu_regs(); | |
| if (IS_ENABLED(CONFIG_DEBUG_ENTRY)) | |
| debug_user_asce(1); | |
| pai_kernel_exit(current_pt_regs()); | |
| } | |
| #define arch_exit_to_user_mode arch_exit_to_user_mode | |
| static __always_inline bool arch_in_rcu_eqs(void) | |
| { | |
| if (IS_ENABLED(CONFIG_KVM)) | |
| return current->flags & PF_VCPU; | |
| return false; | |
| } | |
| #define arch_in_rcu_eqs arch_in_rcu_eqs | |
| #endif |