Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * This file handles the architecture dependent parts of process handling.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *    Copyright IBM Corp. 1999, 2009
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *		 Hartmut Penner <hp@de.ibm.com>,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *		 Denis Joseph Barrow,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/elf-randomize.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/sched/debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/sched/task.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/sched/task_stack.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/elfcore.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/tick.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/personality.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/kprobes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <linux/init_task.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <asm/cpu_mf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <asm/processor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include <asm/vtimer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #include <asm/exec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #include <asm/nmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #include <asm/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #include <asm/stacktrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #include <asm/switch_to.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #include <asm/runtime_instr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #include <asm/unwind.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #include "entry.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) asmlinkage void ret_from_fork(void) asm ("ret_from_fork");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) extern void kernel_thread_starter(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) void flush_thread(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) void arch_setup_new_exec(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	if (S390_lowcore.current_pid != current->pid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		S390_lowcore.current_pid = current->pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		if (test_facility(40))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 			lpp(&S390_lowcore.lpp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) void arch_release_task_struct(struct task_struct *tsk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	runtime_instr_release(tsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	guarded_storage_release(tsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	 * Save the floating-point or vector register state of the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	 * task and set the CIF_FPU flag to lazy restore the FPU register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	 * state when returning to user space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	save_fpu_regs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	memcpy(dst, src, arch_task_struct_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	dst->thread.fpu.regs = dst->thread.fpu.fprs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		unsigned long arg, struct task_struct *p, unsigned long tls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	struct fake_frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		struct stack_frame sf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		struct pt_regs childregs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	} *frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	frame = container_of(task_pt_regs(p), struct fake_frame, childregs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	p->thread.ksp = (unsigned long) frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	/* Save access registers to new thread structure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	save_access_regs(&p->thread.acrs[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	/* start new process with ar4 pointing to the correct address space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	p->thread.mm_segment = get_fs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	/* Don't copy debug registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	memset(&p->thread.per_user, 0, sizeof(p->thread.per_user));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	memset(&p->thread.per_event, 0, sizeof(p->thread.per_event));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	clear_tsk_thread_flag(p, TIF_SINGLE_STEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	p->thread.per_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	/* Initialize per thread user and system timer values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	p->thread.user_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	p->thread.guest_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	p->thread.system_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	p->thread.hardirq_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	p->thread.softirq_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	p->thread.last_break = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	frame->sf.back_chain = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	/* new return point is ret_from_fork */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	frame->sf.gprs[8] = (unsigned long) ret_from_fork;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	/* fake return stack for resume(), don't go back to schedule */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	frame->sf.gprs[9] = (unsigned long) frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	/* Store access registers to kernel stack of new process. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	if (unlikely(p->flags & PF_KTHREAD)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		/* kernel thread */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		memset(&frame->childregs, 0, sizeof(struct pt_regs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		frame->childregs.psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 				PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		frame->childregs.psw.addr =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 				(unsigned long) kernel_thread_starter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		frame->childregs.gprs[9] = new_stackp; /* function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		frame->childregs.gprs[10] = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		frame->childregs.gprs[11] = (unsigned long) do_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		frame->childregs.orig_gpr2 = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	frame->childregs = *current_pt_regs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	frame->childregs.gprs[2] = 0;	/* child returns 0 on fork. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	frame->childregs.flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	if (new_stackp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		frame->childregs.gprs[15] = new_stackp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	/* Don't copy runtime instrumentation info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	p->thread.ri_cb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	frame->childregs.psw.mask &= ~PSW_MASK_RI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	/* Don't copy guarded storage control block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	p->thread.gs_cb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	p->thread.gs_bc_cb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	/* Set a new TLS ?  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	if (clone_flags & CLONE_SETTLS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		if (is_compat_task()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 			p->thread.acrs[0] = (unsigned int)tls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			p->thread.acrs[0] = (unsigned int)(tls >> 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 			p->thread.acrs[1] = (unsigned int)tls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) asmlinkage void execve_tail(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	current->thread.fpu.fpc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	asm volatile("sfpc %0" : : "d" (0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) unsigned long get_wchan(struct task_struct *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	struct unwind_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	unsigned long ip = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	if (!p || p == current || p->state == TASK_RUNNING || !task_stack_page(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (!try_get_task_stack(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	unwind_for_each_frame(&state, p, NULL, 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		if (state.stack_info.type != STACK_TYPE_TASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			ip = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		ip = unwind_get_return_address(&state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		if (!ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		if (!in_sched_functions(ip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	put_task_stack(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	return ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) unsigned long arch_align_stack(unsigned long sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		sp -= get_random_int() & ~PAGE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	return sp & ~0xf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static inline unsigned long brk_rnd(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	return (get_random_int() & BRK_RND_MASK) << PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) unsigned long arch_randomize_brk(struct mm_struct *mm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	unsigned long ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	ret = PAGE_ALIGN(mm->brk + brk_rnd());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return (ret > mm->brk) ? ret : mm->brk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) void set_fs_fixup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	struct pt_regs *regs = current_pt_regs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	static bool warned;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	set_fs(USER_DS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (warned)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	WARN(1, "Unbalanced set_fs - int code: 0x%x\n", regs->int_code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	show_registers(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	warned = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }