enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/arch/arm64/kernel/kgdb.c
..
..
@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * AArch64 KGDB support
3
4
  *
..
..
@@ -5,18 +6,6 @@
5
6
  *
6
7
  * Copyright (C) 2013 Cavium Inc.
7
8
  * Author: Vijaya Kumar K <vijaya.kumar@caviumnetworks.com>
8
- *
9
- * This program is free software; you can redistribute it and/or modify
10
- * it under the terms of the GNU General Public License version 2 as
11
- * published by the Free Software Foundation.
12
- *
13
- * This program is distributed in the hope that it will be useful,
14
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
- * GNU General Public License for more details.
17
- *
18
- * You should have received a copy of the GNU General Public License
19
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
20
9
  */
21
10
 
22
11
 #include <linux/bug.h>
..
..
@@ -234,6 +223,8 @@
234
223
 		 */
235
224
 		if (!kernel_active_single_step())
236
225
 			kernel_enable_single_step(linux_regs);
226
+		else
227
+			kernel_rewind_single_step(linux_regs);
237
228
 		err = 0;
238
229
 		break;
239
230
 	default:
..
..
@@ -244,9 +235,6 @@
244
235
 
245
236
 static int kgdb_brk_fn(struct pt_regs *regs, unsigned int esr)
246
237
 {
247
-	if (user_mode(regs))
248
-		return DBG_HOOK_ERROR;
249
-
250
238
 	kgdb_handle_exception(1, SIGTRAP, 0, regs);
251
239
 	return DBG_HOOK_HANDLED;
252
240
 }
..
..
@@ -254,9 +242,6 @@
254
242
 
255
243
 static int kgdb_compiled_brk_fn(struct pt_regs *regs, unsigned int esr)
256
244
 {
257
-	if (user_mode(regs))
258
-		return DBG_HOOK_ERROR;
259
-
260
245
 	compiled_break = 1;
261
246
 	kgdb_handle_exception(1, SIGTRAP, 0, regs);
262
247
 
..
..
@@ -266,7 +251,7 @@
266
251
 
267
252
 static int kgdb_step_brk_fn(struct pt_regs *regs, unsigned int esr)
268
253
 {
269
-	if (user_mode(regs) || !kgdb_single_step)
254
+	if (!kgdb_single_step)
270
255
 		return DBG_HOOK_ERROR;
271
256
 
272
257
 	kgdb_handle_exception(0, SIGTRAP, 0, regs);
..
..
@@ -275,32 +260,18 @@
275
260
 NOKPROBE_SYMBOL(kgdb_step_brk_fn);
276
261
 
277
262
 static struct break_hook kgdb_brkpt_hook = {
278
-	.esr_mask	= 0xffffffff,
279
-	.esr_val	= (u32)ESR_ELx_VAL_BRK64(KGDB_DYN_DBG_BRK_IMM),
280
-	.fn		= kgdb_brk_fn
263
+	.fn		= kgdb_brk_fn,
264
+	.imm		= KGDB_DYN_DBG_BRK_IMM,
281
265
 };
282
266
 
283
267
 static struct break_hook kgdb_compiled_brkpt_hook = {
284
-	.esr_mask	= 0xffffffff,
285
-	.esr_val	= (u32)ESR_ELx_VAL_BRK64(KGDB_COMPILED_DBG_BRK_IMM),
286
-	.fn		= kgdb_compiled_brk_fn
268
+	.fn		= kgdb_compiled_brk_fn,
269
+	.imm		= KGDB_COMPILED_DBG_BRK_IMM,
287
270
 };
288
271
 
289
272
 static struct step_hook kgdb_step_hook = {
290
273
 	.fn		= kgdb_step_brk_fn
291
274
 };
292
-
293
-static void kgdb_call_nmi_hook(void *ignored)
294
-{
295
-	kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
296
-}
297
-
298
-void kgdb_roundup_cpus(unsigned long flags)
299
-{
300
-	local_irq_enable();
301
-	smp_call_function(kgdb_call_nmi_hook, NULL, 0);
302
-	local_irq_disable();
303
-}
304
275
 
305
276
 static int __kgdb_notify(struct die_args *args, unsigned long cmd)
306
277
 {
..
..
@@ -344,9 +315,9 @@
344
315
 	if (ret != 0)
345
316
 		return ret;
346
317
 
347
-	register_break_hook(&kgdb_brkpt_hook);
348
-	register_break_hook(&kgdb_compiled_brkpt_hook);
349
-	register_step_hook(&kgdb_step_hook);
318
+	register_kernel_break_hook(&kgdb_brkpt_hook);
319
+	register_kernel_break_hook(&kgdb_compiled_brkpt_hook);
320
+	register_kernel_step_hook(&kgdb_step_hook);
350
321
 	return 0;
351
322
 }
352
323
 
..
..
@@ -357,13 +328,13 @@
357
328
  */
358
329
 void kgdb_arch_exit(void)
359
330
 {
360
-	unregister_break_hook(&kgdb_brkpt_hook);
361
-	unregister_break_hook(&kgdb_compiled_brkpt_hook);
362
-	unregister_step_hook(&kgdb_step_hook);
331
+	unregister_kernel_break_hook(&kgdb_brkpt_hook);
332
+	unregister_kernel_break_hook(&kgdb_compiled_brkpt_hook);
333
+	unregister_kernel_step_hook(&kgdb_step_hook);
363
334
 	unregister_die_notifier(&kgdb_notifier);
364
335
 }
365
336
 
366
-struct kgdb_arch arch_kgdb_ops;
337
+const struct kgdb_arch arch_kgdb_ops;
367
338
 
368
339
 int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
369
340
 {