修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/arch/um/kernel/um_arch.c
..
..
@@ -1,8 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0
1
2
 /*
2
3
  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3
- * Licensed under the GPL
4
4
  */
5
5
 
6
+#include <linux/cpu.h>
6
7
 #include <linux/delay.h>
7
8
 #include <linux/init.h>
8
9
 #include <linux/mm.h>
..
..
@@ -13,8 +14,8 @@
13
14
 #include <linux/sched.h>
14
15
 #include <linux/sched/task.h>
15
16
 #include <linux/kmsg_dump.h>
17
+#include <linux/suspend.h>
16
18
 
17
-#include <asm/pgtable.h>
18
19
 #include <asm/processor.h>
19
20
 #include <asm/sections.h>
20
21
 #include <asm/setup.h>
..
..
@@ -53,7 +54,7 @@
53
54
 };
54
55
 
55
56
 union thread_union cpu0_irqstack
56
-	__attribute__((__section__(".data..init_irqstack"))) =
57
+	__section(".data..init_irqstack") =
57
58
 		{ .thread_info = INIT_THREAD_INFO(init_task) };
58
59
 
59
60
 /* Changed in setup_arch, which is called in early boot */
..
..
@@ -77,7 +78,7 @@
77
78
 
78
79
 static void *c_start(struct seq_file *m, loff_t *pos)
79
80
 {
80
-	return *pos < NR_CPUS ? cpu_data + *pos : NULL;
81
+	return *pos < nr_cpu_ids ? cpu_data + *pos : NULL;
81
82
 }
82
83
 
83
84
 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
..
..
@@ -113,6 +114,7 @@
113
114
 
114
115
 /* Set in uml_mem_setup and modified in linux_main */
115
116
 long long physmem_size = 32 * 1024 * 1024;
117
+EXPORT_SYMBOL(physmem_size);
116
118
 
117
119
 static const char *usage_string =
118
120
 "User Mode Linux v%s\n"
..
..
@@ -352,12 +354,60 @@
352
354
 	setup_hostinfo(host_info, sizeof host_info);
353
355
 }
354
356
 
355
-void __init check_bugs(void)
357
+void __init arch_cpu_finalize_init(void)
356
358
 {
357
359
 	arch_check_bugs();
358
360
 	os_check_bugs();
359
361
 }
360
362
 
363
+void apply_retpolines(s32 *start, s32 *end)
364
+{
365
+}
366
+
367
+void apply_returns(s32 *start, s32 *end)
368
+{
369
+}
370
+
361
371
 void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
362
372
 {
363
373
 }
374
+
375
+void *text_poke(void *addr, const void *opcode, size_t len)
376
+{
377
+	/*
378
+	 * In UML, the only reference to this function is in
379
+	 * apply_relocate_add(), which shouldn't ever actually call this
380
+	 * because UML doesn't have live patching.
381
+	 */
382
+	WARN_ON(1);
383
+
384
+	return memcpy(addr, opcode, len);
385
+}
386
+
387
+void text_poke_sync(void)
388
+{
389
+}
390
+
391
+void uml_pm_wake(void)
392
+{
393
+	pm_system_wakeup();
394
+}
395
+
396
+#ifdef CONFIG_PM_SLEEP
397
+static int init_pm_wake_signal(void)
398
+{
399
+	/*
400
+	 * In external time-travel mode we can't use signals to wake up
401
+	 * since that would mess with the scheduling. We'll have to do
402
+	 * some additional work to support wakeup on virtio devices or
403
+	 * similar, perhaps implementing a fake RTC controller that can
404
+	 * trigger wakeup (and request the appropriate scheduling from
405
+	 * the external scheduler when going to suspend.)
406
+	 */
407
+	if (time_travel_mode != TT_MODE_EXTERNAL)
408
+		register_pm_wake_signal();
409
+	return 0;
410
+}
411
+
412
+late_initcall(init_pm_wake_signal);
413
+#endif