From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/arch/um/kernel/um_arch.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 55 insertions(+), 5 deletions(-)
diff --git a/kernel/arch/um/kernel/um_arch.c b/kernel/arch/um/kernel/um_arch.c
index a818cce..ca5383a 100644
--- a/kernel/arch/um/kernel/um_arch.c
+++ b/kernel/arch/um/kernel/um_arch.c
@@ -1,8 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
*/
+#include <linux/cpu.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/mm.h>
@@ -13,8 +14,8 @@
#include <linux/sched.h>
#include <linux/sched/task.h>
#include <linux/kmsg_dump.h>
+#include <linux/suspend.h>
-#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/sections.h>
#include <asm/setup.h>
@@ -53,7 +54,7 @@
};
union thread_union cpu0_irqstack
- __attribute__((__section__(".data..init_irqstack"))) =
+ __section(".data..init_irqstack") =
{ .thread_info = INIT_THREAD_INFO(init_task) };
/* Changed in setup_arch, which is called in early boot */
@@ -77,7 +78,7 @@
static void *c_start(struct seq_file *m, loff_t *pos)
{
- return *pos < NR_CPUS ? cpu_data + *pos : NULL;
+ return *pos < nr_cpu_ids ? cpu_data + *pos : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
@@ -113,6 +114,7 @@
/* Set in uml_mem_setup and modified in linux_main */
long long physmem_size = 32 * 1024 * 1024;
+EXPORT_SYMBOL(physmem_size);
static const char *usage_string =
"User Mode Linux v%s\n"
@@ -352,12 +354,60 @@
setup_hostinfo(host_info, sizeof host_info);
}
-void __init check_bugs(void)
+void __init arch_cpu_finalize_init(void)
{
arch_check_bugs();
os_check_bugs();
}
+void apply_retpolines(s32 *start, s32 *end)
+{
+}
+
+void apply_returns(s32 *start, s32 *end)
+{
+}
+
void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
{
}
+
+void *text_poke(void *addr, const void *opcode, size_t len)
+{
+ /*
+ * In UML, the only reference to this function is in
+ * apply_relocate_add(), which shouldn't ever actually call this
+ * because UML doesn't have live patching.
+ */
+ WARN_ON(1);
+
+ return memcpy(addr, opcode, len);
+}
+
+void text_poke_sync(void)
+{
+}
+
+void uml_pm_wake(void)
+{
+ pm_system_wakeup();
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int init_pm_wake_signal(void)
+{
+ /*
+ * In external time-travel mode we can't use signals to wake up
+ * since that would mess with the scheduling. We'll have to do
+ * some additional work to support wakeup on virtio devices or
+ * similar, perhaps implementing a fake RTC controller that can
+ * trigger wakeup (and request the appropriate scheduling from
+ * the external scheduler when going to suspend.)
+ */
+ if (time_travel_mode != TT_MODE_EXTERNAL)
+ register_pm_wake_signal();
+ return 0;
+}
+
+late_initcall(init_pm_wake_signal);
+#endif
--
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