From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/arch/x86/include/asm/switch_to.h | 35 +++++++++++------------------------
1 files changed, 11 insertions(+), 24 deletions(-)
diff --git a/kernel/arch/x86/include/asm/switch_to.h b/kernel/arch/x86/include/asm/switch_to.h
index 157149d..9f69cc4 100644
--- a/kernel/arch/x86/include/asm/switch_to.h
+++ b/kernel/arch/x86/include/asm/switch_to.h
@@ -12,27 +12,6 @@
__visible struct task_struct *__switch_to(struct task_struct *prev,
struct task_struct *next);
-/* This runs runs on the previous thread's stack. */
-static inline void prepare_switch_to(struct task_struct *next)
-{
-#ifdef CONFIG_VMAP_STACK
- /*
- * If we switch to a stack that has a top-level paging entry
- * that is not present in the current mm, the resulting #PF will
- * will be promoted to a double-fault and we'll panic. Probe
- * the new stack now so that vmalloc_fault can fix up the page
- * tables if needed. This can only happen if we use a stack
- * in vmap space.
- *
- * We assume that the stack is aligned so that it never spans
- * more than one top-level paging entry.
- *
- * To minimize cache pollution, just follow the stack pointer.
- */
- READ_ONCE(*(unsigned char *)next->thread.sp);
-#endif
-}
-
asmlinkage void ret_from_fork(void);
/*
@@ -40,13 +19,13 @@
* order of the fields must match the code in __switch_to_asm().
*/
struct inactive_task_frame {
- unsigned long flags;
#ifdef CONFIG_X86_64
unsigned long r15;
unsigned long r14;
unsigned long r13;
unsigned long r12;
#else
+ unsigned long flags;
unsigned long si;
unsigned long di;
#endif
@@ -67,8 +46,6 @@
#define switch_to(prev, next, last) \
do { \
- prepare_switch_to(next); \
- \
((last) = __switch_to_asm((prev), (next))); \
} while (0)
@@ -103,7 +80,17 @@
if (static_cpu_has(X86_FEATURE_XENPV))
load_sp0(task_top_of_stack(task));
#endif
+}
+static inline void kthread_frame_init(struct inactive_task_frame *frame,
+ unsigned long fun, unsigned long arg)
+{
+ frame->bx = fun;
+#ifdef CONFIG_X86_32
+ frame->di = arg;
+#else
+ frame->r12 = arg;
+#endif
}
#endif /* _ASM_X86_SWITCH_TO_H */
--
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