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task_stack, x86/cea: Force-inline stack helpers

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Force-inline two stack helpers to fix the following objtool warnings:

  vmlinux.o: warning: objtool: in_task_stack()+0xc: call to task_stack_page() leaves .noinstr.text section
  vmlinux.o: warning: objtool: in_entry_stack()+0x10: call to cpu_entry_stack() leaves .noinstr.text section

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220324183607.31717-2-bp@alien8.de
This commit is contained in:
Borislav Petkov 2022-03-23 20:02:41 +01:00
parent 3123109284
commit e87f4152e5
2 changed files with 2 additions and 2 deletions
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2
arch/x86/include/asm/cpu_entry_area.h
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@ -143,7 +143,7 @@ extern void cea_set_pte(void *cea_vaddr, phys_addr_t pa, pgprot_t flags);
extern struct cpu_entry_area *get_cpu_entry_area(int cpu);
static inline struct entry_stack *cpu_entry_stack(int cpu)
static __always_inline struct entry_stack *cpu_entry_stack(int cpu)
{
return &get_cpu_entry_area(cpu)->entry_stack_page.stack;
}

2
include/linux/sched/task_stack.h
View file

@ -16,7 +16,7 @@
* try_get_task_stack() instead. task_stack_page will return a pointer
* that could get freed out from under you.
*/
static inline void *task_stack_page(const struct task_struct *task)
static __always_inline void *task_stack_page(const struct task_struct *task)
{
return task->stack;
}