powerpc/64: Use task_stack_page() to initialise paca->kstack (678c668a) · Commits · 戴 / test

Rather than using the thread info use task_stack_page() to initialise paca->kstack, that way it will work with THREAD_INFO_IN_TASK. Signed-off-by:

Nicholas Piggin <npiggin@gmail.com> [mpe: Split out of larger patch] Signed-off-by:

arch/powerpc/kernel/smp.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@
		#include <linux/kernel.h>
		#include <linux/export.h>
		#include <linux/sched/mm.h>
		#include <linux/sched/task_stack.h>
		#include <linux/sched/topology.h>
		#include <linux/smp.h>
		#include <linux/interrupt.h>
		@@ -984,7 +985,8 @@ static void cpu_idle_thread_init(unsigned int cpu, struct task_struct *idle)

		#ifdef CONFIG_PPC64
		paca_ptrs[cpu]->__current = idle;
		paca_ptrs[cpu]->kstack = (unsigned long)ti + THREAD_SIZE - STACK_FRAME_OVERHEAD;
		paca_ptrs[cpu]->kstack = (unsigned long)task_stack_page(idle) +
		THREAD_SIZE - STACK_FRAME_OVERHEAD;
		#endif
		ti->cpu = cpu;
		secondary_ti = current_set[cpu] = ti;