[ARM] 5389/1: Make sure the pmd entries are visible by the secondary CPU (e9fc7823) · Commits · 戴 / test

The __cpu_up() function in arch/arm/kernel/smp.c sets the pmd entries without flushing or cleaning them. Signed-off-by:

arch/arm/kernel/smp.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
		pmd = pmd_offset(pgd + pgd_index(PHYS_OFFSET), PHYS_OFFSET);
		*pmd = __pmd((PHYS_OFFSET & PGDIR_MASK) \|
		PMD_TYPE_SECT \| PMD_SECT_AP_WRITE);
		flush_pmd_entry(pmd);

		/*
		* We need to tell the secondary core where to find
		@@ -130,6 +131,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
		secondary_data.pgdir = 0;

		*pmd = __pmd(0);
		clean_pmd_entry(pmd);
		pgd_free(&init_mm, pgd);

		if (ret) {