enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/arch/powerpc/include/asm/pte-walk.h
..
..
@@ -10,8 +10,20 @@
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 static inline pte_t *find_linux_pte(pgd_t *pgdir, unsigned long ea,
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 				    bool *is_thp, unsigned *hshift)
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 {
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+	pte_t *pte;
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+
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 	VM_WARN(!arch_irqs_disabled(), "%s called with irq enabled\n", __func__);
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-	return __find_linux_pte(pgdir, ea, is_thp, hshift);
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+	pte = __find_linux_pte(pgdir, ea, is_thp, hshift);
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+
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+#if defined(CONFIG_DEBUG_VM) &&						\
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+	!(defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE))
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+	/*
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+	 * We should not find huge page if these configs are not enabled.
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+	 */
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+	if (hshift)
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+		WARN_ON(*hshift);
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+#endif
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+	return pte;
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 }
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 static inline pte_t *find_init_mm_pte(unsigned long ea, unsigned *hshift)
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..
@@ -26,10 +38,22 @@
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 static inline pte_t *find_current_mm_pte(pgd_t *pgdir, unsigned long ea,
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 					 bool *is_thp, unsigned *hshift)
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 {
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+	pte_t *pte;
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+
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 	VM_WARN(!arch_irqs_disabled(), "%s called with irq enabled\n", __func__);
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 	VM_WARN(pgdir != current->mm->pgd,
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 		"%s lock less page table lookup called on wrong mm\n", __func__);
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-	return __find_linux_pte(pgdir, ea, is_thp, hshift);
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+	pte = __find_linux_pte(pgdir, ea, is_thp, hshift);
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+
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+#if defined(CONFIG_DEBUG_VM) &&						\
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+	!(defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE))
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+	/*
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+	 * We should not find huge page if these configs are not enabled.
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+	 */
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+	if (hshift)
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+		WARN_ON(*hshift);
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+#endif
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+	return pte;
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 }
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 #endif /* _ASM_POWERPC_PTE_WALK_H */