enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/arch/arm64/include/asm/pgtable.h
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@@ -650,9 +650,9 @@
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 	return __pud_to_phys(pud);
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 }
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-static inline unsigned long pud_page_vaddr(pud_t pud)
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+static inline pmd_t *pud_pgtable(pud_t pud)
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 {
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-	return (unsigned long)__va(pud_page_paddr(pud));
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+	return (pmd_t *)__va(pud_page_paddr(pud));
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 }
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 /* Find an entry in the second-level page table. */
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@@ -711,9 +711,9 @@
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 	return __p4d_to_phys(p4d);
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 }
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-static inline unsigned long p4d_page_vaddr(p4d_t p4d)
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+static inline pud_t *p4d_pgtable(p4d_t p4d)
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 {
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-	return (unsigned long)__va(p4d_page_paddr(p4d));
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+	return (pud_t *)__va(p4d_page_paddr(p4d));
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 }
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 /* Find an entry in the frst-level page table. */
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@@ -996,8 +996,7 @@
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  */
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 static inline bool arch_faults_on_old_pte(void)
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 {
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-	/* The register read below requires a stable CPU to make any sense */
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-	cant_migrate();
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+	WARN_ON(preemptible());
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 	return !cpu_has_hw_af();
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 }