MIPS: Rewrite pfn_valid to work in modules, too. (8b923214) · Commits · e / devices / android_kernel_oneplus_sm7250

This fixes: MODPOST 393 modules ERROR: "min_low_pfn" [arch/mips/kvm/kvm.ko] undefined! make[3]: *** [__modpost] Error 1 It would have been possible to just export min_low_pfn but in the end pfn_valid should return 1 for any pfn argument for which a struct page exists so using min_low_pfn was wrong anyway. Signed-off-by:

Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/page.h

+7 −8

Original line number	Diff line number	Diff line
		@@ -171,14 +171,13 @@ typedef struct { unsigned long pgprot; } pgprot_t;

		#ifdef CONFIG_FLATMEM

		#define pfn_valid(pfn) \
		({ \
		unsigned long __pfn = (pfn); \
		/* avoid <linux/bootmem.h> include hell */ \
		extern unsigned long min_low_pfn; \
		\
		__pfn >= min_low_pfn && __pfn < max_mapnr; \
		})
		static inline int pfn_valid(unsigned long pfn)
		{
		/* avoid <linux/mm.h> include hell */
		extern unsigned long max_mapnr;

		return pfn >= ARCH_PFN_OFFSET && pfn < max_mapnr;
		}

		#elif defined(CONFIG_SPARSEMEM)