From: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Date: Wed, 28 Mar 2018 00:25:41 +0000 (+0200)
Subject: powerpc/mm: Use memblock API for PPC32 page_is_ram
X-Git-Tag: v5.15~9084^2~47
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f65e67c7e3308c0af08080782d79a8cb95c44929;p=platform%2Fkernel%2Flinux-starfive.git

powerpc/mm: Use memblock API for PPC32 page_is_ram

To support accurate checking for different blocks of memory on PPC32,
use the same memblock-based approach that's already used on PPC64 also
on PPC32.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 8f335cf..737f8a4 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -82,11 +82,7 @@ static inline pte_t *virt_to_kpte(unsigned long vaddr)
 
 int page_is_ram(unsigned long pfn)
 {
-#ifndef CONFIG_PPC64	/* XXX for now */
-	return pfn < max_pfn;
-#else
 	return memblock_is_memory(__pfn_to_phys(pfn));
-#endif
 }
 
 pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,