We are going to map ram only, so under max_low_pfn_mapped,
between 4g and max_pfn_mapped does not mean mapped at all.
Use pfn_range_is_mapped() directly.
Signed-off-by: Yinghai Lu <ying...@kernel.org>
---
arch/x86/mm/pageattr.c | 16 +++-------------
1 files changed, 3 insertions(+), 13 deletions(-)
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index a718e0d..44acfcd 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -551,16 +551,10 @@ static int split_large_page(pte_t *kpte, unsigned long
address)
for (i = 0; i < PTRS_PER_PTE; i++, pfn += pfninc)
set_pte(&pbase[i], pfn_pte(pfn, ref_prot));
- if (address >= (unsigned long)__va(0) &&
- address < (unsigned long)__va(max_low_pfn_mapped << PAGE_SHIFT))
+ if (pfn_range_is_mapped(PFN_DOWN(__pa(address)),
+ PFN_DOWN(__pa(address)) + 1))
split_page_count(level);
-#ifdef CONFIG_X86_64
- if (address >= (unsigned long)__va(1UL<<32) &&
- address < (unsigned long)__va(max_pfn_mapped << PAGE_SHIFT))
- split_page_count(level);
-#endif
-
/*
* Install the new, split up pagetable.
*
@@ -729,13 +723,9 @@ static int cpa_process_alias(struct cpa_data *cpa)
unsigned long vaddr;
int ret;
- if (cpa->pfn >= max_pfn_mapped)
+ if (!pfn_range_is_mapped(cpa->pfn, cpa->pfn + 1))
return 0;
-#ifdef CONFIG_X86_64
- if (cpa->pfn >= max_low_pfn_mapped && cpa->pfn < (1UL<<(32-PAGE_SHIFT)))
- return 0;
-#endif
/*
* No need to redo, when the primary call touched the direct
* mapping already:
--
1.7.7
--
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