diff options
| -rw-r--r-- | arch/x86/mm/pageattr.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 6c55fbdbd7e..a629cea5e46 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -221,8 +221,7 @@ static int split_large_page(pte_t *kpte, unsigned long address) { pgprot_t ref_prot = pte_pgprot(pte_clrhuge(*kpte)); gfp_t gfp_flags = GFP_KERNEL; - unsigned long flags; - unsigned long addr; + unsigned long flags, addr, pfn; pte_t *pbase, *tmp; struct page *base; unsigned int i, level; @@ -253,8 +252,12 @@ static int split_large_page(pte_t *kpte, unsigned long address) paravirt_alloc_pt(&init_mm, page_to_pfn(base)); #endif - for (i = 0; i < PTRS_PER_PTE; i++, addr += PAGE_SIZE) - set_pte(&pbase[i], pfn_pte(addr >> PAGE_SHIFT, ref_prot)); + /* + * Get the target pfn from the original entry: + */ + pfn = pte_pfn(*kpte); + for (i = 0; i < PTRS_PER_PTE; i++, pfn++) + set_pte(&pbase[i], pfn_pte(pfn, ref_prot)); /* * Install the new, split up pagetable. Important detail here: |