diff options
Diffstat (limited to 'arch/x86/mm/pageattr.c')
| -rw-r--r-- | arch/x86/mm/pageattr.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index afd40054d15..0389cb8f6b1 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -536,8 +536,14 @@ static int split_large_page(pte_t *kpte, unsigned long address) 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)) + 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. Important details here: @@ -655,12 +661,21 @@ static int cpa_process_alias(struct cpa_data *cpa) if (cpa->pfn > max_pfn_mapped) 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: */ - if (!within(cpa->vaddr, PAGE_OFFSET, - PAGE_OFFSET + (max_pfn_mapped << PAGE_SHIFT))) { + if (!(within(cpa->vaddr, PAGE_OFFSET, + PAGE_OFFSET + (max_low_pfn_mapped << PAGE_SHIFT)) +#ifdef CONFIG_X86_64 + || within(cpa->vaddr, PAGE_OFFSET + (1UL<<32), + PAGE_OFFSET + (max_pfn_mapped << PAGE_SHIFT)) +#endif + )) { alias_cpa = *cpa; alias_cpa.vaddr = (unsigned long) __va(cpa->pfn << PAGE_SHIFT); |