walk_page_range() is going to be allowed to walk page tables other than those of user space. For this it needs to know when it has reached a 'leaf' entry in the page tables. This information is provided by the p?d_large() functions/macros.
For ia64 leaf entries are always at the lowest level, so implement stubs returning 0. CC: Tony Luck <tony.l...@intel.com> CC: Fenghua Yu <fenghua...@intel.com> CC: linux-i...@vger.kernel.org Signed-off-by: Steven Price <steven.pr...@arm.com> --- arch/ia64/include/asm/pgtable.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h index b1e7468eb65a..84dda295391b 100644 --- a/arch/ia64/include/asm/pgtable.h +++ b/arch/ia64/include/asm/pgtable.h @@ -271,6 +271,7 @@ extern unsigned long VMALLOC_END; #define pmd_none(pmd) (!pmd_val(pmd)) #define pmd_bad(pmd) (!ia64_phys_addr_valid(pmd_val(pmd))) #define pmd_present(pmd) (pmd_val(pmd) != 0UL) +#define pmd_large(pmd) (0) #define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL) #define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & _PFN_MASK)) #define pmd_page(pmd) virt_to_page((pmd_val(pmd) + PAGE_OFFSET)) @@ -278,6 +279,7 @@ extern unsigned long VMALLOC_END; #define pud_none(pud) (!pud_val(pud)) #define pud_bad(pud) (!ia64_phys_addr_valid(pud_val(pud))) #define pud_present(pud) (pud_val(pud) != 0UL) +#define pud_large(pud) (0) #define pud_clear(pudp) (pud_val(*(pudp)) = 0UL) #define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & _PFN_MASK)) #define pud_page(pud) virt_to_page((pud_val(pud) + PAGE_OFFSET)) @@ -286,6 +288,7 @@ extern unsigned long VMALLOC_END; #define pgd_none(pgd) (!pgd_val(pgd)) #define pgd_bad(pgd) (!ia64_phys_addr_valid(pgd_val(pgd))) #define pgd_present(pgd) (pgd_val(pgd) != 0UL) +#define pgd_large(pgd) (0) #define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL) #define pgd_page_vaddr(pgd) ((unsigned long) __va(pgd_val(pgd) & _PFN_MASK)) #define pgd_page(pgd) virt_to_page((pgd_val(pgd) + PAGE_OFFSET)) -- 2.20.1
