Recent core ioremap changes require HAVE_ARCH_HUGE_VMAP subscribing archs provide arch_ioremap_p4d_supported() failing which will result in a build failure like the following.
ld: lib/ioremap.o: in function `.ioremap_huge_init': ioremap.c:(.init.text+0x3c): undefined reference to `.arch_ioremap_p4d_supported' This defines a stub implementation for arch_ioremap_p4d_supported() keeping it disabled for now to fix the build problem. Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: "Aneesh Kumar K.V" <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Stephen Rothwell <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Signed-off-by: Anshuman Khandual <[email protected]> --- This has been just build tested and fixes the problem reported earlier. arch/powerpc/mm/book3s64/radix_pgtable.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index 8904aa1..c81da88 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -1124,6 +1124,11 @@ void radix__ptep_modify_prot_commit(struct vm_area_struct *vma, set_pte_at(mm, addr, ptep, pte); } +int __init arch_ioremap_p4d_supported(void) +{ + return 0; +} + int __init arch_ioremap_pud_supported(void) { /* HPT does not cope with large pages in the vmalloc area */ -- 2.7.4
