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Date: Wed, 26 Jun 2019 18:51:00 +0530 From: Anshuman Khandual <anshuman.khandual@....com> To: linux-mm@...ck.org Cc: Anshuman Khandual <anshuman.khandual@....com>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...ba.org>, Michael Ellerman <mpe@...erman.id.au>, "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>, Nicholas Piggin <npiggin@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, Stephen Rothwell <sfr@...b.auug.org.au>, linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org, linux-next@...r.kernel.org Subject: [PATCH] powerpc/64s/radix: Define arch_ioremap_p4d_supported() 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 <benh@...nel.crashing.org> Cc: Paul Mackerras <paulus@...ba.org> Cc: Michael Ellerman <mpe@...erman.id.au> Cc: "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com> Cc: Nicholas Piggin <npiggin@...il.com> Cc: Andrew Morton <akpm@...ux-foundation.org> Cc: Stephen Rothwell <sfr@...b.auug.org.au> Cc: linuxppc-dev@...ts.ozlabs.org Cc: linux-kernel@...r.kernel.org Cc: linux-next@...r.kernel.org Signed-off-by: Anshuman Khandual <anshuman.khandual@....com> --- 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
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