From a05ef161cdd22faccffe06f21fc8f1e249565385 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 14 Feb 2017 13:44:05 +1100 Subject: [PATCH] powerpc/mm: Fix build break when CMA=n && SPAPR_TCE_IOMMU=y MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently the build breaks if CMA=n and SPAPR_TCE_IOMMU=y: arch/powerpc/mm/mmu_context_iommu.c: In function ‘mm_iommu_get’: arch/powerpc/mm/mmu_context_iommu.c:193:42: error: ‘MIGRATE_CMA’ undeclared (first use in this function) if (get_pageblock_migratetype(page) == MIGRATE_CMA) { ^~~~~~~~~~~ Fix it by using the existing is_migrate_cma_page(), which evaulates to false when CMA=n. Fixes: 2e5bbb5461f1 ("KVM: PPC: Book3S HV: Migrate pinned pages out of CMA") Signed-off-by: Michael Ellerman --- arch/powerpc/mm/mmu_context_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/mm/mmu_context_iommu.c b/arch/powerpc/mm/mmu_context_iommu.c index 104bad029ce9..7de7124ac91b 100644 --- a/arch/powerpc/mm/mmu_context_iommu.c +++ b/arch/powerpc/mm/mmu_context_iommu.c @@ -184,7 +184,7 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries, * of the CMA zone if possible. NOTE: faulting in + migration * can be expensive. Batching can be considered later */ - if (get_pageblock_migratetype(page) == MIGRATE_CMA) { + if (is_migrate_cma_page(page)) { if (mm_iommu_move_page_from_cma(page)) goto populate; if (1 != get_user_pages_fast(ua + (i << PAGE_SHIFT),