From 7d6e7f7ffaba4e013c7a0589140431799bc17985 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Mon, 30 Mar 2015 10:41:04 +0530 Subject: powerpc/mm/thp: Return pte address if we find trans_splitting. For THP that is marked trans splitting, we return the pte. This require the callers to handle the pmd_trans_splitting scenario, if they care. All the current callers are either looking at pfn or write_ok, hence we don't need to update them. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- arch/powerpc/kvm/book3s_64_mmu_hv.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'arch/powerpc/kvm/book3s_64_mmu_hv.c') diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index 26df3864d85a..0fe9c92e78ed 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -537,20 +537,17 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, } /* if the guest wants write access, see if that is OK */ if (!writing && hpte_is_writable(r)) { - unsigned int hugepage_shift; pte_t *ptep, pte; unsigned long flags; - /* * We need to protect against page table destruction - * while looking up and updating the pte. + * hugepage split and collapse. */ local_irq_save(flags); ptep = find_linux_pte_or_hugepte(current->mm->pgd, - hva, &hugepage_shift); + hva, NULL); if (ptep) { - pte = kvmppc_read_update_linux_pte(ptep, 1, - hugepage_shift); + pte = kvmppc_read_update_linux_pte(ptep, 1); if (pte_write(pte)) write_ok = 1; } -- cgit v1.2.3