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 <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 26df386..0fe9c92 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -537,20 +537,17 @@
}
/* 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;
}
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index f559b25..d839f08c 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -219,7 +219,7 @@
local_irq_restore(flags);
return H_PARAMETER;
}
- pte = kvmppc_read_update_linux_pte(ptep, writing, hpage_shift);
+ pte = kvmppc_read_update_linux_pte(ptep, writing);
if (pte_present(pte) && !pte_protnone(pte)) {
if (writing && !pte_write(pte))
/* make the actual HPTE be read-only */
