diff mbox series

[v3,14/18] powerpc/64s: Clear MMU_FTR_HPTE_TABLE when booting in radix

Message ID 20211021223013.2641952-15-npiggin@gmail.com (mailing list archive)
State Superseded
Headers show
Series powerpc: Make hash MMU code build configurable | expand

Commit Message

Nicholas Piggin Oct. 21, 2021, 10:30 p.m. UTC 
---
 arch/powerpc/mm/init_64.c | 1 +
 arch/powerpc/mm/pgtable.c | 9 ++++++---
 2 files changed, 7 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 386be136026e..23fbb2b0277c 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -453,6 +453,7 @@  void __init mmu_early_init_devtree(void)
 		early_check_vec5();
 
 	if (early_radix_enabled()) {
+		cur_cpu_spec->mmu_features &= ~MMU_FTR_HPTE_TABLE;
 		radix__early_init_devtree();
 		/*
 		 * We have finalized the translation we are going to use by now.
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index cd16b407f47e..9e67472b50be 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -81,9 +81,6 @@  static struct page *maybe_pte_to_page(pte_t pte)
 
 static pte_t set_pte_filter_hash(pte_t pte)
 {
-	if (radix_enabled())
-		return pte;
-
 	pte = __pte(pte_val(pte) & ~_PAGE_HPTEFLAGS);
 	if (pte_looks_normal(pte) && !(cpu_has_feature(CPU_FTR_COHERENT_ICACHE) ||
 				       cpu_has_feature(CPU_FTR_NOEXECUTE))) {
@@ -112,6 +109,9 @@  static inline pte_t set_pte_filter(pte_t pte)
 {
 	struct page *pg;
 
+	if (radix_enabled())
+		return pte;
+
 	if (mmu_has_feature(MMU_FTR_HPTE_TABLE))
 		return set_pte_filter_hash(pte);
 
@@ -144,6 +144,9 @@  static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma,
 {
 	struct page *pg;
 
+	if (IS_ENABLED(CONFIG_PPC_BOOK3S_64))
+		return pte;
+
 	if (mmu_has_feature(MMU_FTR_HPTE_TABLE))
 		return pte;