[PATCH v10 08/12] powerpc: mm: Replace p{u,m,4}d_is_leaf with p{u,m,4}_leaf

Rohan McLure rmclure at linux.ibm.com
Wed Mar 13 15:21:13 AEDT 2024


Replace occurrences of p{u,m,4}d_is_leaf with p{u,m,4}_leaf, as the
latter is the name given to checking that a higher-level entry in
multi-level paging contains a page translation entry (pte) throughout
all other archs.

Reviewed-by: Christophe Leroy <christophe.leroy at csgroup.eu>
Signed-off-by: Rohan McLure <rmclure at linux.ibm.com>
---
v9: No longer required in order to implement page table check, just a
refactor.
v10: Fix more occurances, and just delete p{u,m,4}_is_leaf() stubs as
equivalent p{u,m,4}_leaf() stubs already exist.
---
 arch/powerpc/include/asm/book3s/64/pgtable.h | 10 ++++----
 arch/powerpc/include/asm/pgtable.h           | 24 --------------------
 arch/powerpc/kvm/book3s_64_mmu_radix.c       | 12 +++++-----
 arch/powerpc/mm/book3s64/radix_pgtable.c     | 14 ++++++------
 arch/powerpc/mm/pgtable.c                    |  6 ++---
 arch/powerpc/mm/pgtable_64.c                 |  6 ++---
 arch/powerpc/xmon/xmon.c                     |  6 ++---
 7 files changed, 26 insertions(+), 52 deletions(-)

diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 62c43d3d80ec..382724c5e872 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -1443,16 +1443,14 @@ static inline bool is_pte_rw_upgrade(unsigned long old_val, unsigned long new_va
 /*
  * Like pmd_huge() and pmd_large(), but works regardless of config options
  */
-#define pmd_is_leaf pmd_is_leaf
-#define pmd_leaf pmd_is_leaf
-static inline bool pmd_is_leaf(pmd_t pmd)
+#define pmd_leaf pmd_leaf
+static inline bool pmd_leaf(pmd_t pmd)
 {
 	return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
 }
 
-#define pud_is_leaf pud_is_leaf
-#define pud_leaf pud_is_leaf
-static inline bool pud_is_leaf(pud_t pud)
+#define pud_leaf pud_leaf
+static inline bool pud_leaf(pud_t pud)
 {
 	return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
 }
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 9224f23065ff..0c0ffbe7a3b5 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -180,30 +180,6 @@ static inline void pte_frag_set(mm_context_t *ctx, void *p)
 }
 #endif
 
-#ifndef pmd_is_leaf
-#define pmd_is_leaf pmd_is_leaf
-static inline bool pmd_is_leaf(pmd_t pmd)
-{
-	return false;
-}
-#endif
-
-#ifndef pud_is_leaf
-#define pud_is_leaf pud_is_leaf
-static inline bool pud_is_leaf(pud_t pud)
-{
-	return false;
-}
-#endif
-
-#ifndef p4d_is_leaf
-#define p4d_is_leaf p4d_is_leaf
-static inline bool p4d_is_leaf(p4d_t p4d)
-{
-	return false;
-}
-#endif
-
 #define pmd_pgtable pmd_pgtable
 static inline pgtable_t pmd_pgtable(pmd_t pmd)
 {
diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c
index 4a1abb9f7c05..408d98f8a514 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_radix.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c
@@ -503,7 +503,7 @@ static void kvmppc_unmap_free_pmd(struct kvm *kvm, pmd_t *pmd, bool full,
 	for (im = 0; im < PTRS_PER_PMD; ++im, ++p) {
 		if (!pmd_present(*p))
 			continue;
-		if (pmd_is_leaf(*p)) {
+		if (pmd_leaf(*p)) {
 			if (full) {
 				pmd_clear(p);
 			} else {
@@ -532,7 +532,7 @@ static void kvmppc_unmap_free_pud(struct kvm *kvm, pud_t *pud,
 	for (iu = 0; iu < PTRS_PER_PUD; ++iu, ++p) {
 		if (!pud_present(*p))
 			continue;
-		if (pud_is_leaf(*p)) {
+		if (pud_leaf(*p)) {
 			pud_clear(p);
 		} else {
 			pmd_t *pmd;
@@ -635,12 +635,12 @@ int kvmppc_create_pte(struct kvm *kvm, pgd_t *pgtable, pte_t pte,
 		new_pud = pud_alloc_one(kvm->mm, gpa);
 
 	pmd = NULL;
-	if (pud && pud_present(*pud) && !pud_is_leaf(*pud))
+	if (pud && pud_present(*pud) && !pud_leaf(*pud))
 		pmd = pmd_offset(pud, gpa);
 	else if (level <= 1)
 		new_pmd = kvmppc_pmd_alloc();
 
-	if (level == 0 && !(pmd && pmd_present(*pmd) && !pmd_is_leaf(*pmd)))
+	if (level == 0 && !(pmd && pmd_present(*pmd) && !pmd_leaf(*pmd)))
 		new_ptep = kvmppc_pte_alloc();
 
 	/* Check if we might have been invalidated; let the guest retry if so */
@@ -658,7 +658,7 @@ int kvmppc_create_pte(struct kvm *kvm, pgd_t *pgtable, pte_t pte,
 		new_pud = NULL;
 	}
 	pud = pud_offset(p4d, gpa);
-	if (pud_is_leaf(*pud)) {
+	if (pud_leaf(*pud)) {
 		unsigned long hgpa = gpa & PUD_MASK;
 
 		/* Check if we raced and someone else has set the same thing */
@@ -709,7 +709,7 @@ int kvmppc_create_pte(struct kvm *kvm, pgd_t *pgtable, pte_t pte,
 		new_pmd = NULL;
 	}
 	pmd = pmd_offset(pud, gpa);
-	if (pmd_is_leaf(*pmd)) {
+	if (pmd_leaf(*pmd)) {
 		unsigned long lgpa = gpa & PMD_MASK;
 
 		/* Check if we raced and someone else has set the same thing */
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index e16e2fd104c5..46fa46ce6526 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -204,14 +204,14 @@ static void radix__change_memory_range(unsigned long start, unsigned long end,
 		pudp = pud_alloc(&init_mm, p4dp, idx);
 		if (!pudp)
 			continue;
-		if (pud_is_leaf(*pudp)) {
+		if (pud_leaf(*pudp)) {
 			ptep = (pte_t *)pudp;
 			goto update_the_pte;
 		}
 		pmdp = pmd_alloc(&init_mm, pudp, idx);
 		if (!pmdp)
 			continue;
-		if (pmd_is_leaf(*pmdp)) {
+		if (pmd_leaf(*pmdp)) {
 			ptep = pmdp_ptep(pmdp);
 			goto update_the_pte;
 		}
@@ -767,7 +767,7 @@ static void __meminit remove_pmd_table(pmd_t *pmd_start, unsigned long addr,
 		if (!pmd_present(*pmd))
 			continue;
 
-		if (pmd_is_leaf(*pmd)) {
+		if (pmd_leaf(*pmd)) {
 			if (IS_ALIGNED(addr, PMD_SIZE) &&
 			    IS_ALIGNED(next, PMD_SIZE)) {
 				if (!direct)
@@ -807,7 +807,7 @@ static void __meminit remove_pud_table(pud_t *pud_start, unsigned long addr,
 		if (!pud_present(*pud))
 			continue;
 
-		if (pud_is_leaf(*pud)) {
+		if (pud_leaf(*pud)) {
 			if (!IS_ALIGNED(addr, PUD_SIZE) ||
 			    !IS_ALIGNED(next, PUD_SIZE)) {
 				WARN_ONCE(1, "%s: unaligned range\n", __func__);
@@ -845,7 +845,7 @@ remove_pagetable(unsigned long start, unsigned long end, bool direct,
 		if (!p4d_present(*p4d))
 			continue;
 
-		if (p4d_is_leaf(*p4d)) {
+		if (p4d_leaf(*p4d)) {
 			if (!IS_ALIGNED(addr, P4D_SIZE) ||
 			    !IS_ALIGNED(next, P4D_SIZE)) {
 				WARN_ONCE(1, "%s: unaligned range\n", __func__);
@@ -1540,7 +1540,7 @@ int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
 
 int pud_clear_huge(pud_t *pud)
 {
-	if (pud_is_leaf(*pud)) {
+	if (pud_leaf(*pud)) {
 		pud_clear(pud);
 		return 1;
 	}
@@ -1587,7 +1587,7 @@ int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
 
 int pmd_clear_huge(pmd_t *pmd)
 {
-	if (pmd_is_leaf(*pmd)) {
+	if (pmd_leaf(*pmd)) {
 		pmd_clear(pmd);
 		return 1;
 	}
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index a04ae4449a02..e8e0289d7ab0 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -413,7 +413,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
 	if (p4d_none(p4d))
 		return NULL;
 
-	if (p4d_is_leaf(p4d)) {
+	if (p4d_leaf(p4d)) {
 		ret_pte = (pte_t *)p4dp;
 		goto out;
 	}
@@ -435,7 +435,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
 	if (pud_none(pud))
 		return NULL;
 
-	if (pud_is_leaf(pud)) {
+	if (pud_leaf(pud)) {
 		ret_pte = (pte_t *)pudp;
 		goto out;
 	}
@@ -474,7 +474,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
 		goto out;
 	}
 
-	if (pmd_is_leaf(pmd)) {
+	if (pmd_leaf(pmd)) {
 		ret_pte = (pte_t *)pmdp;
 		goto out;
 	}
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 5ac1fd30341b..0604c80dae66 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -100,7 +100,7 @@ EXPORT_SYMBOL(__pte_frag_size_shift);
 /* 4 level page table */
 struct page *p4d_page(p4d_t p4d)
 {
-	if (p4d_is_leaf(p4d)) {
+	if (p4d_leaf(p4d)) {
 		if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
 			VM_WARN_ON(!p4d_huge(p4d));
 		return pte_page(p4d_pte(p4d));
@@ -111,7 +111,7 @@ struct page *p4d_page(p4d_t p4d)
 
 struct page *pud_page(pud_t pud)
 {
-	if (pud_is_leaf(pud)) {
+	if (pud_leaf(pud)) {
 		if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
 			VM_WARN_ON(!pud_huge(pud));
 		return pte_page(pud_pte(pud));
@@ -125,7 +125,7 @@ struct page *pud_page(pud_t pud)
  */
 struct page *pmd_page(pmd_t pmd)
 {
-	if (pmd_is_leaf(pmd)) {
+	if (pmd_leaf(pmd)) {
 		/*
 		 * vmalloc_to_page may be called on any vmap address (not only
 		 * vmalloc), and it uses pmd_page() etc., when huge vmap is
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index c85fa3f0dd3b..d79d6633f333 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -3340,7 +3340,7 @@ static void show_pte(unsigned long addr)
 		return;
 	}
 
-	if (p4d_is_leaf(*p4dp)) {
+	if (p4d_leaf(*p4dp)) {
 		format_pte(p4dp, p4d_val(*p4dp));
 		return;
 	}
@@ -3354,7 +3354,7 @@ static void show_pte(unsigned long addr)
 		return;
 	}
 
-	if (pud_is_leaf(*pudp)) {
+	if (pud_leaf(*pudp)) {
 		format_pte(pudp, pud_val(*pudp));
 		return;
 	}
@@ -3368,7 +3368,7 @@ static void show_pte(unsigned long addr)
 		return;
 	}
 
-	if (pmd_is_leaf(*pmdp)) {
+	if (pmd_leaf(*pmdp)) {
 		format_pte(pmdp, pmd_val(*pmdp));
 		return;
 	}
-- 
2.44.0



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