From: Rohan McLure <rmclure@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Rohan McLure <rmclure@linux.ibm.com>
Subject: [PATCH v9 4/7] powerpc: mm: Default p{m,u}d_pte implementations
Date: Thu, 30 Nov 2023 13:53:57 +1100 [thread overview]
Message-ID: <20231130025404.37179-7-rmclure@linux.ibm.com> (raw)
In-Reply-To: <20231130025404.37179-2-rmclure@linux.ibm.com>
For 32-bit systems which have no usecases for p{m,u}d_pte() prior to
page table checking, implement default stubs.
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
---
v9: New patch
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 3 +++
arch/powerpc/include/asm/nohash/64/pgtable.h | 2 ++
arch/powerpc/include/asm/pgtable.h | 17 +++++++++++++++++
3 files changed, 22 insertions(+)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 8fdb7667c509..2454174b26cb 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -887,6 +887,8 @@ static inline int pud_present(pud_t pud)
extern struct page *pud_page(pud_t pud);
extern struct page *pmd_page(pmd_t pmd);
+
+#define pud_pte pud_pte
static inline pte_t pud_pte(pud_t pud)
{
return __pte_raw(pud_raw(pud));
@@ -1043,6 +1045,7 @@ static inline void __kernel_map_pages(struct page *page, int numpages, int enabl
}
#endif
+#define pmd_pte pmd_pte
static inline pte_t pmd_pte(pmd_t pmd)
{
return __pte_raw(pmd_raw(pmd));
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index f58cbebde26e..09a34fe196ae 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -93,6 +93,7 @@ static inline void pmd_clear(pmd_t *pmdp)
*pmdp = __pmd(0);
}
+#define pmd_pte pmd_pte
static inline pte_t pmd_pte(pmd_t pmd)
{
return __pte(pmd_val(pmd));
@@ -134,6 +135,7 @@ static inline pmd_t *pud_pgtable(pud_t pud)
extern struct page *pud_page(pud_t pud);
+#define pud_pte pud_pte
static inline pte_t pud_pte(pud_t pud)
{
return __pte(pud_val(pud));
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 9c0f2151f08f..d7d0f47760d3 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -233,6 +233,23 @@ static inline int pud_pfn(pud_t pud)
}
#endif
+#ifndef pmd_pte
+#define pmd_pte pmd_pte
+static inline pte_t pmd_pte(pmd_t pmd)
+{
+ WARN_ONCE(1, "pmd: platform does not use pmd entries directly");
+ return __pte(pmd_val(pmd));
+}
+#endif
+
+#ifndef pud_pte
+#define pud_pte pud_pte
+static inline pte_t pud_pte(pud_t pud)
+{
+ WARN_ONCE(1, "pud: platform does not use pud entries directly");
+ return __pte(pud_val(pud));
+}
+#endif
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_PGTABLE_H */
--
2.43.0
next prev parent reply other threads:[~2023-11-30 2:56 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-30 2:53 [PATCH v9 0/7] Support page table check Rohan McLure
2023-11-30 2:53 ` [PATCH v9 1/7] powerpc: mm: Replace p{u,m,4}d_is_leaf with p{u,m,4}_leaf Rohan McLure
2023-11-30 2:53 ` [PATCH v9 2/7] powerpc: mm: Implement p{m,u,4}d_leaf on all platforms Rohan McLure
2023-11-30 6:36 ` Christophe Leroy
2023-11-30 2:53 ` [PATCH v9 3/7] powerpc: mm: Add common pud_pfn stub for " Rohan McLure
2023-11-30 6:43 ` Christophe Leroy
2023-11-30 2:53 ` Rohan McLure [this message]
2023-11-30 7:35 ` [PATCH v9 4/7] powerpc: mm: Default p{m,u}d_pte implementations Christophe Leroy
2023-12-11 2:53 ` Rohan McLure
2023-11-30 2:53 ` [PATCH v9 5/7] poweprc: mm: Implement *_user_accessible_page() for ptes Rohan McLure
2023-11-30 7:01 ` Christophe Leroy
2023-11-30 2:53 ` [PATCH v9 6/7] powerpc: mm: Use __set_pte_at() for early-boot / internal usages Rohan McLure
2023-11-30 7:18 ` Christophe Leroy
2023-11-30 2:54 ` [PATCH v9 7/7] powerpc: mm: Support page table check Rohan McLure
2023-11-30 7:28 ` Christophe Leroy
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