From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Andrew Morton <akpm@linux-foundation.org>,
Nicholas Piggin <npiggin@gmail.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Mike Rapoport <rppt@kernel.org>
Cc: linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, sparclinux@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCH v2 2/5] mm/pgtable: Add stubs for {pmd/pub}_{set/clear}_huge
Date: Wed, 12 May 2021 05:00:59 +0000 (UTC) [thread overview]
Message-ID: <5ac5976419350e8e048d463a64cae449eb3ba4b0.1620795204.git.christophe.leroy@csgroup.eu> (raw)
In-Reply-To: <cover.1620795204.git.christophe.leroy@csgroup.eu>
For architectures with no PMD and/or no PUD, add stubs
similar to what we have for architectures without P4D.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
include/linux/pgtable.h | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 46b13780c2c8..d41474a2d255 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1371,10 +1371,34 @@ static inline int p4d_clear_huge(p4d_t *p4d)
}
#endif /* !__PAGETABLE_P4D_FOLDED */
+#ifndef __PAGETABLE_PUD_FOLDED
int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot);
-int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot);
int pud_clear_huge(pud_t *pud);
+#else
+static inline int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
+{
+ return 0;
+}
+static inline int pud_clear_huge(pud_t *pud)
+{
+ return 0;
+}
+#endif /* !__PAGETABLE_PUD_FOLDED */
+
+#ifndef __PAGETABLE_PMD_FOLDED
+int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot);
int pmd_clear_huge(pmd_t *pmd);
+#else
+static inline int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
+{
+ return 0;
+}
+static inline int pmd_clear_huge(pmd_t *pmd)
+{
+ return 0;
+}
+#endif /* !__PAGETABLE_PMD_FOLDED */
+
int p4d_free_pud_page(p4d_t *p4d, unsigned long addr);
int pud_free_pmd_page(pud_t *pud, unsigned long addr);
int pmd_free_pte_page(pmd_t *pmd, unsigned long addr);
--
2.25.0
next prev parent reply other threads:[~2021-05-12 5:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 5:00 [PATCH v2 0/5] Implement huge VMAP and VMALLOC on powerpc 8xx Christophe Leroy
2021-05-12 5:00 ` [PATCH v2 1/5] mm/hugetlb: Change parameters of arch_make_huge_pte() Christophe Leroy
2021-05-12 5:00 ` Christophe Leroy [this message]
2021-05-12 5:01 ` [PATCH v2 3/5] mm/vmalloc: Enable mapping of huge pages at pte level in vmap Christophe Leroy
2021-05-12 5:01 ` [PATCH v2 4/5] mm/vmalloc: Enable mapping of huge pages at pte level in vmalloc Christophe Leroy
2021-05-12 5:01 ` [PATCH v2 5/5] powerpc/8xx: Add support for huge pages on VMAP and VMALLOC Christophe Leroy
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