From: Jinjiang Tu <tujinjiang@huawei.com>
To: <akpm@linux-foundation.org>, <david@kernel.org>, <ljs@kernel.org>,
<catalin.marinas@arm.com>, <will@kernel.org>,
<mark.rutland@arm.com>, <ryan.roberts@arm.com>,
<peterx@redhat.com>, <dave.jiang@intel.com>,
<linux-arm-kernel@lists.infradead.org>, <linux-mm@kvack.org>
Cc: <wangkefeng.wang@huawei.com>, <sunnanyong@huawei.com>,
<tujinjiang@huawei.com>
Subject: [PATCH 2/3] arm64: simplify pmd_special and pmd_mkspecial
Date: Wed, 9 Sep 2026 17:00:17 +0800 [thread overview]
Message-ID: <20260909090018.1991485-3-tujinjiang@huawei.com> (raw)
In-Reply-To: <20260909090018.1991485-1-tujinjiang@huawei.com>
Use pte_special() and pte_mkspecial() helper to simplify pmd_special()
and pmd_mkspecial(), and kill unused set_pmd_bit() and clear_pmd_bit()
helper.
Signed-off-by: Jinjiang Tu <tujinjiang@huawei.com>
---
arch/arm64/include/asm/pgtable.h | 19 ++-----------------
1 file changed, 2 insertions(+), 17 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 6000905a2e86..427ea3d2bac7 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -243,18 +243,6 @@ static inline pte_t set_pte_bit(pte_t pte, pgprot_t prot)
return pte;
}
-static inline pmd_t clear_pmd_bit(pmd_t pmd, pgprot_t prot)
-{
- pmd_val(pmd) &= ~pgprot_val(prot);
- return pmd;
-}
-
-static inline pmd_t set_pmd_bit(pmd_t pmd, pgprot_t prot)
-{
- pmd_val(pmd) |= pgprot_val(prot);
- return pmd;
-}
-
static inline pte_t pte_mkwrite_novma(pte_t pte)
{
pte = set_pte_bit(pte, __pgprot(PTE_WRITE));
@@ -619,11 +607,8 @@ static inline pmd_t pmd_mkhuge(pmd_t pmd)
}
#ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP
-#define pmd_special(pte) (!!((pmd_val(pte) & PTE_SPECIAL)))
-static inline pmd_t pmd_mkspecial(pmd_t pmd)
-{
- return set_pmd_bit(pmd, __pgprot(PTE_SPECIAL));
-}
+#define pmd_special(pmd) pte_special(pmd_pte(pmd))
+#define pmd_mkspecial(pmd) pte_pmd(pte_mkspecial(pmd_pte(pmd)))
#endif
#define __pmd_to_phys(pmd) __pte_to_phys(pmd_pte(pmd))
--
2.43.0
next prev parent reply other threads:[~2026-09-09 9:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-09 9:00 [PATCH 0/3] arm64: Add support for PUD THP Jinjiang Tu
2026-09-09 9:00 ` [PATCH 1/3] mm: define generic pudp_invalidate() implementation Jinjiang Tu
2026-09-09 10:24 ` David Hildenbrand (Arm)
2026-09-11 2:28 ` Jinjiang Tu
2026-09-09 9:00 ` Jinjiang Tu [this message]
2026-09-09 9:00 ` [PATCH 3/3] arm64: Add support for PUD THP Jinjiang Tu
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