From: Alexandre Ghiti <alexghiti@rivosinc.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Ryan Roberts <ryan.roberts@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-mm@kvack.org
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Subject: [PATCH v4 1/9] riscv: Safely remove huge_pte_offset() when manipulating NAPOT ptes
Date: Mon, 27 Jan 2025 10:35:22 +0100 [thread overview]
Message-ID: <20250127093530.19548-2-alexghiti@rivosinc.com> (raw)
In-Reply-To: <20250127093530.19548-1-alexghiti@rivosinc.com>
The pte_t pointer is expected to point to the first entry of the NAPOT
mapping so no need to use huge_pte_offset(), similarly to what is done
in arm64.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
arch/riscv/mm/hugetlbpage.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/riscv/mm/hugetlbpage.c b/arch/riscv/mm/hugetlbpage.c
index 42314f093922..6b09cd1ef41c 100644
--- a/arch/riscv/mm/hugetlbpage.c
+++ b/arch/riscv/mm/hugetlbpage.c
@@ -276,7 +276,6 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma,
order = napot_cont_order(pte);
pte_num = napot_pte_num(order);
- ptep = huge_pte_offset(mm, addr, napot_cont_size(order));
orig_pte = get_clear_contig_flush(mm, addr, ptep, pte_num);
if (pte_dirty(orig_pte))
@@ -322,7 +321,6 @@ void huge_ptep_set_wrprotect(struct mm_struct *mm,
order = napot_cont_order(pte);
pte_num = napot_pte_num(order);
- ptep = huge_pte_offset(mm, addr, napot_cont_size(order));
orig_pte = get_clear_contig_flush(mm, addr, ptep, pte_num);
orig_pte = pte_wrprotect(orig_pte);
--
2.39.2
next prev parent reply other threads:[~2025-01-27 9:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-27 9:35 [PATCH v4 0/9] Merge arm64/riscv hugetlbfs contpte support Alexandre Ghiti
2025-01-27 9:35 ` Alexandre Ghiti [this message]
2025-01-27 9:35 ` [PATCH v4 2/9] riscv: Restore the pfn in a NAPOT pte when manipulated by core mm code Alexandre Ghiti
2025-01-27 13:51 ` Matthew Wilcox
2025-02-14 12:39 ` Alexandre Ghiti
2025-02-24 14:34 ` Alexandre Ghiti
2025-01-27 9:35 ` [PATCH v4 3/9] mm: Use common huge_ptep_get() function for riscv/arm64 Alexandre Ghiti
2025-01-27 9:35 ` [PATCH v4 4/9] mm: Use common set_huge_pte_at() " Alexandre Ghiti
2025-01-27 9:35 ` [PATCH v4 5/9] mm: Use common huge_pte_clear() " Alexandre Ghiti
2025-01-27 9:35 ` [PATCH v4 6/9] mm: Use common huge_ptep_get_and_clear() " Alexandre Ghiti
2025-01-27 9:35 ` [PATCH v4 7/9] mm: Use common huge_ptep_set_access_flags() " Alexandre Ghiti
2025-01-27 9:35 ` [PATCH v4 8/9] mm: Use common huge_ptep_set_wrprotect() " Alexandre Ghiti
2025-01-27 9:35 ` [PATCH v4 9/9] mm: Use common huge_ptep_clear_flush() " Alexandre Ghiti
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