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>,
Matthew Wilcox <willy@infradead.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Alexandre Ghiti <alex@ghiti.fr>,
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 v5 1/9] riscv: Safely remove huge_pte_offset() when manipulating NAPOT ptes
Date: Fri, 21 Mar 2025 14:06:27 +0100 [thread overview]
Message-ID: <20250321130635.227011-2-alexghiti@rivosinc.com> (raw)
In-Reply-To: <20250321130635.227011-1-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 375dd96bb4a0..3192ad804279 100644
--- a/arch/riscv/mm/hugetlbpage.c
+++ b/arch/riscv/mm/hugetlbpage.c
@@ -287,7 +287,6 @@ 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))
@@ -334,7 +333,6 @@ 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:[~2025-03-21 13:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-21 13:06 [PATCH v5 0/9] Merge arm64/riscv hugetlbfs contpte support Alexandre Ghiti
2025-03-21 13:06 ` Alexandre Ghiti [this message]
2025-03-21 13:06 ` [PATCH v5 2/9] riscv: Restore the pfn in a NAPOT pte when manipulated by core mm code Alexandre Ghiti
2025-03-21 13:06 ` [PATCH v5 3/9] mm: Use common huge_ptep_get() function for riscv/arm64 Alexandre Ghiti
2025-03-21 13:06 ` [PATCH v5 4/9] mm: Use common set_huge_pte_at() " Alexandre Ghiti
2025-03-21 13:06 ` [PATCH v5 5/9] mm: Use common huge_pte_clear() " Alexandre Ghiti
2025-03-21 13:06 ` [PATCH v5 6/9] mm: Use common huge_ptep_get_and_clear() " Alexandre Ghiti
2025-03-21 13:06 ` [PATCH v5 7/9] mm: Use common huge_ptep_set_access_flags() " Alexandre Ghiti
2025-03-21 13:06 ` [PATCH v5 8/9] mm: Use common huge_ptep_set_wrprotect() " Alexandre Ghiti
2025-03-21 13:06 ` [PATCH v5 9/9] mm: Use common huge_ptep_clear_flush() " Alexandre Ghiti
2025-03-21 17:24 ` [PATCH v5 0/9] Merge arm64/riscv hugetlbfs contpte support Christophe Leroy
2025-03-25 12:36 ` Alexandre Ghiti
2025-04-07 12:04 ` Alexandre Ghiti
2025-04-29 14:09 ` Ryan Roberts
2025-05-05 16:08 ` Alexandre Ghiti
2025-05-08 12:30 ` Will Deacon
2025-05-09 11:09 ` Alexandre Ghiti
2025-05-09 13:02 ` Ryan Roberts
2025-05-21 14:57 ` Lorenzo Stoakes
2025-05-27 9:25 ` Alexandre Ghiti
2025-05-27 9:37 ` Lorenzo Stoakes
2025-05-28 14:51 ` Ryan Roberts
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