From: Lu Baolu <baolu.lu@linux.intel.com>
To: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Kevin Tian <kevin.tian@intel.com>,
Jason Gunthorpe <jgg@nvidia.com>, Jann Horn <jannh@google.com>,
Vasant Hegde <vasant.hegde@amd.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@intel.com>,
Alistair Popple <apopple@nvidia.com>,
Peter Zijlstra <peterz@infradead.org>,
Uladzislau Rezki <urezki@gmail.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Andy Lutomirski <luto@kernel.org>, Yi Lai <yi1.lai@intel.com>
Cc: iommu@lists.linux.dev, security@kernel.org, x86@kernel.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Lu Baolu <baolu.lu@linux.intel.com>
Subject: [PATCH v5 5/8] x86/mm: Use pagetable_free()
Date: Fri, 19 Sep 2025 13:40:03 +0800 [thread overview]
Message-ID: <20250919054007.472493-6-baolu.lu@linux.intel.com> (raw)
In-Reply-To: <20250919054007.472493-1-baolu.lu@linux.intel.com>
The kernel's memory management subsystem provides a dedicated interface,
pagetable_free(), for freeing page table pages. Updates two call sites to
use pagetable_free() instead of the lower-level __free_page() or
free_pages(). This improves code consistency and clarity, and ensures the
correct freeing mechanism is used.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
arch/x86/mm/init_64.c | 2 +-
arch/x86/mm/pat/set_memory.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index b9426fce5f3e..3d9a5e4ccaa4 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1031,7 +1031,7 @@ static void __meminit free_pagetable(struct page *page, int order)
free_reserved_pages(page, nr_pages);
#endif
} else {
- free_pages((unsigned long)page_address(page), order);
+ pagetable_free(page_ptdesc(page));
}
}
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
index 8834c76f91c9..8b78a8855024 100644
--- a/arch/x86/mm/pat/set_memory.c
+++ b/arch/x86/mm/pat/set_memory.c
@@ -438,7 +438,7 @@ static void cpa_collapse_large_pages(struct cpa_data *cpa)
list_for_each_entry_safe(ptdesc, tmp, &pgtables, pt_list) {
list_del(&ptdesc->pt_list);
- __free_page(ptdesc_page(ptdesc));
+ pagetable_free(ptdesc);
}
}
--
2.43.0
next prev parent reply other threads:[~2025-09-19 5:43 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-19 5:39 [PATCH v5 0/8] Fix stale IOTLB entries for kernel address space Lu Baolu
2025-09-19 5:39 ` [PATCH v5 1/8] mm: Add a ptdesc flag to mark kernel page tables Lu Baolu
2025-10-08 19:56 ` Matthew Wilcox
2025-10-11 6:24 ` Baolu Lu
2025-09-19 5:40 ` [PATCH v5 2/8] mm: Actually mark kernel page table pages Lu Baolu
2025-10-09 19:19 ` David Hildenbrand
2025-10-13 7:17 ` Mike Rapoport
2025-09-19 5:40 ` [PATCH v5 3/8] x86/mm: Use 'ptdesc' when freeing PMD pages Lu Baolu
2025-10-09 19:25 ` David Hildenbrand
2025-10-09 19:31 ` Dave Hansen
2025-10-11 6:26 ` Baolu Lu
2025-09-19 5:40 ` [PATCH v5 4/8] mm: Introduce pure page table freeing function Lu Baolu
2025-10-09 19:26 ` David Hildenbrand
2025-10-13 7:24 ` Mike Rapoport
2025-09-19 5:40 ` Lu Baolu [this message]
2025-09-24 12:40 ` [PATCH v5 5/8] x86/mm: Use pagetable_free() Jason Gunthorpe
2025-10-09 19:26 ` David Hildenbrand
2025-10-13 7:28 ` Mike Rapoport
2025-09-19 5:40 ` [PATCH v5 6/8] mm: Introduce deferred freeing for kernel page tables Lu Baolu
2025-10-09 19:28 ` David Hildenbrand
2025-10-09 19:32 ` Dave Hansen
2025-10-10 15:47 ` David Hildenbrand
2025-10-11 6:30 ` Baolu Lu
2025-09-19 5:40 ` [PATCH v5 7/8] mm: Hook up Kconfig options for async page table freeing Lu Baolu
2025-09-19 5:40 ` [PATCH v5 8/8] iommu/sva: Invalidate stale IOTLB entries for kernel address space Lu Baolu
2025-09-25 20:24 ` [PATCH v5 0/8] Fix " Dave Hansen
2025-10-08 19:42 ` Dave Hansen
2025-10-09 19:16 ` David Hildenbrand
2025-10-14 13:21 ` Baolu Lu
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