diff options
| author | Vishal Moola (Oracle) <vishal.moola@gmail.com> | 2026-03-03 22:48:27 +0300 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2026-03-04 21:08:54 +0300 |
| commit | e751303e0ad2e998f421d104193f6904df3516d1 (patch) | |
| tree | d834c7b16da0d67863716a610780a74dc2e98eea | |
| parent | b2203a9bf53237368a7c7fc976c9616b5562af8e (diff) | |
| download | linux-e751303e0ad2e998f421d104193f6904df3516d1.tar.xz | |
x86/mm/pat: Convert split_large_page() to use ptdescs
Use the ptdesc APIs for all page table allocation and free sites to
allow their separate allocation from struct page in the future.
Update split_large_page() to allocate a ptdesc instead of allocating a
page for use as a page table.
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Link: https://patch.msgid.link/20260303194828.1406905-5-vishal.moola@gmail.com
| -rw-r--r-- | arch/x86/mm/pat/set_memory.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 17c1c28e3491..cba907c39718 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -1119,9 +1119,10 @@ set: static int __split_large_page(struct cpa_data *cpa, pte_t *kpte, unsigned long address, - struct page *base) + struct ptdesc *ptdesc) { unsigned long lpaddr, lpinc, ref_pfn, pfn, pfninc = 1; + struct page *base = ptdesc_page(ptdesc); pte_t *pbase = (pte_t *)page_address(base); unsigned int i, level; pgprot_t ref_prot; @@ -1226,18 +1227,18 @@ __split_large_page(struct cpa_data *cpa, pte_t *kpte, unsigned long address, static int split_large_page(struct cpa_data *cpa, pte_t *kpte, unsigned long address) { - struct page *base; + struct ptdesc *ptdesc; if (!debug_pagealloc_enabled()) spin_unlock(&cpa_lock); - base = alloc_pages(GFP_KERNEL, 0); + ptdesc = pagetable_alloc(GFP_KERNEL, 0); if (!debug_pagealloc_enabled()) spin_lock(&cpa_lock); - if (!base) + if (!ptdesc) return -ENOMEM; - if (__split_large_page(cpa, kpte, address, base)) - __free_page(base); + if (__split_large_page(cpa, kpte, address, ptdesc)) + pagetable_free(ptdesc); return 0; } |