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Diffstat (limited to 'arch/riscv/mm/pageattr.c')
-rw-r--r--arch/riscv/mm/pageattr.c28
1 files changed, 22 insertions, 6 deletions
diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c
index 410056a50aa9..271d01a5ba4d 100644
--- a/arch/riscv/mm/pageattr.c
+++ b/arch/riscv/mm/pageattr.c
@@ -387,17 +387,33 @@ int set_direct_map_default_noflush(struct page *page)
}
#ifdef CONFIG_DEBUG_PAGEALLOC
+static int debug_pagealloc_set_page(pte_t *pte, unsigned long addr, void *data)
+{
+ int enable = *(int *)data;
+
+ unsigned long val = pte_val(ptep_get(pte));
+
+ if (enable)
+ val |= _PAGE_PRESENT;
+ else
+ val &= ~_PAGE_PRESENT;
+
+ set_pte(pte, __pte(val));
+
+ return 0;
+}
+
void __kernel_map_pages(struct page *page, int numpages, int enable)
{
if (!debug_pagealloc_enabled())
return;
- if (enable)
- __set_memory((unsigned long)page_address(page), numpages,
- __pgprot(_PAGE_PRESENT), __pgprot(0));
- else
- __set_memory((unsigned long)page_address(page), numpages,
- __pgprot(0), __pgprot(_PAGE_PRESENT));
+ unsigned long start = (unsigned long)page_address(page);
+ unsigned long size = PAGE_SIZE * numpages;
+
+ apply_to_existing_page_range(&init_mm, start, size, debug_pagealloc_set_page, &enable);
+
+ flush_tlb_kernel_range(start, start + size);
}
#endif