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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-21 15:40:40 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-21 15:40:40 +0300 |
commit | ef9a1618f95d32ac6abd4db42d9599a188ef3102 (patch) | |
tree | 7e5c63656c35813ef044a298214456daaa8f8fc0 /arch/riscv/mm/pageattr.c | |
parent | 8a7a1920d72c87692665de214fdc5dc37e34e5cb (diff) | |
parent | 9c5a72fbc90d829ffb761da64a73c23cd4e0503f (diff) | |
download | linux-ef9a1618f95d32ac6abd4db42d9599a188ef3102.tar.xz |
Merge v6.9.6
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/riscv/mm/pageattr.c')
-rw-r--r-- | arch/riscv/mm/pageattr.c | 28 |
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 |