diff options
| author | Yang Shi <yang@os.amperecomputing.com> | 2024-10-01 15:52:19 -0700 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2024-10-16 14:50:47 +0100 |
| commit | 25c17c4b55def92a01e3eecc9c775a6ee25ca20f (patch) | |
| tree | 2ce5cdf56b30e77683c9ffe80402930e14e1e413 /arch/arm64/kernel/hibernate.c | |
| parent | 9852d85ec9d492ebef56dc5f229416c925758edc (diff) | |
hugetlb: arm64: add mte support
Enable MTE support for hugetlb.
The MTE page flags will be set on the folio only. When copying
hugetlb folio (for example, CoW), the tags for all subpages will be copied
when copying the first subpage.
When freeing hugetlb folio, the MTE flags will be cleared.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Yang Shi <yang@os.amperecomputing.com>
Link: https://lore.kernel.org/r/20241001225220.271178-1-yang@os.amperecomputing.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/hibernate.c')
| -rw-r--r-- | arch/arm64/kernel/hibernate.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c index 7b11d84f533c..18749e9a6c2d 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -266,9 +266,15 @@ static int swsusp_mte_save_tags(void) max_zone_pfn = zone_end_pfn(zone); for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++) { struct page *page = pfn_to_online_page(pfn); + struct folio *folio; if (!page) continue; + folio = page_folio(page); + + if (folio_test_hugetlb(folio) && + !folio_test_hugetlb_mte_tagged(folio)) + continue; if (!page_mte_tagged(page)) continue; |