diff options
Diffstat (limited to 'arch/arm64/mm/flush.c')
| -rw-r--r-- | arch/arm64/mm/flush.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c index 2aaf950b906c..5f9379b3c8c8 100644 --- a/arch/arm64/mm/flush.c +++ b/arch/arm64/mm/flush.c @@ -52,6 +52,13 @@ void __sync_icache_dcache(pte_t pte) { struct page *page = pte_page(pte); + /* + * HugeTLB pages are always fully mapped, so only setting head page's + * PG_dcache_clean flag is enough. + */ + if (PageHuge(page)) + page = compound_head(page); + if (!test_bit(PG_dcache_clean, &page->flags)) { sync_icache_aliases((unsigned long)page_address(page), (unsigned long)page_address(page) + @@ -68,6 +75,13 @@ EXPORT_SYMBOL_GPL(__sync_icache_dcache); */ void flush_dcache_page(struct page *page) { + /* + * HugeTLB pages are always fully mapped and only head page will be + * set PG_dcache_clean (see comments in __sync_icache_dcache()). + */ + if (PageHuge(page)) + page = compound_head(page); + if (test_bit(PG_dcache_clean, &page->flags)) clear_bit(PG_dcache_clean, &page->flags); } |