diff options
-rw-r--r-- | arch/riscv/include/asm/cacheflush.h | 7 | ||||
-rw-r--r-- | arch/riscv/mm/cacheflush.c | 7 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/cacheflush.h b/arch/riscv/include/asm/cacheflush.h index 8a5c246b0a21..c172d05de474 100644 --- a/arch/riscv/include/asm/cacheflush.h +++ b/arch/riscv/include/asm/cacheflush.h @@ -17,6 +17,13 @@ static inline void local_flush_icache_all(void) static inline 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 flush_icache_pte()). + */ + if (PageHuge(page)) + page = compound_head(page); + if (test_bit(PG_dcache_clean, &page->flags)) clear_bit(PG_dcache_clean, &page->flags); } diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c index 6cb7d96ad9c7..062559c04fc3 100644 --- a/arch/riscv/mm/cacheflush.c +++ b/arch/riscv/mm/cacheflush.c @@ -82,6 +82,13 @@ void flush_icache_pte(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_and_set_bit(PG_dcache_clean, &page->flags)) flush_icache_all(); } |