diff options
| author | Matthew Wilcox (Oracle) <[email protected]> | 2023-08-02 16:13:49 +0100 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2023-08-24 16:20:23 -0700 |
| commit | 9fee28baa601f4dbf869b1373183b312d2d5ef3d (patch) | |
| tree | 3ed28441c845919e4cd02ba1785c165bc7192c48 /arch/powerpc/include/asm/cacheflush.h | |
| parent | e70bbca607424dbb236cc641adba39c2cc0d65c5 (diff) | |
powerpc: implement the new page table range API
Add set_ptes(), update_mmu_cache_range() and flush_dcache_folio(). Change
the PG_arch_1 (aka PG_dcache_dirty) flag from being per-page to per-folio.
[[email protected]: re-export flush_dcache_icache_folio()]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Acked-by: Mike Rapoport (IBM) <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Christophe Leroy <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'arch/powerpc/include/asm/cacheflush.h')
| -rw-r--r-- | arch/powerpc/include/asm/cacheflush.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h index 7564dd4fd12b..ef7d2de33b89 100644 --- a/arch/powerpc/include/asm/cacheflush.h +++ b/arch/powerpc/include/asm/cacheflush.h @@ -35,13 +35,19 @@ static inline void flush_cache_vmap(unsigned long start, unsigned long end) * It just marks the page as not i-cache clean. We do the i-cache * flush later when the page is given to a user process, if necessary. */ -static inline void flush_dcache_page(struct page *page) +static inline void flush_dcache_folio(struct folio *folio) { if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE)) return; /* avoid an atomic op if possible */ - if (test_bit(PG_dcache_clean, &page->flags)) - clear_bit(PG_dcache_clean, &page->flags); + if (test_bit(PG_dcache_clean, &folio->flags)) + clear_bit(PG_dcache_clean, &folio->flags); +} +#define flush_dcache_folio flush_dcache_folio + +static inline void flush_dcache_page(struct page *page) +{ + flush_dcache_folio(page_folio(page)); } void flush_icache_range(unsigned long start, unsigned long stop); @@ -51,7 +57,7 @@ void flush_icache_user_page(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len); #define flush_icache_user_page flush_icache_user_page -void flush_dcache_icache_page(struct page *page); +void flush_dcache_icache_folio(struct folio *folio); /** * flush_dcache_range(): Write any modified data cache blocks out to memory and |