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sparc64: implement the new page table range API

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Add set_ptes(), update_mmu_cache_range(), flush_dcache_folio() and
flush_icache_pages().  Convert the PG_dcache_dirty flag from being
per-page to per-folio.

Link: https://lkml.kernel.org/r/20230802151406.3735276-27-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2023-08-02 16:13:54 +01:00
committed by Andrew Morton
parent 665f640294
commit 1a10a44dfc
5 changed files with 119 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/sparc/include/asm/cacheflush_64.h
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@@ -35,20 +35,26 @@ void flush_icache_range(unsigned long start, unsigned long end);
void __flush_icache_page(unsigned long);
void __flush_dcache_page(void *addr, int flush_icache);
void flush_dcache_page_impl(struct page *page);
void flush_dcache_folio_impl(struct folio *folio);
#ifdef CONFIG_SMP
void smp_flush_dcache_page_impl(struct page *page, int cpu);
void flush_dcache_page_all(struct mm_struct *mm, struct page *page);
void smp_flush_dcache_folio_impl(struct folio *folio, int cpu);
void flush_dcache_folio_all(struct mm_struct *mm, struct folio *folio);
#else
#define smp_flush_dcache_page_impl(page,cpu) flush_dcache_page_impl(page)
#define flush_dcache_page_all(mm,page) flush_dcache_page_impl(page)
#define smp_flush_dcache_folio_impl(folio, cpu) flush_dcache_folio_impl(folio)
#define flush_dcache_folio_all(mm, folio) flush_dcache_folio_impl(folio)
#endif
void __flush_dcache_range(unsigned long start, unsigned long end);
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
void flush_dcache_page(struct page *page);
void flush_dcache_folio(struct folio *folio);
#define flush_dcache_folio flush_dcache_folio
static inline void flush_dcache_page(struct page *page)
{
flush_dcache_folio(page_folio(page));
}
#define flush_icache_page(vma, pg) do { } while(0)
#define flush_icache_pages(vma, pg, nr) do { } while(0)
void flush_ptrace_access(struct vm_area_struct *, struct page *,
unsigned long uaddr, void *kaddr,