| Message ID | 20230710204339.3554919-25-willy@infradead.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | New page table range API | expand |
Hi Matthew! On Mon, 2023-07-10 at 21:43 +0100, Matthew Wilcox (Oracle) wrote: > Add PFN_PTE_SHIFT, update_mmu_cache_range(), flush_dcache_folio() and > flush_icache_pages(). Change the PG_dcache_clean flag from being > per-page to per-folio. Flush the entire folio containing the pages in > flush_icache_pages() for ease of implementation. > > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> > Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> > Cc: Yoshinori Sato <ysato@users.sourceforge.jp> > Cc: Rich Felker <dalias@libc.org> > Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> > Cc: linux-sh@vger.kernel.org > --- > arch/sh/include/asm/cacheflush.h | 21 ++++++++----- > arch/sh/include/asm/pgtable.h | 7 +++-- > arch/sh/include/asm/pgtable_32.h | 5 ++- > arch/sh/mm/cache-j2.c | 4 +-- > arch/sh/mm/cache-sh4.c | 26 +++++++++++----- > arch/sh/mm/cache-sh7705.c | 26 ++++++++++------ > arch/sh/mm/cache.c | 52 ++++++++++++++++++-------------- > arch/sh/mm/kmap.c | 3 +- > 8 files changed, 89 insertions(+), 55 deletions(-) > > diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h > index 481a664287e2..9fceef6f3e00 100644 > --- a/arch/sh/include/asm/cacheflush.h > +++ b/arch/sh/include/asm/cacheflush.h > @@ -13,9 +13,9 @@ > * - flush_cache_page(mm, vmaddr, pfn) flushes a single page > * - flush_cache_range(vma, start, end) flushes a range of pages > * > - * - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache > + * - flush_dcache_folio(folio) flushes(wback&invalidates) a folio for dcache > * - flush_icache_range(start, end) flushes(invalidates) a range for icache > - * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache > + * - flush_icache_pages(vma, pg, nr) flushes(invalidates) pages for icache > * - flush_cache_sigtramp(vaddr) flushes the signal trampoline > */ > extern void (*local_flush_cache_all)(void *args); > @@ -23,9 +23,9 @@ extern void (*local_flush_cache_mm)(void *args); > extern void (*local_flush_cache_dup_mm)(void *args); > extern void (*local_flush_cache_page)(void *args); > extern void (*local_flush_cache_range)(void *args); > -extern void (*local_flush_dcache_page)(void *args); > +extern void (*local_flush_dcache_folio)(void *args); > extern void (*local_flush_icache_range)(void *args); > -extern void (*local_flush_icache_page)(void *args); > +extern void (*local_flush_icache_folio)(void *args); > extern void (*local_flush_cache_sigtramp)(void *args); > > static inline void cache_noop(void *args) { } > @@ -42,11 +42,18 @@ extern void flush_cache_page(struct vm_area_struct *vma, > extern void flush_cache_range(struct vm_area_struct *vma, > 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)); > +} > + > extern void flush_icache_range(unsigned long start, unsigned long end); > #define flush_icache_user_range flush_icache_range > -extern void flush_icache_page(struct vm_area_struct *vma, > - struct page *page); > +void flush_icache_pages(struct vm_area_struct *vma, struct page *page, > + unsigned int nr); > +#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1) > extern void flush_cache_sigtramp(unsigned long address); > > struct flusher_data { > diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h > index 3ce30becf6df..729f5c6225fb 100644 > --- a/arch/sh/include/asm/pgtable.h > +++ b/arch/sh/include/asm/pgtable.h > @@ -102,13 +102,16 @@ extern void __update_cache(struct vm_area_struct *vma, > extern void __update_tlb(struct vm_area_struct *vma, > unsigned long address, pte_t pte); > > -static inline void > -update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep) > +static inline void update_mmu_cache_range(struct vm_fault *vmf, > + struct vm_area_struct *vma, unsigned long address, > + pte_t *ptep, unsigned int nr) > { > pte_t pte = *ptep; > __update_cache(vma, address, pte); > __update_tlb(vma, address, pte); > } > +#define update_mmu_cache(vma, addr, ptep) \ > + update_mmu_cache_range(NULL, vma, addr, ptep, 1) > > extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; > extern void paging_init(void); > diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h > index 21952b094650..676f3d4ef6ce 100644 > --- a/arch/sh/include/asm/pgtable_32.h > +++ b/arch/sh/include/asm/pgtable_32.h > @@ -307,14 +307,13 @@ static inline void set_pte(pte_t *ptep, pte_t pte) > #define set_pte(pteptr, pteval) (*(pteptr) = pteval) > #endif > > -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) > - > /* > * (pmds are folded into pgds so this doesn't get actually called, > * but the define is needed for a generic inline function.) > */ > #define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval) > > +#define PFN_PTE_SHIFT PAGE_SHIFT > #define pfn_pte(pfn, prot) \ > __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot)) > #define pfn_pmd(pfn, prot) \ > @@ -323,7 +322,7 @@ static inline void set_pte(pte_t *ptep, pte_t pte) > #define pte_none(x) (!pte_val(x)) > #define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE)) > > -#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0) > +#define pte_clear(mm, addr, ptep) set_pte(ptep, __pte(0)) > > #define pmd_none(x) (!pmd_val(x)) > #define pmd_present(x) (pmd_val(x)) > diff --git a/arch/sh/mm/cache-j2.c b/arch/sh/mm/cache-j2.c > index f277862a11f5..9ac960214380 100644 > --- a/arch/sh/mm/cache-j2.c > +++ b/arch/sh/mm/cache-j2.c > @@ -55,9 +55,9 @@ void __init j2_cache_init(void) > local_flush_cache_dup_mm = j2_flush_both; > local_flush_cache_page = j2_flush_both; > local_flush_cache_range = j2_flush_both; > - local_flush_dcache_page = j2_flush_dcache; > + local_flush_dcache_folio = j2_flush_dcache; > local_flush_icache_range = j2_flush_icache; > - local_flush_icache_page = j2_flush_icache; > + local_flush_icache_folio = j2_flush_icache; > local_flush_cache_sigtramp = j2_flush_icache; > > pr_info("Initial J2 CCR is %.8x\n", __raw_readl(j2_ccr_base)); > diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c > index 72c2e1b46c08..862046f26981 100644 > --- a/arch/sh/mm/cache-sh4.c > +++ b/arch/sh/mm/cache-sh4.c > @@ -107,19 +107,29 @@ static inline void flush_cache_one(unsigned long start, unsigned long phys) > * Write back & invalidate the D-cache of the page. > * (To avoid "alias" issues) > */ > -static void sh4_flush_dcache_page(void *arg) > +static void sh4_flush_dcache_folio(void *arg) > { > - struct page *page = arg; > - unsigned long addr = (unsigned long)page_address(page); > + struct folio *folio = arg; > #ifndef CONFIG_SMP > - struct address_space *mapping = page_mapping_file(page); > + struct address_space *mapping = folio_flush_mapping(folio); > > if (mapping && !mapping_mapped(mapping)) > - clear_bit(PG_dcache_clean, &page->flags); > + clear_bit(PG_dcache_clean, &folio->flags); > else > #endif > - flush_cache_one(CACHE_OC_ADDRESS_ARRAY | > - (addr & shm_align_mask), page_to_phys(page)); > + { > + unsigned long pfn = folio_pfn(folio); > + unsigned long addr = (unsigned long)folio_address(folio); > + unsigned int i, nr = folio_nr_pages(folio); > + > + for (i = 0; i < nr; i++) { > + flush_cache_one(CACHE_OC_ADDRESS_ARRAY | > + (addr & shm_align_mask), > + pfn * PAGE_SIZE); > + addr += PAGE_SIZE; > + pfn++; > + } > + } > > wmb(); > } > @@ -379,7 +389,7 @@ void __init sh4_cache_init(void) > __raw_readl(CCN_PRR)); > > local_flush_icache_range = sh4_flush_icache_range; > - local_flush_dcache_page = sh4_flush_dcache_page; > + local_flush_dcache_folio = sh4_flush_dcache_folio; > local_flush_cache_all = sh4_flush_cache_all; > local_flush_cache_mm = sh4_flush_cache_mm; > local_flush_cache_dup_mm = sh4_flush_cache_mm; > diff --git a/arch/sh/mm/cache-sh7705.c b/arch/sh/mm/cache-sh7705.c > index 9b63a53a5e46..b509a407588f 100644 > --- a/arch/sh/mm/cache-sh7705.c > +++ b/arch/sh/mm/cache-sh7705.c > @@ -132,15 +132,20 @@ static void __flush_dcache_page(unsigned long phys) > * Write back & invalidate the D-cache of the page. > * (To avoid "alias" issues) > */ > -static void sh7705_flush_dcache_page(void *arg) > +static void sh7705_flush_dcache_folio(void *arg) > { > - struct page *page = arg; > - struct address_space *mapping = page_mapping_file(page); > + struct folio *folio = arg; > + struct address_space *mapping = folio_flush_mapping(folio); > > if (mapping && !mapping_mapped(mapping)) > - clear_bit(PG_dcache_clean, &page->flags); > - else > - __flush_dcache_page(__pa(page_address(page))); > + clear_bit(PG_dcache_clean, &folio->flags); > + else { > + unsigned long pfn = folio_pfn(folio); > + unsigned int i, nr = folio_nr_pages(folio); > + > + for (i = 0; i < nr; i++) > + __flush_dcache_page((pfn + i) * PAGE_SIZE); > + } > } > > static void sh7705_flush_cache_all(void *args) > @@ -176,19 +181,20 @@ static void sh7705_flush_cache_page(void *args) > * Not entirely sure why this is necessary on SH3 with 32K cache but > * without it we get occasional "Memory fault" when loading a program. > */ > -static void sh7705_flush_icache_page(void *page) > +static void sh7705_flush_icache_folio(void *arg) > { > - __flush_purge_region(page_address(page), PAGE_SIZE); > + struct folio *folio = arg; > + __flush_purge_region(folio_address(folio), folio_size(folio)); > } > > void __init sh7705_cache_init(void) > { > local_flush_icache_range = sh7705_flush_icache_range; > - local_flush_dcache_page = sh7705_flush_dcache_page; > + local_flush_dcache_folio = sh7705_flush_dcache_folio; > local_flush_cache_all = sh7705_flush_cache_all; > local_flush_cache_mm = sh7705_flush_cache_all; > local_flush_cache_dup_mm = sh7705_flush_cache_all; > local_flush_cache_range = sh7705_flush_cache_all; > local_flush_cache_page = sh7705_flush_cache_page; > - local_flush_icache_page = sh7705_flush_icache_page; > + local_flush_icache_folio = sh7705_flush_icache_folio; > } > diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c > index 3aef78ceb820..9bcaa5619eab 100644 > --- a/arch/sh/mm/cache.c > +++ b/arch/sh/mm/cache.c > @@ -20,9 +20,9 @@ void (*local_flush_cache_mm)(void *args) = cache_noop; > void (*local_flush_cache_dup_mm)(void *args) = cache_noop; > void (*local_flush_cache_page)(void *args) = cache_noop; > void (*local_flush_cache_range)(void *args) = cache_noop; > -void (*local_flush_dcache_page)(void *args) = cache_noop; > +void (*local_flush_dcache_folio)(void *args) = cache_noop; > void (*local_flush_icache_range)(void *args) = cache_noop; > -void (*local_flush_icache_page)(void *args) = cache_noop; > +void (*local_flush_icache_folio)(void *args) = cache_noop; > void (*local_flush_cache_sigtramp)(void *args) = cache_noop; > > void (*__flush_wback_region)(void *start, int size); > @@ -61,15 +61,17 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page, > unsigned long vaddr, void *dst, const void *src, > unsigned long len) > { > - if (boot_cpu_data.dcache.n_aliases && page_mapcount(page) && > - test_bit(PG_dcache_clean, &page->flags)) { > + struct folio *folio = page_folio(page); > + > + if (boot_cpu_data.dcache.n_aliases && folio_mapped(folio) && > + test_bit(PG_dcache_clean, &folio->flags)) { > void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK); > memcpy(vto, src, len); > kunmap_coherent(vto); > } else { > memcpy(dst, src, len); > if (boot_cpu_data.dcache.n_aliases) > - clear_bit(PG_dcache_clean, &page->flags); > + clear_bit(PG_dcache_clean, &folio->flags); > } > > if (vma->vm_flags & VM_EXEC) > @@ -80,27 +82,30 @@ void copy_from_user_page(struct vm_area_struct *vma, struct page *page, > unsigned long vaddr, void *dst, const void *src, > unsigned long len) > { > + struct folio *folio = page_folio(page); > + > if (boot_cpu_data.dcache.n_aliases && page_mapcount(page) && > - test_bit(PG_dcache_clean, &page->flags)) { > + test_bit(PG_dcache_clean, &folio->flags)) { > void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK); > memcpy(dst, vfrom, len); > kunmap_coherent(vfrom); > } else { > memcpy(dst, src, len); > if (boot_cpu_data.dcache.n_aliases) > - clear_bit(PG_dcache_clean, &page->flags); > + clear_bit(PG_dcache_clean, &folio->flags); > } > } > > void copy_user_highpage(struct page *to, struct page *from, > unsigned long vaddr, struct vm_area_struct *vma) > { > + struct folio *src = page_folio(from); > void *vfrom, *vto; > > vto = kmap_atomic(to); > > - if (boot_cpu_data.dcache.n_aliases && page_mapcount(from) && > - test_bit(PG_dcache_clean, &from->flags)) { > + if (boot_cpu_data.dcache.n_aliases && folio_mapped(src) && > + test_bit(PG_dcache_clean, &src->flags)) { > vfrom = kmap_coherent(from, vaddr); > copy_page(vto, vfrom); > kunmap_coherent(vfrom); > @@ -136,27 +141,28 @@ EXPORT_SYMBOL(clear_user_highpage); > void __update_cache(struct vm_area_struct *vma, > unsigned long address, pte_t pte) > { > - struct page *page; > unsigned long pfn = pte_pfn(pte); > > if (!boot_cpu_data.dcache.n_aliases) > return; > > - page = pfn_to_page(pfn); > if (pfn_valid(pfn)) { > - int dirty = !test_and_set_bit(PG_dcache_clean, &page->flags); > + struct folio *folio = page_folio(pfn_to_page(pfn)); > + int dirty = !test_and_set_bit(PG_dcache_clean, &folio->flags); > if (dirty) > - __flush_purge_region(page_address(page), PAGE_SIZE); > + __flush_purge_region(folio_address(folio), > + folio_size(folio)); > } > } > > void __flush_anon_page(struct page *page, unsigned long vmaddr) > { > + struct folio *folio = page_folio(page); > unsigned long addr = (unsigned long) page_address(page); > > if (pages_do_alias(addr, vmaddr)) { > - if (boot_cpu_data.dcache.n_aliases && page_mapcount(page) && > - test_bit(PG_dcache_clean, &page->flags)) { > + if (boot_cpu_data.dcache.n_aliases && folio_mapped(folio) && > + test_bit(PG_dcache_clean, &folio->flags)) { > void *kaddr; > > kaddr = kmap_coherent(page, vmaddr); > @@ -164,7 +170,8 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr) > /* __flush_purge_region((void *)kaddr, PAGE_SIZE); */ > kunmap_coherent(kaddr); > } else > - __flush_purge_region((void *)addr, PAGE_SIZE); > + __flush_purge_region(folio_address(folio), > + folio_size(folio)); > } > } > > @@ -215,11 +222,11 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start, > } > EXPORT_SYMBOL(flush_cache_range); > > -void flush_dcache_page(struct page *page) > +void flush_dcache_folio(struct folio *folio) > { > - cacheop_on_each_cpu(local_flush_dcache_page, page, 1); > + cacheop_on_each_cpu(local_flush_dcache_folio, folio, 1); > } > -EXPORT_SYMBOL(flush_dcache_page); > +EXPORT_SYMBOL(flush_dcache_folio); > > void flush_icache_range(unsigned long start, unsigned long end) > { > @@ -233,10 +240,11 @@ void flush_icache_range(unsigned long start, unsigned long end) > } > EXPORT_SYMBOL(flush_icache_range); > > -void flush_icache_page(struct vm_area_struct *vma, struct page *page) > +void flush_icache_pages(struct vm_area_struct *vma, struct page *page, > + unsigned int nr) > { > - /* Nothing uses the VMA, so just pass the struct page along */ > - cacheop_on_each_cpu(local_flush_icache_page, page, 1); > + /* Nothing uses the VMA, so just pass the folio along */ > + cacheop_on_each_cpu(local_flush_icache_folio, page_folio(page), 1); > } > > void flush_cache_sigtramp(unsigned long address) > diff --git a/arch/sh/mm/kmap.c b/arch/sh/mm/kmap.c > index 73fd7cc99430..fa50e8f6e7a9 100644 > --- a/arch/sh/mm/kmap.c > +++ b/arch/sh/mm/kmap.c > @@ -27,10 +27,11 @@ void __init kmap_coherent_init(void) > > void *kmap_coherent(struct page *page, unsigned long addr) > { > + struct folio *folio = page_folio(page); > enum fixed_addresses idx; > unsigned long vaddr; > > - BUG_ON(!test_bit(PG_dcache_clean, &page->flags)); > + BUG_ON(!test_bit(PG_dcache_clean, &folio->flags)); > > preempt_disable(); > pagefault_disable(); What's the best way to test this? Just build Andrew's kernel? I would like to give it a go on my SH7785LCR to be sure nothing breaks. Adrian
On 7/11/2023 12:00 PM, John Paul Adrian Glaubitz wrote: > What's the best way to test this? Just build Andrew's kernel? I didn't see the patchset shown on: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/log/?h=mm-unstable yet. I believe the patchset will be in mm-unstable soon. From the cover letter: The point of all this is better performance, and Fengwei Yin has measured improvement on x86. I suspect you'll see improvement on your architecture too. Try the new will-it-scale test mentioned here: https://lore.kernel.org/linux-mm/20230206140639.538867-5-fengwei.yin@intel.com/ You'll need to run it on an XFS filesystem and have CONFIG_TRANSPARENT_HUGEPAGE set. It's for performance testing. For functionality, I used: - System boot/reboot. - Using browser to access internet, Thunderbird to check email. - Build kernel. Regards Yin, Fengwei > > I would like to give it a go on my SH7785LCR to be sure nothing breaks.
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h index 481a664287e2..9fceef6f3e00 100644 --- a/arch/sh/include/asm/cacheflush.h +++ b/arch/sh/include/asm/cacheflush.h @@ -13,9 +13,9 @@ * - flush_cache_page(mm, vmaddr, pfn) flushes a single page * - flush_cache_range(vma, start, end) flushes a range of pages * - * - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache + * - flush_dcache_folio(folio) flushes(wback&invalidates) a folio for dcache * - flush_icache_range(start, end) flushes(invalidates) a range for icache - * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache + * - flush_icache_pages(vma, pg, nr) flushes(invalidates) pages for icache * - flush_cache_sigtramp(vaddr) flushes the signal trampoline */ extern void (*local_flush_cache_all)(void *args); @@ -23,9 +23,9 @@ extern void (*local_flush_cache_mm)(void *args); extern void (*local_flush_cache_dup_mm)(void *args); extern void (*local_flush_cache_page)(void *args); extern void (*local_flush_cache_range)(void *args); -extern void (*local_flush_dcache_page)(void *args); +extern void (*local_flush_dcache_folio)(void *args); extern void (*local_flush_icache_range)(void *args); -extern void (*local_flush_icache_page)(void *args); +extern void (*local_flush_icache_folio)(void *args); extern void (*local_flush_cache_sigtramp)(void *args); static inline void cache_noop(void *args) { } @@ -42,11 +42,18 @@ extern void flush_cache_page(struct vm_area_struct *vma, extern void flush_cache_range(struct vm_area_struct *vma, 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)); +} + extern void flush_icache_range(unsigned long start, unsigned long end); #define flush_icache_user_range flush_icache_range -extern void flush_icache_page(struct vm_area_struct *vma, - struct page *page); +void flush_icache_pages(struct vm_area_struct *vma, struct page *page, + unsigned int nr); +#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1) extern void flush_cache_sigtramp(unsigned long address); struct flusher_data { diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h index 3ce30becf6df..729f5c6225fb 100644 --- a/arch/sh/include/asm/pgtable.h +++ b/arch/sh/include/asm/pgtable.h @@ -102,13 +102,16 @@ extern void __update_cache(struct vm_area_struct *vma, extern void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte); -static inline void -update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep) +static inline void update_mmu_cache_range(struct vm_fault *vmf, + struct vm_area_struct *vma, unsigned long address, + pte_t *ptep, unsigned int nr) { pte_t pte = *ptep; __update_cache(vma, address, pte); __update_tlb(vma, address, pte); } +#define update_mmu_cache(vma, addr, ptep) \ + update_mmu_cache_range(NULL, vma, addr, ptep, 1) extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; extern void paging_init(void); diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h index 21952b094650..676f3d4ef6ce 100644 --- a/arch/sh/include/asm/pgtable_32.h +++ b/arch/sh/include/asm/pgtable_32.h @@ -307,14 +307,13 @@ static inline void set_pte(pte_t *ptep, pte_t pte) #define set_pte(pteptr, pteval) (*(pteptr) = pteval) #endif -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) - /* * (pmds are folded into pgds so this doesn't get actually called, * but the define is needed for a generic inline function.) */ #define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval) +#define PFN_PTE_SHIFT PAGE_SHIFT #define pfn_pte(pfn, prot) \ __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot)) #define pfn_pmd(pfn, prot) \ @@ -323,7 +322,7 @@ static inline void set_pte(pte_t *ptep, pte_t pte) #define pte_none(x) (!pte_val(x)) #define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE)) -#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0) +#define pte_clear(mm, addr, ptep) set_pte(ptep, __pte(0)) #define pmd_none(x) (!pmd_val(x)) #define pmd_present(x) (pmd_val(x)) diff --git a/arch/sh/mm/cache-j2.c b/arch/sh/mm/cache-j2.c index f277862a11f5..9ac960214380 100644 --- a/arch/sh/mm/cache-j2.c +++ b/arch/sh/mm/cache-j2.c @@ -55,9 +55,9 @@ void __init j2_cache_init(void) local_flush_cache_dup_mm = j2_flush_both; local_flush_cache_page = j2_flush_both; local_flush_cache_range = j2_flush_both; - local_flush_dcache_page = j2_flush_dcache; + local_flush_dcache_folio = j2_flush_dcache; local_flush_icache_range = j2_flush_icache; - local_flush_icache_page = j2_flush_icache; + local_flush_icache_folio = j2_flush_icache; local_flush_cache_sigtramp = j2_flush_icache; pr_info("Initial J2 CCR is %.8x\n", __raw_readl(j2_ccr_base)); diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c index 72c2e1b46c08..862046f26981 100644 --- a/arch/sh/mm/cache-sh4.c +++ b/arch/sh/mm/cache-sh4.c @@ -107,19 +107,29 @@ static inline void flush_cache_one(unsigned long start, unsigned long phys) * Write back & invalidate the D-cache of the page. * (To avoid "alias" issues) */ -static void sh4_flush_dcache_page(void *arg) +static void sh4_flush_dcache_folio(void *arg) { - struct page *page = arg; - unsigned long addr = (unsigned long)page_address(page); + struct folio *folio = arg; #ifndef CONFIG_SMP - struct address_space *mapping = page_mapping_file(page); + struct address_space *mapping = folio_flush_mapping(folio); if (mapping && !mapping_mapped(mapping)) - clear_bit(PG_dcache_clean, &page->flags); + clear_bit(PG_dcache_clean, &folio->flags); else #endif - flush_cache_one(CACHE_OC_ADDRESS_ARRAY | - (addr & shm_align_mask), page_to_phys(page)); + { + unsigned long pfn = folio_pfn(folio); + unsigned long addr = (unsigned long)folio_address(folio); + unsigned int i, nr = folio_nr_pages(folio); + + for (i = 0; i < nr; i++) { + flush_cache_one(CACHE_OC_ADDRESS_ARRAY | + (addr & shm_align_mask), + pfn * PAGE_SIZE); + addr += PAGE_SIZE; + pfn++; + } + } wmb(); } @@ -379,7 +389,7 @@ void __init sh4_cache_init(void) __raw_readl(CCN_PRR)); local_flush_icache_range = sh4_flush_icache_range; - local_flush_dcache_page = sh4_flush_dcache_page; + local_flush_dcache_folio = sh4_flush_dcache_folio; local_flush_cache_all = sh4_flush_cache_all; local_flush_cache_mm = sh4_flush_cache_mm; local_flush_cache_dup_mm = sh4_flush_cache_mm; diff --git a/arch/sh/mm/cache-sh7705.c b/arch/sh/mm/cache-sh7705.c index 9b63a53a5e46..b509a407588f 100644 --- a/arch/sh/mm/cache-sh7705.c +++ b/arch/sh/mm/cache-sh7705.c @@ -132,15 +132,20 @@ static void __flush_dcache_page(unsigned long phys) * Write back & invalidate the D-cache of the page. * (To avoid "alias" issues) */ -static void sh7705_flush_dcache_page(void *arg) +static void sh7705_flush_dcache_folio(void *arg) { - struct page *page = arg; - struct address_space *mapping = page_mapping_file(page); + struct folio *folio = arg; + struct address_space *mapping = folio_flush_mapping(folio); if (mapping && !mapping_mapped(mapping)) - clear_bit(PG_dcache_clean, &page->flags); - else - __flush_dcache_page(__pa(page_address(page))); + clear_bit(PG_dcache_clean, &folio->flags); + else { + unsigned long pfn = folio_pfn(folio); + unsigned int i, nr = folio_nr_pages(folio); + + for (i = 0; i < nr; i++) + __flush_dcache_page((pfn + i) * PAGE_SIZE); + } } static void sh7705_flush_cache_all(void *args) @@ -176,19 +181,20 @@ static void sh7705_flush_cache_page(void *args) * Not entirely sure why this is necessary on SH3 with 32K cache but * without it we get occasional "Memory fault" when loading a program. */ -static void sh7705_flush_icache_page(void *page) +static void sh7705_flush_icache_folio(void *arg) { - __flush_purge_region(page_address(page), PAGE_SIZE); + struct folio *folio = arg; + __flush_purge_region(folio_address(folio), folio_size(folio)); } void __init sh7705_cache_init(void) { local_flush_icache_range = sh7705_flush_icache_range; - local_flush_dcache_page = sh7705_flush_dcache_page; + local_flush_dcache_folio = sh7705_flush_dcache_folio; local_flush_cache_all = sh7705_flush_cache_all; local_flush_cache_mm = sh7705_flush_cache_all; local_flush_cache_dup_mm = sh7705_flush_cache_all; local_flush_cache_range = sh7705_flush_cache_all; local_flush_cache_page = sh7705_flush_cache_page; - local_flush_icache_page = sh7705_flush_icache_page; + local_flush_icache_folio = sh7705_flush_icache_folio; } diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c index 3aef78ceb820..9bcaa5619eab 100644 --- a/arch/sh/mm/cache.c +++ b/arch/sh/mm/cache.c @@ -20,9 +20,9 @@ void (*local_flush_cache_mm)(void *args) = cache_noop; void (*local_flush_cache_dup_mm)(void *args) = cache_noop; void (*local_flush_cache_page)(void *args) = cache_noop; void (*local_flush_cache_range)(void *args) = cache_noop; -void (*local_flush_dcache_page)(void *args) = cache_noop; +void (*local_flush_dcache_folio)(void *args) = cache_noop; void (*local_flush_icache_range)(void *args) = cache_noop; -void (*local_flush_icache_page)(void *args) = cache_noop; +void (*local_flush_icache_folio)(void *args) = cache_noop; void (*local_flush_cache_sigtramp)(void *args) = cache_noop; void (*__flush_wback_region)(void *start, int size); @@ -61,15 +61,17 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len) { - if (boot_cpu_data.dcache.n_aliases && page_mapcount(page) && - test_bit(PG_dcache_clean, &page->flags)) { + struct folio *folio = page_folio(page); + + if (boot_cpu_data.dcache.n_aliases && folio_mapped(folio) && + test_bit(PG_dcache_clean, &folio->flags)) { void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK); memcpy(vto, src, len); kunmap_coherent(vto); } else { memcpy(dst, src, len); if (boot_cpu_data.dcache.n_aliases) - clear_bit(PG_dcache_clean, &page->flags); + clear_bit(PG_dcache_clean, &folio->flags); } if (vma->vm_flags & VM_EXEC) @@ -80,27 +82,30 @@ void copy_from_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len) { + struct folio *folio = page_folio(page); + if (boot_cpu_data.dcache.n_aliases && page_mapcount(page) && - test_bit(PG_dcache_clean, &page->flags)) { + test_bit(PG_dcache_clean, &folio->flags)) { void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK); memcpy(dst, vfrom, len); kunmap_coherent(vfrom); } else { memcpy(dst, src, len); if (boot_cpu_data.dcache.n_aliases) - clear_bit(PG_dcache_clean, &page->flags); + clear_bit(PG_dcache_clean, &folio->flags); } } void copy_user_highpage(struct page *to, struct page *from, unsigned long vaddr, struct vm_area_struct *vma) { + struct folio *src = page_folio(from); void *vfrom, *vto; vto = kmap_atomic(to); - if (boot_cpu_data.dcache.n_aliases && page_mapcount(from) && - test_bit(PG_dcache_clean, &from->flags)) { + if (boot_cpu_data.dcache.n_aliases && folio_mapped(src) && + test_bit(PG_dcache_clean, &src->flags)) { vfrom = kmap_coherent(from, vaddr); copy_page(vto, vfrom); kunmap_coherent(vfrom); @@ -136,27 +141,28 @@ EXPORT_SYMBOL(clear_user_highpage); void __update_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte) { - struct page *page; unsigned long pfn = pte_pfn(pte); if (!boot_cpu_data.dcache.n_aliases) return; - page = pfn_to_page(pfn); if (pfn_valid(pfn)) { - int dirty = !test_and_set_bit(PG_dcache_clean, &page->flags); + struct folio *folio = page_folio(pfn_to_page(pfn)); + int dirty = !test_and_set_bit(PG_dcache_clean, &folio->flags); if (dirty) - __flush_purge_region(page_address(page), PAGE_SIZE); + __flush_purge_region(folio_address(folio), + folio_size(folio)); } } void __flush_anon_page(struct page *page, unsigned long vmaddr) { + struct folio *folio = page_folio(page); unsigned long addr = (unsigned long) page_address(page); if (pages_do_alias(addr, vmaddr)) { - if (boot_cpu_data.dcache.n_aliases && page_mapcount(page) && - test_bit(PG_dcache_clean, &page->flags)) { + if (boot_cpu_data.dcache.n_aliases && folio_mapped(folio) && + test_bit(PG_dcache_clean, &folio->flags)) { void *kaddr; kaddr = kmap_coherent(page, vmaddr); @@ -164,7 +170,8 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr) /* __flush_purge_region((void *)kaddr, PAGE_SIZE); */ kunmap_coherent(kaddr); } else - __flush_purge_region((void *)addr, PAGE_SIZE); + __flush_purge_region(folio_address(folio), + folio_size(folio)); } } @@ -215,11 +222,11 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start, } EXPORT_SYMBOL(flush_cache_range); -void flush_dcache_page(struct page *page) +void flush_dcache_folio(struct folio *folio) { - cacheop_on_each_cpu(local_flush_dcache_page, page, 1); + cacheop_on_each_cpu(local_flush_dcache_folio, folio, 1); } -EXPORT_SYMBOL(flush_dcache_page); +EXPORT_SYMBOL(flush_dcache_folio); void flush_icache_range(unsigned long start, unsigned long end) { @@ -233,10 +240,11 @@ void flush_icache_range(unsigned long start, unsigned long end) } EXPORT_SYMBOL(flush_icache_range); -void flush_icache_page(struct vm_area_struct *vma, struct page *page) +void flush_icache_pages(struct vm_area_struct *vma, struct page *page, + unsigned int nr) { - /* Nothing uses the VMA, so just pass the struct page along */ - cacheop_on_each_cpu(local_flush_icache_page, page, 1); + /* Nothing uses the VMA, so just pass the folio along */ + cacheop_on_each_cpu(local_flush_icache_folio, page_folio(page), 1); } void flush_cache_sigtramp(unsigned long address) diff --git a/arch/sh/mm/kmap.c b/arch/sh/mm/kmap.c index 73fd7cc99430..fa50e8f6e7a9 100644 --- a/arch/sh/mm/kmap.c +++ b/arch/sh/mm/kmap.c @@ -27,10 +27,11 @@ void __init kmap_coherent_init(void) void *kmap_coherent(struct page *page, unsigned long addr) { + struct folio *folio = page_folio(page); enum fixed_addresses idx; unsigned long vaddr; - BUG_ON(!test_bit(PG_dcache_clean, &page->flags)); + BUG_ON(!test_bit(PG_dcache_clean, &folio->flags)); preempt_disable(); pagefault_disable();