The patch titled
Subject: m68k: implement the new page table range API
has been added to the -mm mm-unstable branch. Its filename is
m68k-implement-the-new-page-table-range-api.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/m68k-implement-the-new-page-table-range-api.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: m68k: implement the new page table range API
Date: Mon, 10 Jul 2023 21:43:16 +0100
Add PFN_PTE_SHIFT, update_mmu_cache_range(), flush_icache_pages() and
flush_dcache_folio().
Link: https://lkml.kernel.org/r/20230710204339.3554919-16-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Tested-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Acked-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/m68k/include/asm/cacheflush_mm.h | 27 ++++++++++++++-------
arch/m68k/include/asm/mcf_pgtable.h | 1
arch/m68k/include/asm/motorola_pgtable.h | 1
arch/m68k/include/asm/pgtable_mm.h | 10 ++++---
arch/m68k/include/asm/sun3_pgtable.h | 1
arch/m68k/mm/motorola.c | 2 -
6 files changed, 28 insertions(+), 14 deletions(-)
--- a/arch/m68k/include/asm/cacheflush_mm.h~m68k-implement-the-new-page-table-range-api
+++ a/arch/m68k/include/asm/cacheflush_mm.h
@@ -220,24 +220,29 @@ static inline void flush_cache_page(stru
/* Push the page at kernel virtual address and clear the icache */
/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
-static inline void __flush_page_to_ram(void *vaddr)
+static inline void __flush_pages_to_ram(void *vaddr, unsigned int nr)
{
if (CPU_IS_COLDFIRE) {
unsigned long addr, start, end;
addr = ((unsigned long) vaddr) & ~(PAGE_SIZE - 1);
start = addr & ICACHE_SET_MASK;
- end = (addr + PAGE_SIZE - 1) & ICACHE_SET_MASK;
+ end = (addr + nr * PAGE_SIZE - 1) & ICACHE_SET_MASK;
if (start > end) {
flush_cf_bcache(0, end);
end = ICACHE_MAX_ADDR;
}
flush_cf_bcache(start, end);
} else if (CPU_IS_040_OR_060) {
- __asm__ __volatile__("nop\n\t"
- ".chip 68040\n\t"
- "cpushp %%bc,(%0)\n\t"
- ".chip 68k"
- : : "a" (__pa(vaddr)));
+ unsigned long paddr = __pa(vaddr);
+
+ do {
+ __asm__ __volatile__("nop\n\t"
+ ".chip 68040\n\t"
+ "cpushp %%bc,(%0)\n\t"
+ ".chip 68k"
+ : : "a" (paddr));
+ paddr += PAGE_SIZE;
+ } while (--nr);
} else {
unsigned long _tmp;
__asm__ __volatile__("movec %%cacr,%0\n\t"
@@ -249,10 +254,14 @@ static inline void __flush_page_to_ram(v
}
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
-#define flush_dcache_page(page) __flush_page_to_ram(page_address(page))
+#define flush_dcache_page(page) __flush_pages_to_ram(page_address(page), 1)
+#define flush_dcache_folio(folio) \
+ __flush_pages_to_ram(folio_address(folio), folio_nr_pages(folio))
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
-#define flush_icache_page(vma, page) __flush_page_to_ram(page_address(page))
+#define flush_icache_pages(vma, page, nr) \
+ __flush_pages_to_ram(page_address(page), nr)
+#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1)
extern void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
unsigned long addr, int len);
--- a/arch/m68k/include/asm/mcf_pgtable.h~m68k-implement-the-new-page-table-range-api
+++ a/arch/m68k/include/asm/mcf_pgtable.h
@@ -291,6 +291,7 @@ static inline pte_t pte_swp_clear_exclus
return pte;
}
+#define PFN_PTE_SHIFT PAGE_SHIFT
#define pmd_pfn(pmd) (pmd_val(pmd) >> PAGE_SHIFT)
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
--- a/arch/m68k/include/asm/motorola_pgtable.h~m68k-implement-the-new-page-table-range-api
+++ a/arch/m68k/include/asm/motorola_pgtable.h
@@ -112,6 +112,7 @@ static inline void pud_set(pud_t *pudp,
#define pte_present(pte) (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROTNONE))
#define pte_clear(mm,addr,ptep) ({ pte_val(*(ptep)) = 0; })
+#define PFN_PTE_SHIFT PAGE_SHIFT
#define pte_page(pte) virt_to_page(__va(pte_val(pte)))
#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT)
#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
--- a/arch/m68k/include/asm/pgtable_mm.h~m68k-implement-the-new-page-table-range-api
+++ a/arch/m68k/include/asm/pgtable_mm.h
@@ -31,8 +31,6 @@
do{ \
*(pteptr) = (pteval); \
} while(0)
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
-
/* PMD_SHIFT determines the size of the area a second-level page table can map */
#if CONFIG_PGTABLE_LEVELS == 3
@@ -138,11 +136,15 @@ extern void kernel_set_cachemode(void *a
* tables contain all the necessary information. The Sun3 does, but
* they are updated on demand.
*/
-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)
{
}
+#define update_mmu_cache(vma, addr, ptep) \
+ update_mmu_cache_range(NULL, vma, addr, ptep, 1)
+
#endif /* !__ASSEMBLY__ */
/* MMU-specific headers */
--- a/arch/m68k/include/asm/sun3_pgtable.h~m68k-implement-the-new-page-table-range-api
+++ a/arch/m68k/include/asm/sun3_pgtable.h
@@ -105,6 +105,7 @@ static inline void pte_clear (struct mm_
pte_val (*ptep) = 0;
}
+#define PFN_PTE_SHIFT 0
#define pte_pfn(pte) (pte_val(pte) & SUN3_PAGE_PGNUM_MASK)
#define pfn_pte(pfn, pgprot) \
({ pte_t __pte; pte_val(__pte) = pfn | pgprot_val(pgprot); __pte; })
--- a/arch/m68k/mm/motorola.c~m68k-implement-the-new-page-table-range-api
+++ a/arch/m68k/mm/motorola.c
@@ -81,7 +81,7 @@ static inline void cache_page(void *vadd
void mmu_page_ctor(void *page)
{
- __flush_page_to_ram(page);
+ __flush_pages_to_ram(page, 1);
flush_tlb_kernel_page(page);
nocache_page(page);
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
rmap-pass-the-folio-to-__page_check_anon_rmap.patch
minmax-add-in_range-macro.patch
mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set.patch
mm-add-generic-flush_icache_pages-and-documentation.patch
mm-add-folio_flush_mapping.patch
mm-remove-arch_implements_flush_dcache_folio.patch
mm-add-default-definition-of-set_ptes.patch
alpha-implement-the-new-page-table-range-api.patch
arc-implement-the-new-page-table-range-api.patch
arm-implement-the-new-page-table-range-api.patch
arm64-implement-the-new-page-table-range-api.patch
csky-implement-the-new-page-table-range-api.patch
hexagon-implement-the-new-page-table-range-api.patch
ia64-implement-the-new-page-table-range-api.patch
loongarch-implement-the-new-page-table-range-api.patch
m68k-implement-the-new-page-table-range-api.patch
microblaze-implement-the-new-page-table-range-api.patch
mips-implement-the-new-page-table-range-api.patch
nios2-implement-the-new-page-table-range-api.patch
openrisc-implement-the-new-page-table-range-api.patch
parisc-implement-the-new-page-table-range-api.patch
powerpc-implement-the-new-page-table-range-api.patch
riscv-implement-the-new-page-table-range-api.patch
s390-implement-the-new-page-table-range-api.patch
sh-implement-the-new-page-table-range-api.patch
sparc32-implement-the-new-page-table-range-api.patch
sparc64-implement-the-new-page-table-range-api.patch
um-implement-the-new-page-table-range-api.patch
x86-implement-the-new-page-table-range-api.patch
xtensa-implement-the-new-page-table-range-api.patch
mm-remove-page_mapping_file.patch
mm-rationalise-flush_icache_pages-and-flush_icache_page.patch
mm-tidy-up-set_ptes-definition.patch
mm-use-flush_icache_pages-in-do_set_pmd.patch
mm-call-update_mmu_cache_range-in-more-page-fault-handling-paths.patch
