[v5,12/38] hexagon: Implement the new page table range API

Commit Message

Matthew Wilcox July 10, 2023, 8:43 p.m. UTC

Add PFN_PTE_SHIFT and update_mmu_cache_range().

Signed-off-by: Matthew Wilcox (Oracle) <[e-mail]>
Acked-by: Brian Cain <[e-mail]>
Acked-by: Mike Rapoport (IBM) <[e-mail]>
---
 arch/hexagon/include/asm/cacheflush.h | 8 ++++++--
 arch/hexagon/include/asm/pgtable.h    | 9 +--------
 2 files changed, 7 insertions(+), 10 deletions(-)

Patch

diff --git a/arch/hexagon/include/asm/cacheflush.h b/arch/hexagon/include/asm/cacheflush.h
index 6eff0730e6ef..dc3f500a5a01 100644
--- a/arch/hexagon/include/asm/cacheflush.h
+++ b/arch/hexagon/include/asm/cacheflush.h
@@ -58,12 +58,16 @@  extern void flush_cache_all_hexagon(void);
  * clean the cache when the PTE is set.
  *
  */
-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)
 {
 	/*  generic_ptrace_pokedata doesn't wind up here, does it?  */
 }
 
+#define update_mmu_cache(vma, addr, ptep) \
+	update_mmu_cache_range(NULL, vma, addr, ptep, 1)
+
 void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
 		       unsigned long vaddr, void *dst, void *src, int len);
 #define copy_to_user_page copy_to_user_page
diff --git a/arch/hexagon/include/asm/pgtable.h b/arch/hexagon/include/asm/pgtable.h
index 59393613d086..dd05dd71b8ec 100644
--- a/arch/hexagon/include/asm/pgtable.h
+++ b/arch/hexagon/include/asm/pgtable.h
@@ -338,6 +338,7 @@  static inline int pte_exec(pte_t pte)
 /* __swp_entry_to_pte - extract PTE from swap entry */
 #define __swp_entry_to_pte(x) ((pte_t) { (x).val })
 
+#define PFN_PTE_SHIFT	PAGE_SHIFT
 /* pfn_pte - convert page number and protection value to page table entry */
 #define pfn_pte(pfn, pgprot) __pte((pfn << PAGE_SHIFT) | pgprot_val(pgprot))
 
@@ -345,14 +346,6 @@  static inline int pte_exec(pte_t pte)
 #define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT)
 #define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
 
-/*
- * set_pte_at - update page table and do whatever magic may be
- * necessary to make the underlying hardware/firmware take note.
- *
- * VM may require a virtual instruction to alert the MMU.
- */
-#define set_pte_at(mm, addr, ptep, pte) set_pte(ptep, pte)
-
 static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 {
 	return (unsigned long)__va(pmd_val(pmd) & PAGE_MASK);