From 799d8836a7c4f4327833e4a5ca952a1700acdb14 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Mon, 25 Sep 2023 20:31:33 +0200 Subject: powerpc/nohash: Refactor __ptep_set_access_flags() nohash/32 version of __ptep_set_access_flags() does the same as nohash/64 version, the only difference is that nohash/32 version is more complete and uses pte_update(). Make it common and remove the nohash/64 version. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://msgid.link/e296885df46289d3e5f4cb51efeefe593f76ef24.1695659959.git.christophe.leroy@csgroup.eu --- arch/powerpc/include/asm/nohash/pgtable.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'arch/powerpc/include/asm/nohash/pgtable.h') diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h index b974d1ab8a97..c5f21eda2a43 100644 --- a/arch/powerpc/include/asm/nohash/pgtable.h +++ b/arch/powerpc/include/asm/nohash/pgtable.h @@ -101,6 +101,23 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt pte_update(mm, addr, ptep, ~0UL, 0, 0); } +/* Set the dirty and/or accessed bits atomically in a linux PTE */ +#ifndef __ptep_set_access_flags +static inline void __ptep_set_access_flags(struct vm_area_struct *vma, + pte_t *ptep, pte_t entry, + unsigned long address, + int psize) +{ + unsigned long set = pte_val(entry) & + (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); + int huge = psize > mmu_virtual_psize ? 1 : 0; + + pte_update(vma->vm_mm, address, ptep, 0, set, huge); + + flush_tlb_page(vma, address); +} +#endif + /* Generic accessors to PTE bits */ #ifndef pte_mkwrite_novma static inline pte_t pte_mkwrite_novma(pte_t pte) -- cgit v1.2.3