Commit d0ba9612 authored by Anshuman Khandual's avatar Anshuman Khandual Committed by Will Deacon
Browse files

arm64/mm: Add pte_rdonly() helper 



This replaces open coding PTE_RDONLY check with a new helper pte_rdonly().
No functional change is intended here.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20230713092004.693749-1-anshuman.khandual@arm.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 62ce7af9

arch/arm64/include/asm/pgtable.h

+2 −1
Original line number Diff line number Diff line
@@ -103,6 +103,7 @@ static inline pteval_t __phys_to_pte_val(phys_addr_t phys) 
#define pte_young(pte)		(!!(pte_val(pte) & PTE_AF))

#define pte_special(pte)	(!!(pte_val(pte) & PTE_SPECIAL))

#define pte_write(pte)		(!!(pte_val(pte) & PTE_WRITE))

#define pte_rdonly(pte)		(!!(pte_val(pte) & PTE_RDONLY))

#define pte_user(pte)		(!!(pte_val(pte) & PTE_USER))

#define pte_user_exec(pte)	(!(pte_val(pte) & PTE_UXN))

#define pte_cont(pte)		(!!(pte_val(pte) & PTE_CONT))
@@ -120,7 +121,7 @@ static inline pteval_t __phys_to_pte_val(phys_addr_t phys) 
	(__boundary - 1 < (end) - 1) ? __boundary : (end);			\

})



#define pte_hw_dirty(pte)	(pte_write(pte) && !(pte_val(pte) & PTE_RDONLY))

#define pte_hw_dirty(pte)	(pte_write(pte) && !pte_rdonly(pte))

#define pte_sw_dirty(pte)	(!!(pte_val(pte) & PTE_DIRTY))

#define pte_dirty(pte)		(pte_sw_dirty(pte) || pte_hw_dirty(pte))