Re: [PATCH RFC 05/11] mm: convert PTE table entries in ptep_get()
Alexander Gordeev <[email protected]>
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| Message-ID | <[email protected]> |
On Mon, Jul 27, 2026 at 05:46:56PM +0100, Muhammad Usama Anjum wrote: > ptep_get() now accepts a pointer to hw_pte_t storage but must continue to > return a logical pte_t value. Add __pte_from_hw() as the conversion hook > and apply it in the generic ptep_get() implementation. > > Signed-off-by: Muhammad Usama Anjum <[email protected]> > --- > include/linux/pgtable.h | 2 +- > include/linux/pgtable_types.h | 1 + > 2 files changed, 2 insertions(+), 1 deletion(-) > > diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h > index dad80d264aac2..3003ac9cd81fe 100644 > --- a/include/linux/pgtable.h > +++ b/include/linux/pgtable.h > @@ -493,7 +493,7 @@ static inline int pudp_set_access_flags(struct vm_area_struct *vma, > #ifndef ptep_get > static inline pte_t ptep_get(hw_pte_t *ptep) > { > - return READ_ONCE(*ptep); > + return READ_ONCE(__pte_from_hw(*ptep)); Should it be something like? return __pte_from_hw(READ_ONCE(*ptep)); > } > #endif > > diff --git a/include/linux/pgtable_types.h b/include/linux/pgtable_types.h > index ed5dba42a4f8c..61afe27307ec2 100644 > --- a/include/linux/pgtable_types.h > +++ b/include/linux/pgtable_types.h > @@ -6,6 +6,7 @@ > > #ifndef __HAVE_ARCH_HW_PTE_T > #define hw_pte_t pte_t > +#define __pte_from_hw(pte) (pte) > #endif > > #endif /* _LINUX_PGTABLE_TYPES_H */ > -- > 2.47.3 >