On Tue, Oct 6, 2020 at 5:48 AM Atish Patra <[email protected]> wrote: > > From: Greentime Hu <[email protected]> > > These two functions are used to distinguish between PROT_NONENUMA > protections and hinting fault protections. > > Signed-off-by: Greentime Hu <[email protected]> > --- > arch/riscv/include/asm/pgtable.h | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/arch/riscv/include/asm/pgtable.h > b/arch/riscv/include/asm/pgtable.h > index 515b42f98d34..2751110675e6 100644 > --- a/arch/riscv/include/asm/pgtable.h > +++ b/arch/riscv/include/asm/pgtable.h > @@ -183,6 +183,11 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd) > return (unsigned long)pfn_to_virt(pmd_val(pmd) >> _PAGE_PFN_SHIFT); > } > > +static inline pte_t pmd_pte(pmd_t pmd) > +{ > + return __pte(pmd_val(pmd)); > +} > + > /* Yields the page frame number (PFN) of a page table entry */ > static inline unsigned long pte_pfn(pte_t pte) > { > @@ -286,6 +291,21 @@ static inline pte_t pte_mkhuge(pte_t pte) > return pte; > } > > +#ifdef CONFIG_NUMA_BALANCING > +/* > + * See the comment in include/asm-generic/pgtable.h > + */ > +static inline int pte_protnone(pte_t pte) > +{ > + return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROT_NONE)) == > _PAGE_PROT_NONE; > +} > + > +static inline int pmd_protnone(pmd_t pmd) > +{ > + return pte_protnone(pmd_pte(pmd)); > +} > +#endif > + > /* Modify page protection bits */ > static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) > { > -- > 2.25.1 >
Looks good to me. Reviewed-by: Anup Patel <[email protected]> Regards, Anup
