Le 04/12/2023 à 10:36, aneesh.ku...@kernel.org a écrit :
> From: "Aneesh Kumar K.V (IBM)" <aneesh.ku...@kernel.org>
> 
> This reverts commit 1abce0580b89 ("powerpc/64s: Fix __pte_needs_flush()
> false positive warning")
> 
> The previous patch dropped the usage of _PAGE_PRIVILEGED with PAGE_NONE.
> Hence this check can be dropped.
> 
> Signed-off-by: Aneesh Kumar K.V (IBM) <aneesh.ku...@kernel.org>

Reviewed-by: Christophe Leroy <christophe.le...@csgroup.eu>

> ---
>   arch/powerpc/include/asm/book3s/64/tlbflush.h | 9 ++-------
>   1 file changed, 2 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush.h 
> b/arch/powerpc/include/asm/book3s/64/tlbflush.h
> index 1950c1b825b4..fd642b729775 100644
> --- a/arch/powerpc/include/asm/book3s/64/tlbflush.h
> +++ b/arch/powerpc/include/asm/book3s/64/tlbflush.h
> @@ -158,11 +158,6 @@ static inline void flush_tlb_fix_spurious_fault(struct 
> vm_area_struct *vma,
>        */
>   }
>   
> -static inline bool __pte_protnone(unsigned long pte)
> -{
> -     return (pte & (pgprot_val(PAGE_NONE) | _PAGE_RWX)) == 
> pgprot_val(PAGE_NONE);
> -}
> -
>   static inline bool __pte_flags_need_flush(unsigned long oldval,
>                                         unsigned long newval)
>   {
> @@ -179,8 +174,8 @@ static inline bool __pte_flags_need_flush(unsigned long 
> oldval,
>       /*
>        * We do not expect kernel mappings or non-PTEs or not-present PTEs.
>        */
> -     VM_WARN_ON_ONCE(!__pte_protnone(oldval) && oldval & _PAGE_PRIVILEGED);
> -     VM_WARN_ON_ONCE(!__pte_protnone(newval) && newval & _PAGE_PRIVILEGED);
> +     VM_WARN_ON_ONCE(oldval & _PAGE_PRIVILEGED);
> +     VM_WARN_ON_ONCE(newval & _PAGE_PRIVILEGED);
>       VM_WARN_ON_ONCE(!(oldval & _PAGE_PTE));
>       VM_WARN_ON_ONCE(!(newval & _PAGE_PTE));
>       VM_WARN_ON_ONCE(!(oldval & _PAGE_PRESENT));

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