Re: [PATCH v8 2/4] arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable

[Chintan Pandya]

On 4/27/2018 3:59 PM, Catalin Marinas wrote:
> On Tue, Apr 03, 2018 at 01:30:44PM +0530, Chintan Pandya wrote:
> > Add an interface to invalidate intermediate page tables
> > from TLB for kernel.
> >
> > Signed-off-by: Chintan Pandya <cpandya@xxxxxxxxxxxxxx>
> > ---
> >   arch/arm64/include/asm/tlbflush.h | 6 ++++++
> >   1 file changed, 6 insertions(+)
> >
> > diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
> > index 9e82dd7..6a4816d 100644
> > --- a/arch/arm64/include/asm/tlbflush.h
> > +++ b/arch/arm64/include/asm/tlbflush.h
> > @@ -209,6 +209,12 @@ static inline void __flush_tlb_pgtable(struct mm_struct *mm,
> >   	dsb(ish);
> >   }
> >   
> > +static inline void __flush_tlb_kernel_pgtable(unsigned long addr)
> > +{
> > +	addr >>= 12;
> > +	__tlbi(vaae1is, addr);
> > +	dsb(ish);
> > +}
> >   #endif
>
> Please use __TLBI_VADDR here as it does some additional masking.
Sure.

Chintan
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