[PATCH v3 1/5] powerpc/mm: set the radix linear page mapping size
Benjamin Herrenschmidt
benh at kernel.crashing.org
Tue Dec 20 07:53:47 AEDT 2016
On Mon, 2016-12-19 at 14:28 +0530, Aneesh Kumar K.V wrote:
> Reza Arbab <arbab at linux.vnet.ibm.com> writes:
>
> > This was defaulting to 4K, regardless of PAGE_SIZE.
> >
> > Signed-off-by: Reza Arbab <arbab at linux.vnet.ibm.com>
> > ---
> > arch/powerpc/mm/pgtable-radix.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/arch/powerpc/mm/pgtable-radix.c
> > b/arch/powerpc/mm/pgtable-radix.c
> > index 623a0dc..54bd70e 100644
> > --- a/arch/powerpc/mm/pgtable-radix.c
> > +++ b/arch/powerpc/mm/pgtable-radix.c
> > @@ -351,8 +351,10 @@ void __init radix__early_init_mmu(void)
> > #ifdef CONFIG_PPC_64K_PAGES
> > /* PAGE_SIZE mappings */
> > mmu_virtual_psize = MMU_PAGE_64K;
> > + mmu_linear_psize = MMU_PAGE_64K;
>
> That is not clearly correct, we map the linear address with either
> 64K,
> 2M or 1G depending on the memory available. Take a look at
> static void __init radix_init_pgtable(void)
>
So should we fix that initialization regardless or take it out ?
>
> > #else
> > mmu_virtual_psize = MMU_PAGE_4K;
> > + mmu_linear_psize = MMU_PAGE_4K;
> > #endif
> >
> > #ifdef CONFIG_SPARSEMEM_VMEMMAP
> > --
> > 1.8.3.1
More information about the Linuxppc-dev
mailing list