Re: [PATCH for 5.4] powerpc/603: Always fault when _PAGE_ACCESSED is not set

[Greg KH]

On Mon, Nov 09, 2020 at 05:40:52PM +0000, Christophe Leroy wrote:
> [That is backport of 11522448e641e8f1690c9db06e01985e8e19b401 to linux 5.4]
> 
> The kernel expects pte_young() to work regardless of CONFIG_SWAP.
> 
> Make sure a minor fault is taken to set _PAGE_ACCESSED when it
> is not already set, regardless of the selection of CONFIG_SWAP.
> 
> Fixes: 84de6ab0e904 ("powerpc/603: don't handle PAGE_ACCESSED in TLB miss handlers.")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
> Link: https://lore.kernel.org/r/a44367744de54e2315b2f1a8cbbd7f88488072e0.1602342806.git.christophe.leroy@xxxxxxxxxx
> ---
>  arch/powerpc/kernel/head_32.S | 12 ------------
>  1 file changed, 12 deletions(-)

Both backports now queued up, thanks.

greg k-h