Re: [PATCH] mm/special: Create generic fallbacks for pte_special() and pte_mkspecial()

[Helge Deller <deller@xxxxxx>]

On 02.03.20 02:56, Anshuman Khandual wrote:
> Currently there are many platforms that dont enable HAVE_ARCH_PTE_SPECIAL
> but required to define quite similar fallback stubs for special page table
> entry helpers such as pte_special() and pte_mkspecial(), as they get build
> in generic MM without a config check. This creates two generic fallback
> stub definitions for these helpers, eliminating much code duplication.
>
> mips platform has a special case where pte_special() and pte_mkspecial()
> visibility is wider than what HAVE_ARCH_PTE_SPECIAL enablement requires.
> This restricts those symbol visibility in order to avoid redefinitions
> which is now exposed through this new generic stubs and subsequent build
> failure. arm platform set_pte_at() definition needs to be moved into a C
> file just to prevent a build failure.
>
> Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>

for parisc:

Acked-by: Helge Deller <deller@xxxxxx> # parisc

Helge