On 2/11/26 04:31, Mike Rapoport wrote:
From: "Mike Rapoport (Microsoft)" <[email protected]> Reduce 22 declarations of empty_zero_page to 3 and 23 declarations of ZERO_PAGE() to 4. Every architecture defines empty_zero_page that way or another, but for the most of them it is always a page aligned page in BSS and most definitions of ZERO_PAGE do virt_to_page(empty_zero_page). Move Linus vetted x86 definition of empty_zero_page and ZERO_PAGE() to the core MM and drop these definitions in architectures that do not implement colored zero page (MIPS and s390). ZERO_PAGE() remains a macro because turning it to a wrapper for a static inline causes severe pain in header dependencies. For the most part the change is mechanical, with these being noteworthy: * alpha: aliased empty_zero_page with ZERO_PGE that was also used for boot parameters. Switching to a generic empty_zero_page removes the aliasing and keeps ZERO_PGE for boot parameters only * arm64: uses __pa_symbol() in ZERO_PAGE() so that definition of ZERO_PAGE() is kept intact. * m68k/parisc/um: allocated empty_zero_page from memblock, although they do not support zero page coloring and having it in BSS will work fine. * sparc64 can have empty_zero_page in BSS rather allocate it, but it can't use virt_to_page() for BSS. Keep it's definition of ZERO_PAGE() but instead of allocating it, make mem_map_zero point to empty_zero_page. * sh: used empty_zero_page for boot parameters at the very early boot. Rename the parameters page to boot_params_page and let sh use the generic empty_zero_page. * hexagon: had an amusing comment about empty_zero_page /* A handy thing to have if one has the RAM. Declared in head.S */ that unfortunately had to go :) Acked-by: Helge Deller <[email protected]> # parisc Tested-by: Helge Deller <[email protected]> # parisc Reviewed-by: Christophe Leroy (CS GROUP) <[email protected]> Acked-by: Dave Hansen <[email protected]> Acked-by: Catalin Marinas <[email protected]> Signed-off-by: Mike Rapoport (Microsoft) <[email protected]> ---
arch/nios2/include/asm/pgtable.h | 7 ------- arch/nios2/kernel/head.S | 10 ---------- arch/nios2/kernel/nios2_ksyms.c | 1 -
For nios2, Acked-by: Dinh Nguyen <[email protected]>
