Messages in this thread Patch in this message | | | From | Bibo Mao <> | Subject | [PATCH 1/2] LoongArch: Remove zero_page_mask symbol | Date | Tue, 5 Sep 2023 16:01:46 +0800 |
| |
On LoongArch system, there is only one page for zero page, and there is no COLOR_ZERO_PAGE, so zero_page_mask is useless and macro __HAVE_COLOR_ZERO_PAGE is not necessary. This patch removes zero_page_mask and macro __HAVE_COLOR_ZERO_PAGE.
Signed-off-by: Bibo Mao <maobibo@loongson.cn> --- arch/loongarch/include/asm/pgtable.h | 4 +--- arch/loongarch/mm/init.c | 9 +-------- 2 files changed, 2 insertions(+), 11 deletions(-)
diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h index 06963a172319..342c5f9c25d2 100644 --- a/arch/loongarch/include/asm/pgtable.h +++ b/arch/loongarch/include/asm/pgtable.h @@ -71,11 +71,9 @@ struct vm_area_struct; */ extern unsigned long empty_zero_page; -extern unsigned long zero_page_mask; #define ZERO_PAGE(vaddr) \ - (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))) -#define __HAVE_COLOR_ZERO_PAGE + (virt_to_page((void *)(empty_zero_page))) /* * TLB refill handlers may also map the vmalloc area into xkvrange. diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c index 3b7d8129570b..8ec668f97b00 100644 --- a/arch/loongarch/mm/init.c +++ b/arch/loongarch/mm/init.c @@ -35,14 +35,8 @@ #include <asm/pgalloc.h> #include <asm/tlb.h> -/* - * We have up to 8 empty zeroed pages so we can map one of the right colour - * when needed. Since page is never written to after the initialization we - * don't have to care about aliases on other CPUs. - */ -unsigned long empty_zero_page, zero_page_mask; +unsigned long empty_zero_page; EXPORT_SYMBOL(empty_zero_page); -EXPORT_SYMBOL(zero_page_mask); void setup_zero_pages(void) { @@ -60,7 +54,6 @@ void setup_zero_pages(void) for (i = 0; i < (1 << order); i++, page++) mark_page_reserved(page); - zero_page_mask = ((PAGE_SIZE << order) - 1) & PAGE_MASK; } void copy_user_highpage(struct page *to, struct page *from, -- 2.27.0
| |