[PATCH 2/3] riscv: Fixup PAGE_UP in asm/page.h

guoren
2021-05-24T16:34:02Z

From: Guo Ren <guoren@linux.alibaba.com>

Current PAGE_UP implementation is wrong. PAGE_UP(0) should be
0x1000, but current implementation will give out 0.

Although the current PAGE_UP isn't used, it will soon be used in
tlb_flush optimization.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Anup Patel <anup.patel@wdc.com>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
---
arch/riscv/include/asm/page.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index 6a7761c..c611b20 100644
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -37,7 +37,7 @@

#ifndef __ASSEMBLY__

-#define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
+#define PAGE_UP(addr) (((addr)+(PAGE_SIZE))&(~((PAGE_SIZE)-1)))
#define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1)))

/* align addr on a size boundary - adjust address up/down if needed */
--
2.7.4