From: guoren@kernel.org
To: guoren@kernel.org, anup.patel@wdc.com, palmerdabbelt@google.com,
arnd@arndb.de
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, linux-sunxi@lists.linux.dev,
Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH 2/3] riscv: Fixup PAGE_UP in asm/page.h
Date: Mon, 24 May 2021 06:51:07 +0000 [thread overview]
Message-ID: <1621839068-31738-2-git-send-email-guoren@kernel.org> (raw)
In-Reply-To: <1621839068-31738-1-git-send-email-guoren@kernel.org>
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
next prev parent reply other threads:[~2021-05-24 6:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-24 6:51 [PATCH 1/3] riscv: Fixup _PAGE_GLOBAL in _PAGE_KERNEL guoren
2021-05-24 6:51 ` guoren [this message]
2021-05-25 6:34 ` [PATCH 2/3] riscv: Fixup PAGE_UP in asm/page.h Christoph Hellwig
2021-05-25 9:28 ` Guo Ren
2021-05-25 9:34 ` Christoph Hellwig
2021-05-24 6:51 ` [PATCH 3/3] riscv: Use use_asid_allocator flush TLB guoren
2021-05-24 8:13 ` Anup Patel
2021-05-24 8:03 ` [PATCH 1/3] riscv: Fixup _PAGE_GLOBAL in _PAGE_KERNEL Anup Patel
2021-05-24 8:22 ` Guo Ren
2021-05-24 10:42 ` Anup Patel
2021-05-24 12:01 ` Guo Ren
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