From: guoren@kernel.org
To: guoren@kernel.org, alexandre.ghiti@canonical.com, palmer@dabbelt.com
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH] riscv: pgtable: Fixup comment for KERN_VIRT_SIZE
Date: Tue, 10 Jan 2023 03:04:19 -0500 [thread overview]
Message-ID: <20230110080419.931185-1-guoren@kernel.org> (raw)
From: Guo Ren <guoren@linux.alibaba.com>
KERN_VIRT_SIZE is 1/4 of the entries of the page global directory,
not half.
Fixes: f7ae02333d13 ("riscv: Move KASAN mapping next to the kernel mapping")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Alexandre Ghiti <alexandre.ghiti@canonical.com>
---
arch/riscv/include/asm/pgtable.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 4eba9a98d0e3..2a88362dffa5 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -31,7 +31,7 @@
#define PTRS_PER_PTE (PAGE_SIZE / sizeof(pte_t))
/*
- * Half of the kernel address space (half of the entries of the page global
+ * Half of the kernel address space (1/4 of the entries of the page global
* directory) is for the direct mapping.
*/
#define KERN_VIRT_SIZE ((PTRS_PER_PGD / 2 * PGDIR_SIZE) / 2)
--
2.36.1
next reply other threads:[~2023-01-10 8:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-10 8:04 guoren [this message]
2023-01-10 10:21 ` [PATCH] riscv: pgtable: Fixup comment for KERN_VIRT_SIZE Alexandre Ghiti
2023-01-25 3:48 ` Palmer Dabbelt
2023-01-25 3:50 ` patchwork-bot+linux-riscv
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