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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


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WARNING: multiple messages have this Message-ID (diff)
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


             reply	other threads:[~2023-01-10  8:04 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-10  8:04 guoren [this message]
2023-01-10  8:04 ` [PATCH] riscv: pgtable: Fixup comment for KERN_VIRT_SIZE guoren
2023-01-10 10:21 ` Alexandre Ghiti
2023-01-10 10:21   ` Alexandre Ghiti
2023-01-25  3:48 ` Palmer Dabbelt
2023-01-25  3:48   ` Palmer Dabbelt
2023-01-25  3:50 ` patchwork-bot+linux-riscv
2023-01-25  3:50   ` patchwork-bot+linux-riscv

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