From: Guo Ren <guoren@linux.alibaba.com>
Date: Tue, 10 Jan 2023 08:04:19 +0000 (-0500)
Subject: riscv: pgtable: Fixup comment for KERN_VIRT_SIZE
X-Git-Tag: v6.6.17~5433^2~27
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6be1ff430dab9fc047762b10b2c9669399ea1f37;p=platform%2Fkernel%2Flinux-rpi.git

riscv: pgtable: Fixup comment for KERN_VIRT_SIZE

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>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230110080419.931185-1-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
---

diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 4eba9a9..2a88362 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)