linux-kernel - [PATCH] x86/mm: Fix copy&paste error in comments

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Date:   Tue, 20 Apr 2021 13:34:32 +0800
From:   Cao jin <jojing64@...il.com>
To:     x86@...nel.org, linux-kernel@...r.kernel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        dave.hansen@...ux.intel.com, luto@...nel.org, peterz@...radead.org,
        Cao jin <jojing64@...il.com>
Subject: [PATCH] x86/mm: Fix copy&paste error in comments

Direct page mapping in bottom-up way will allocate memory from low
address for page structures in a range, which is the *bottom*,
not the *end*.

Signed-off-by: Cao jin <jojing64@...il.com>
---
 arch/x86/mm/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index e26f5c5c6565..bc2f871c75f1 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -663,7 +663,7 @@ static void __init memory_map_bottom_up(unsigned long map_start,
 	/*
 	 * We start from the bottom (@map_start) and go to the top (@map_end).
 	 * The memblock_find_in_range() gets us a block of RAM from the
-	 * end of RAM in [min_pfn_mapped, max_pfn_mapped) used as new pages
+	 * bottom of RAM in [min_pfn_mapped, max_pfn_mapped) used as new pages
 	 * for page table.
 	 */
 	while (start < map_end) {
-- 
2.30.1