linux-kernel - [PATCH] x86/mm: Fix documentation of module mapping with 4-level paging

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Message-Id: <20180402121025.10244-1-kirill.shutemov@linux.intel.com>
Date:   Mon,  2 Apr 2018 15:10:25 +0300
From:   "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:     Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     linux-kernel@...r.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>
Subject: [PATCH] x86/mm: Fix documentation of module mapping with 4-level paging

f5a40711fa58 ("x86/mm: Set MODULES_END to 0xffffffffff000000") changed
MODULES_END back to fixed value, but didn't update documentation of
memory layout for 4-level paging.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Fixes: f5a40711fa58 ("x86/mm: Set MODULES_END to 0xffffffffff000000")
Cc: Andrey Ryabinin <aryabinin@...tuozzo.com>
---
 Documentation/x86/x86_64/mm.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt
index ea91cb61a602..5432a96d31ff 100644
--- a/Documentation/x86/x86_64/mm.txt
+++ b/Documentation/x86/x86_64/mm.txt
@@ -20,7 +20,7 @@ ffffff0000000000 - ffffff7fffffffff (=39 bits) %esp fixup stacks
 ffffffef00000000 - fffffffeffffffff (=64 GB) EFI region mapping space
 ... unused hole ...
 ffffffff80000000 - ffffffff9fffffff (=512 MB)  kernel text mapping, from phys 0
-ffffffffa0000000 - [fixmap start]   (~1526 MB) module mapping space (variable)
+ffffffffa0000000 - fffffffffeffffff (1520 MB) module mapping space
 [fixmap start]   - ffffffffff5fffff kernel-internal fixmap range
 ffffffffff600000 - ffffffffff600fff (=4 kB) legacy vsyscall ABI
 ffffffffffe00000 - ffffffffffffffff (=2 MB) unused hole
-- 
2.16.2