path: root/Documentation/x86
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authorBorislav Petkov <bp@alien8.de>2013-03-04 20:16:18 (GMT)
committerH. Peter Anvin <hpa@linux.intel.com>2013-04-02 23:03:31 (GMT)
commitaca91bfc67fe356544eb1cfc483c09b27ce49fa9 (patch)
tree82a24117365b3cdc554260439bc353d92a29f49c /Documentation/x86
parent8e3c2a8cf647e2f3a1e9d38009b0d1c02145822f (diff)
x86-64, docs, mm: Add vsyscall range to virtual address space layout
Add the end of the virtual address space to its layout documentation. Signed-off-by: Borislav Petkov <bp@alien8.de> Link: http://lkml.kernel.org/r/1362428180-8865-4-git-send-email-bp@alien8.de Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'Documentation/x86')
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt
index d6498e3..881582f 100644
--- a/Documentation/x86/x86_64/mm.txt
+++ b/Documentation/x86/x86_64/mm.txt
@@ -13,7 +13,9 @@ ffffe90000000000 - ffffe9ffffffffff (=40 bits) hole
ffffea0000000000 - ffffeaffffffffff (=40 bits) virtual memory map (1TB)
... unused hole ...
ffffffff80000000 - ffffffffa0000000 (=512 MB) kernel text mapping, from phys 0
-ffffffffa0000000 - fffffffffff00000 (=1536 MB) module mapping space
+ffffffffa0000000 - ffffffffff5fffff (=1525 MB) module mapping space
+ffffffffff600000 - ffffffffffdfffff (=8 MB) vsyscalls
+ffffffffffe00000 - ffffffffffffffff (=2 MB) unused hole
The direct mapping covers all memory in the system up to the highest
memory address (this means in some cases it can also include PCI memory

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