From aca91bfc67fe356544eb1cfc483c09b27ce49fa9 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Mon, 4 Mar 2013 21:16:18 +0100 Subject: [PATCH] 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 Link: http://lkml.kernel.org/r/1362428180-8865-4-git-send-email-bp@alien8.de Signed-off-by: H. Peter Anvin --- Documentation/x86/x86_64/mm.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt index d6498e3cd713..881582f75c9c 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