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| author | Thomas Gleixner <tglx@linutronix.de> | 2018-01-04 13:01:40 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-01-04 23:04:57 +0100 |
| commit | f2078904810373211fb15f91888fba14c01a4acc (patch) | |
| tree | 3e0cb3a579766be68d3ea9d8309b5b36a1f2c9d8 /Documentation/x86/x86_64 | |
| parent | f5a40711fa58f1c109165a4fec6078bf2dfd2bdc (diff) | |
| download | linux-f2078904810373211fb15f91888fba14c01a4acc.tar.gz linux-f2078904810373211fb15f91888fba14c01a4acc.tar.bz2 linux-f2078904810373211fb15f91888fba14c01a4acc.zip | |
x86/mm: Map cpu_entry_area at the same place on 4/5 level
There is no reason for 4 and 5 level pagetables to have a different
layout. It just makes determining vaddr_end for KASLR harder than
necessary.
Fixes: 92a0f81d8957 ("x86/cpu_entry_area: Move it out of the fixmap")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Benjamin Gilbert <benjamin.gilbert@coreos.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable <stable@vger.kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Garnier <thgarnie@google.com>,
Cc: Alexander Kuleshov <kuleshovmail@gmail.com>
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801041320360.1771@nanos
Diffstat (limited to 'Documentation/x86/x86_64')
| -rw-r--r-- | Documentation/x86/x86_64/mm.txt | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt index ddd5ffd31bd0..f7dabe1f01e9 100644 --- a/Documentation/x86/x86_64/mm.txt +++ b/Documentation/x86/x86_64/mm.txt @@ -12,8 +12,8 @@ ffffea0000000000 - ffffeaffffffffff (=40 bits) virtual memory map (1TB) ... unused hole ... ffffec0000000000 - fffffbffffffffff (=44 bits) kasan shadow memory (16TB) ... unused hole ... -fffffe0000000000 - fffffe7fffffffff (=39 bits) LDT remap for PTI -fffffe8000000000 - fffffeffffffffff (=39 bits) cpu_entry_area mapping +fffffe0000000000 - fffffe7fffffffff (=39 bits) cpu_entry_area mapping +fffffe8000000000 - fffffeffffffffff (=39 bits) LDT remap for PTI ffffff0000000000 - ffffff7fffffffff (=39 bits) %esp fixup stacks ... unused hole ... ffffffef00000000 - fffffffeffffffff (=64 GB) EFI region mapping space @@ -37,7 +37,8 @@ ffd4000000000000 - ffd5ffffffffffff (=49 bits) virtual memory map (512TB) ... unused hole ... ffdf000000000000 - fffffc0000000000 (=53 bits) kasan shadow memory (8PB) ... unused hole ... -fffffe8000000000 - fffffeffffffffff (=39 bits) cpu_entry_area mapping +fffffe0000000000 - fffffe7fffffffff (=39 bits) cpu_entry_area mapping +... unused hole ... ffffff0000000000 - ffffff7fffffffff (=39 bits) %esp fixup stacks ... unused hole ... ffffffef00000000 - fffffffeffffffff (=64 GB) EFI region mapping space |