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| author | Dmitry Safonov | 2017-03-06 15:17:18 +0100 |
|---|---|---|
| committer | Thomas Gleixner | 2017-03-13 14:59:22 +0100 |
| commit | 8f3e474f3cea7b2470218a6ed6da47ff02147dce (patch) | |
| tree | ffb74bdfb6bf952a893afb5425903a906eeec8ff /arch/Kconfig | |
| parent | x86/mm: Introduce arch_rnd() to compute 32/64 mmap random base (diff) | |
| download | kernel-qcow2-linux-8f3e474f3cea7b2470218a6ed6da47ff02147dce.tar.gz kernel-qcow2-linux-8f3e474f3cea7b2470218a6ed6da47ff02147dce.tar.xz kernel-qcow2-linux-8f3e474f3cea7b2470218a6ed6da47ff02147dce.zip | |
x86/mm: Add task_size parameter to mmap_base()
To correctly handle 32-bit and 64-bit mmap() syscalls in 64bit applications
its required to have separate address bases to place a mapping.
The tasksize can be used as an indicator to select the proper parameters
for mmap_base().
This requires the following changes:
- Add task_size argument to mmap_base() and make the calculation based on it.
- Provide mmap_legacy_base() as a seperate function
- Use the new functions in arch_pick_mmap_layout()
[ tglx: Massaged changelog ]
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Cc: 0x7f454c46@gmail.com
Cc: linux-mm@kvack.org
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Link: http://lkml.kernel.org/r/20170306141721.9188-3-dsafonov@virtuozzo.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/Kconfig')
0 files changed, 0 insertions, 0 deletions