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author | Ingo Molnar <mingo@kernel.org> | 2017-11-02 10:57:24 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-11-02 10:57:24 +0100 |
commit | 3357b0d3c7323d73806571192e9f633bb6ba3d54 (patch) | |
tree | a92fb225bfdda901783ad662a1fea0baddfb81e1 /arch/arm/mm/nommu.c | |
parent | 82c62fa0c49aa305104013cee4468772799bb391 (diff) | |
parent | e27c310af5c05cf876d9cad006928076c27f54d4 (diff) |
Merge branch 'x86/mpx/prep' into x86/asm
Pick up some of the MPX commits that modify the syscall entry code,
to have a common base and to reduce conflicts.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/mm/nommu.c')
-rw-r--r-- | arch/arm/mm/nommu.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index 3b8e728cc944..91537d90f5f5 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -344,6 +344,11 @@ void __init arm_mm_memblock_reserve(void) * reserved here. */ #endif + /* + * In any case, always ensure address 0 is never used as many things + * get very confused if 0 is returned as a legitimate address. + */ + memblock_reserve(0, 1); } void __init adjust_lowmem_bounds(void) |