diff options
| author | Anton Blanchard <anton@samba.org> | 2009-02-22 01:50:03 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-23 15:53:20 +1100 |
| commit | d839088caec6891a5070f0b1ce61031e458533a9 (patch) | |
| tree | a0489611eb3edce545f7aed98764220e195ef941 /fs/nls/nls_cp1250.c | |
| parent | 2dadb987e09995b2910c419cdfe2307e66537649 (diff) | |
powerpc: Randomise lower bits of stack address
Randomise the lower bits of the stack address. More randomisation is good for
security but the scatter can also help with SMT threads that share an L1. A
quick test case shows this working:
int main()
{
int sp;
printf("%x\n", (unsigned long)&sp & 4095);
}
before:
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after:
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d80
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'fs/nls/nls_cp1250.c')
0 files changed, 0 insertions, 0 deletions