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On 23 Jan 2009 at 9:16, Grant wrote: |
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> > There is no "nx" in your cpuinfo flags. Therefore, your P4 does not |
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> > have the hardware NX bit (or XD bit in Intel wording) |
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> |
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> I do have SEGMEXEC enabled though. Should it still be noticeably (but |
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> slightly) slower? If so, I suppose the best thing to do would be to |
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> upgrade the CPU? |
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if both PAGEEXEC and SEGMEXEC are enabled, PaX uses one of them by default, |
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depending on whether your CPU and kernel config supports the NX bit or not |
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(yes, you need to enable PAE support in the kernel in order to actually be |
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able to use the NX bit). in your case the CPU has no NX support so PaX should |
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have fallen back to SEGMEXEC (pspax could confirm it) and not PAGEEXEC. can |
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you check what really happened? because if PAGEEXEC was chosen by default on |
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your CPU, there's a bug somewhere... |
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