Thread (19 messages) flat view 19 messages, 8 authors, 2006-08-16

Re: PowerPC paxtest results w/ gcc-4.1

From: Paul Mackerras <hidden>
Date: 2006-08-16 11:07:44

Gabriel Paubert writes:
I agree, but I don't know why you believe it would cause 
a machine check (0x200): from my docs, it is an ISI (0x400). 
I don't believe it would cause a machine check either, but that is
what Matt Sealey was saying.  I don't know where he got that idea.
BTW, there is one way to make pages non executable: mark
them as guarded, but it will have a significant cost in
terms of performance. 
Indeed.  I guess we could do that as a config option for machines that
really want maximum security at the expense of performance, but I
don't think all users would want that.

Paul.
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