Messages in this thread | | | Date | Sat, 1 May 1999 03:46:41 -0700 | From | David Miller <> | Subject | Re: 64bit port |
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From: hpa@transmeta.com (H. Peter Anvin) Date: 1 May 1999 10:29:25 GMT
No good... it's trivial for the malicious user to bypass the simple-minded check. The general problem is uncomputable.
If you mark read-only pages as clean after you scan them, and do checks on ITLB misses for pages which have been written to, plus add a special hook in the kernel for the dynamic linker to write instruction relocations efficiently in the face of this, I believe it can be done without too much of a performance hit for dynamic linking.
Later, David S. Miller davem@redhat.com
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