Messages in this thread | | | Subject | Re: [PATCH] paravirt.h | From | Alan Cox <> | Date | Tue, 22 Aug 2006 16:58:13 +0100 |
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Ar Maw, 2006-08-22 am 07:59 -0700, ysgrifennodd Jeremy Fitzhardinge: > out, nothing is actually read-only in the kernel when using a 2M > mapping. It's also ameliorated by the fact that some of the entrypoints
Thats a loader problem. It ties directly in with things like relocatable kernels. Arjan has been systematically working to get us "const" objects and that needs to continue, and the more we can enforce it the more security we get and the more bugs we catch.
It's also a mistake to assume the read-only doesn't help. Your 2MB sections penalty isnt true in a virtualised environment.
Alan
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