Messages in this thread | | | Date | Thu, 19 Dec 2002 14:16:02 -0800 | From | "H. Peter Anvin" <> | Subject | Re: Intel P6 vs P7 system call performance |
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Jamie Lokier wrote: > > Dynamic binaries or libraries can use the indirect call or relocate > the calls at load time, or if they _really_ want a magic page at a > position relative to the library, they can just _copy_ the magic page > from 0xfffe0000. It is not all that magic. >
That would make it impossible for the kernel to have kernel-controlled data on that page|other page though...
I personally would like to see some better interface than mmap() /proc/self/mem in order to alias pages, anyway. We could use a MAP_ALIAS flag in mmap() for this (where the fd would be ignored, but the offset would matter.)
-hpa
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