Messages in this thread | | | Date | Sat, 10 May 2003 12:23:50 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] i386 uaccess to fixmap pages |
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Jamie Lokier wrote: > > It doesn't need a PTE. The vsyscall code could be _copied_ to the end > of the page at 0xbffff000, with the stack immediately preceding it. >
You don't really want that, though. If you're doing gettimeofday() in user space it's critically important that the kernel can modify all these pages at once.
-hpa
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