On Mon, Jan 08, 2001 at 04:07:31PM +0100, Maciej W. Rozycki wrote: > The only case caches need to be synchronized is modifying some code. The > ptrace syscall does it automatically for text writes -- it's needed and > used by gdb to set breakpoints, for example. For other code there is > cacheflush() which allows you to flush a cache range relevant to a given > virtual address (I see it's not implemented very well at the moment). > > Obviously, you don't want to allow unprivileged users to flush caches as > a whole as it could lead to a DoS. You obviously want to allow partial cache flushes or trampolines don't work and flushing the entire cache can be constructed from that. Ralf
