> On the I386 a kernel thread switch does indeed flush the TLB (but tlb
> flushes on the intel are cheap and Linus could optimize this away if
isn't it so, that the TLB has to be flushed only if the root page table
directory changes (the value of CR3 put into the TSS)? Dont know if
CR3 changes for a i386 Linux clone()-ed VM_SHARE process though :(
-- mingo