> I think the bottom line for me is simply that I cannot enter system
> calls any way I want with any kernel,
Only for SYSENTER. int 0x80 and SYSCALL don't have this problem.
For SYSENTER you can just call the trampoline in the vsyscall page.
glibc does that too. The address can be found in the ELF aux vector.
-Andi
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