tree 7e056813c1f82c6e6187b9058a31bf1379315fbd
parent 9f8dc28cb04bd648fb66a7e53b84fd663471c013
author Andy Lutomirski <luto@kernel.org> 1437691068 -0700
committer Andy Lutomirski <luto@kernel.org> 1439999508 -0700

x86/entry/64: Move #BP from IST to the IRQ stack

There's nothing IST-worthy about #BP/int3.  We don't allow kprobes
in the small handful of places in the kernel that run at CPL0 with
an invalid stack, and 32-bit kernels have used normal interrupt
gates for #BP forever.

Furthermore, we don't allow kprobes in places that have usergs while
in kernel mode, so "paranoid" is also unnecessary.

Signed-off-by: Andy Lutomirski <luto@kernel.org>