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(parent: 7ba6db2) | patch
uprobes/x86: Emulate nop's using ops->emulate()
authorOleg Nesterov <oleg@redhat.com>
Sat, 5 Apr 2014 19:06:10 +0000 (21:06 +0200)
committerOleg Nesterov <oleg@redhat.com>
Thu, 17 Apr 2014 19:58:22 +0000 (21:58 +0200)
commitd241006354c550c7d22f304e2fdf90137fb8eaab
tree2494931597f4033b265f74763f5b851692a7da3atree | snapshot (tar.gz zip)
parent7ba6db2d688bdf83049a18c8e55b2d1e58e8b0bccommit | diff
uprobes/x86: Emulate nop's using ops->emulate()

Finally we can kill the ugly (and very limited) code in __skip_sstep().
Just change branch_setup_xol_ops() to treat "nop" as jmp to the next insn.

Thanks to lib/insn.c, it is clever enough. OPCODE1() == 0x90 includes
"(rep;)+ nop;" at least, and (afaics) much more.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Jim Keniston <jkenisto@us.ibm.com>
arch/x86/kernel/uprobes.c diff | blob | blame | history