From: Oleg Nesterov <oleg@redhat.com>
Date: Sat, 5 Apr 2014 19:06:10 +0000 (+0200)
Subject: uprobes/x86: Emulate nop's using ops->emulate()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~34^2~40^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d241006354c550c7d22f304e2fdf90137fb8eaab;p=pandora-kernel.git

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>
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