[PATCH 4.9 78/96] x86/alternatives: Fix optimize_nops() checking

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Borislav Petkov commit 612e8e9350fd19cae6900cf36ea0c6892d1a0dca upstream. The alternatives code checks only the first byte whether it is a NOP, but with NOPs in front of the

[PATCH 4.9 78/96] x86/alternatives: Fix optimize_nops() checking

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Borislav Petkov commit 612e8e9350fd19cae6900cf36ea0c6892d1a0dca upstream. The alternatives code checks only the first byte whether it is a NOP, but with NOPs in front of the payload and having