On 12/28/18, Uros Bizjak <ubiz...@gmail.com> wrote: > Use CC_SET(z)/CC_OUT(z) instead of explicit setz instruction. > Using these two defines, the compiler that supports generation of > condition code outputs from inline assembly flags generates one > conditional jump instruction, e.g:
Unfortunatelly, the 0day kernel test robot reports: [ 1.569154] DEBUG_LOCKS_WARN_ON(unlikely(early_boot_irqs_disabled)) [ 1.569287] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:2803 lockdep_hardirqs_on+0xc5/0x19e presumably due to unconditional interrupt enable in this_cpu_cmpxchg16b_emu. I have to somehow disable X86_FATURE_CX16 and thoroughly test the library path. Uros.
