If enabling SMP support for domU kernel, then compiling always failed with following error: arch/x86_64/kernel/built-in.o: In function `intel_bugs': early-quirks.c:(.text+0xd944): undefined reference to `quirk_intel_irqbalance' make: *** [.tmp_vmlinux1] Error 1 Reproducible: Always Steps to Reproduce: 1.Enable SMP support in domU kernel 2.Run "make" 3.See the failure. Someone posts a fix/workaround at: http://forums.gentoo.org/viewtopic-t-579446.html If the fix works without problem, please include it in future patch.
*** This bug has been marked as a duplicate of bug 192299 ***