# cat /etc/portage/package.use
# my cpu flags
*/* CPU_FLAGS_X86: aes avx avx2 bmi1 bmi2 f16c fma3 mmx mmxext pclmul popcnt rdrand sse sse2 sse3 sse4_1 sse4_2 ssse3

# nvidia drivers
*/* VIDEO_CARDS: nvidia

# install kernel
sys-kernel/installkernel grub -dracut ugrd