https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105930
--- Comment #9 from Linus Torvalds <torva...@linux-foundation.org> --- Looks like STV is "scalar to vector" and it should have been disabled automatically by the -mno-avx flag anyway. And the excessive stack usage was perhaps due to GCC preparing all those stack slots for integer -> vector movement that then never happens exactly because the kernel uses -mno-avx? So if I understand this right, the kernel can indeed just add -mno-stv to work around this. ?
