x86 Straight Line Speculation Mitigation Being Back-Ported To GCC 11

There sure has been a lot of x86 straight-line speculation happenings in recent months with the compiler-based mitigation being merged for GCC 12 and then beginning with Linux 5.17 the kernel can make use of that new knob for fending off this potential vulnerability. Now the compiler support is even being back-ported to GCC 11...