Updated ARM Patches Posted For Mitigating Spectre V1 With GCC Compiler

[phoronix]

Phoronix: Updated ARM Patches Posted For Mitigating Spectre V1 With GCC Compiler

ARM's Richard Earnshaw has posted a revised version for their months-in-development patch-set for mitigating against unsafe data speculation by the GCC code compiler. This new Spectre V1 mitigation for ARM 64-bit would be exposed via a new -mtrack-speculation compiler switch...

http://www.phoronix.com/scan.php?page=news_item&px=Spectre-V1-GCC-July-ARM

[dwagner]

A quick glance at the "-mtrack-speculation" concept tells me this is probably going to significantly cost performance.