3 ms·
The 486 has both branch prediction and a cache, but I'm not sure if it's vulnerable. Reference: https://gist.github.com/ErikAugust/724d4a969fb2c6ae1bbd7b2a9e3d
by exikyut 9y ago
The 486 has both branch prediction and a cache, but I'm not sure if it's vulnerable.
Reference: https://gist.github.com/ErikAugust/724d4a969fb2c6ae1bbd7b2a9e3d4bb6#gistcomment-2311162 https://gist.github.com/ErikAugust/724d4a969fb2c6ae1bbd7b2a9...
Potential patch: https://gist.github.com/ErikAugust/724d4a969fb2c6ae1bbd7b2a9e3d4bb6#gistcomment-2311156 https://gist.github.com/ErikAugust/724d4a969fb2c6ae1bbd7b2a9...
- yeokm1 9y agoI just Googled to double check. The 486 does NOT have branch prediction. Source 1: https://books.google.com.sg/books?id=MLJClvCYh34C&pg=PA122&lpg=PA122&dq=486+branch+prediction&source=bl&ots=gcMvZFz2Pz&sig=FJ9fEmH426N7eoHxLupu5x2ZrdQ&hl=en&sa=X&ved=0ahUKEwi7k5aCucXYAhUHQY8KHcgACkUQ6AEILjAB#v=onepage&q=486%20branch%20prediction&f=false https://books.google.com.sg/books?id=MLJClvCYh34C&pg=PA122&l... Source 2: https://books.google.com.sg/books?id=QzsEAAAAMBAJ&pg=PA59&lpg=PA59&dq=486+branch+prediction&source=bl&ots=LCXnhUpS83&sig=g59BBBuiCx-qM6bOjRW5mkq1Nug&hl=en&sa=X&ved=0ahUKEwi7k5aCucXYAhUHQY8KHcgACkUQ6AEIPDAD#v=onepage&q=486%20branch%20prediction&f=false https://books.google.com.sg/books?id=QzsEAAAAMBAJ&pg=PA59&lp...
- exikyut 9y agoWow. So the 486 cores used for the Intel ME are completely Spectre-resistant. That is hilarious.