News for hackers. Stuff that matters.
Re:Apple Plans to Announce Move to Its Own Mac Chips at WWDC by my123 on Tuesday June 09, 2020 @09:28AM (#23466472)
x86 has total store ordering, which requires to add barriers to make the order respected on Arm while doing emulation. On newer Arm chips, barriers are much cheaper, solving the problem.
Re:Apple Plans to Announce Move to Its Own Mac Chips at WWDC by messe on Tuesday June 09, 2020 @10:33AM (#23466993)
Not only that, but Apple if they wanted to could strengthen the memory model of their custom chips, meaning the barriers wouldn't be necessary during emulation.