Actually seems a lot easier to convince people to rebuild for a new ABI than it does to convince them to eat 3x perf / memory use costs.
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Replying to @CopperheadOS
New ABI is an acceptable cost occasionally, but when done it needs to be done right. Screwing up & having to repeat is really bad image.
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Replying to @RichFelker
Fully agree. Prematurely pushing a new ABI or hard-wiring an approach in hardware is bad. Definitely shouldn't be done behind closed doors.
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Replying to @CopperheadOS @RichFelker
Can do that for entirely internal platforms but it's awful that ARM and Intel don't consult with the broader developer / academic community.
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Replying to @CopperheadOS @RichFelker
Going to end up with all kinds of weird weak, slow and broken mitigations hard-wired into hardware. Not a fan of that approach at all.
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Replying to @CopperheadOS @RichFelker
It's a lot different if it's only in software and not done in a way that encodes it as an API / ABI that needs to be supported forever.
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Replying to @CopperheadOS @RichFelker
Can't understand how throwing stuff at the wall to see what sticks is a sustainable approach to ISA design but what do we know.
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Replying to @CopperheadOS @RichFelker
Not a big fan of https://lwn.net/Articles/718888/ … either. Hardware should take a longer term approach than this, no?
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Replying to @CopperheadOS @RichFelker
I am biased here. This is exploring a new primitive. Prefer to see where this takes us rather than waiting for a long term perfect thing.
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Replying to @acar_can @CopperheadOS
Hardware shouldn't even be involved. It's about grasping at ways to monopolize the cpu/isa market, not protecting users.
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Memory safety is completely achievable in general purpose computing. No need for wacky proprietary isa extensions that competing isas lack.
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Replying to @RichFelker @CopperheadOS
sure, lets wait for industry wide consensus across all ISAs before changing anything.
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