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A comment on ARM64 CPUs speculatively execute instructions after ERET. Parent comment

Re:ARM64 CPUs speculatively execute instructions after ERET by cesarb on Wednesday December 18, 2019 @11:56AM (#21826793)
That looks like an "alternative" block, which means it's patched at runtime to use that instruction when it's available.
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Re:ARM64 CPUs speculatively execute instructions after ERET by saagarjha on Wednesday December 18, 2019 @12:56PM (#21827409)
Right, it's there because future CPUs may have that instruction. Do you know of any that have it today?
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