>
> As we know that CPU prefetch never cross the page boundary, in this
That only applies to sequential prefetch. But speculative execution can
prefetch pretty much any address. That is why the clear_kernel_mapping is
needed.
In BIOS setup, there's "Speculative TLB Reload". Is this "Speculative
TLB Reload" the same as your mentioned speculative execution?
After disabling "Speculative TLB Reload" in BIOS, we could also
experience sync flood and reset when commenting out
clear_kernel_mapping()......
Forrest
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