[Bug target/86774] Alpha port needs updating for CVE-2017-5753

[mcree at orcon dot net.nz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86774

Michael Cree <mcree at orcon dot net.nz> changed:

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--- Comment #2 from Michael Cree <mcree at orcon dot net.nz> ---
Just to note that in testing earlier this year I managed to successfully run
meltdown and spectre v1 attacks on Alpha EV68 hardware.  These attacks were
less successful on EV67 (only a 1% to 2% success rate). I failed to get any
attack on EV56---cache timings did not reveal anything useful (though I did not
spend too much time analysing this case).