Messages in this thread | | | From | Tony Luck <> | Date | Thu, 4 Jan 2018 15:09:28 -0800 | Subject | Re: proposal for meltdown-workaround with low overhead |
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On Thu, Jan 4, 2018 at 11:45 AM, Alexander Kleinsorge <aleks@physik.tu-berlin.de> wrote: > As Meltdown-Issue depends on allowing to cause many exceptions (usually : > accessing an invalid address), we could restrict this misusage easy.
The accesses to the invalid address are performed speculatively by the CPU in a code branch that is later found to be not taken. Hence there are no exceptions at all.
-Tony
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