Messages in this thread | | | Date | Mon, 22 Jan 2018 09:56:25 +0100 | From | Joerg Roedel <> | Subject | Re: [RFC PATCH 00/16] PTI support for x86-32 |
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Hey Nadav,
On Sun, Jan 21, 2018 at 03:46:24PM -0800, Nadav Amit wrote: > It does seem that segmentation provides sufficient protection from Meltdown.
Thanks for testing this, if this turns out to be true for all affected uarchs it would be a great and better way of protection than enabling PTI.
But I'd like an official statement from Intel on that one, as their recommended fix is still to use PTI.
And as you said, if it turns out that this works only on some Intel uarchs, we can also detect it at runtime and then chose the fasted meltdown protection mechanism.
Thanks,
Joerg
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