On Thu, Sep 22, 2016 at 02:04:27PM -0500, Tom Lendacky wrote:

That's not what I mean here.  If the BIOS sets the SMEE bit in the
SYS_CFG msr then, even if the encryption bit is never used, there is
still a reduction in physical address space.

I thought that reduction is the reservation of bits for the SME mask.

What other reduction is there?

Transparent SME (TSME) will be a BIOS option that will result in the
memory controller performing encryption no matter what. In this case
all data will be encrypted without a reduction in physical address
space.

Now I'm confused: aren't we reducing the address space with the SME
mask?

Or what reduction do you mean?

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
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