On Tue, Nov 15, 2016 at 08:40:05AM -0600, Tom Lendacky wrote:
> The feature may be present and enabled even if it is not currently
> active. In other words, the SYS_CFG MSR bit could be set but we aren't
> actually using encryption (sme_me_mask is 0). As long as the SYS_CFG
> MSR bit is set we need to take into account the physical reduction in
> address space.
But later in the series I see sme_early_mem_enc() which tests exactly
that mask.
And in patch 12 you have:
+ /*
+ * If memory encryption is active, the trampoline area will need to
+ * be in un-encrypted memory in order to bring up other processors
+ * successfully.
+ */
+ sme_early_mem_dec(__pa(base), size);
+ sme_set_mem_unenc(base, size);
What's up?
IOW, it all sounds to me like you want to have an sme_active() helper
and use it everywhere.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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