Messages in this thread | | | Date | Wed, 22 Aug 2018 10:14:17 +0200 | From | Borislav Petkov <> | Subject | Re: SEV guest regression in 4.18 |
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Dropping Pavel as it bounces.
On Tue, Aug 21, 2018 at 11:07:38AM -0500, Brijesh Singh wrote: > The tsc_early_init() is called before setup_arch() -> init_mem_mapping.
Ok, I see it, thanks for explaining.
So back to your original ideas - I'm wondering whether we should define a chunk of memory which the hypervisor and guest can share and thus communicate over... Something ala SEV-ES also with strictly defined layout and put all those variables there. And then the guest can map decrypted.
There might be something similar though, I dunno.
Maybe Paolo has a better idea...
-- Regards/Gruss, Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
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