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Date:   Thu, 23 Jul 2020 09:21:02 +0200
From:   Joerg Roedel <joro@8bytes.org>
To:     Mike Stunes <mstunes@vmware.com>
Cc:     Joerg Roedel <jroedel@suse.de>, "x86@kernel.org" <x86@kernel.org>,
        Tom Lendacky <thomas.lendacky@amd.com>,
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Subject: Re: [PATCH v4 51/75] x86/sev-es: Handle MMIO events
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Hi Mike,

On Wed, Jul 22, 2020 at 10:53:02PM +0000, Mike Stunes wrote:
> Thanks Joerg! With that change in place, this kernel boots normally.
> What was the problem?

The problem was that the code got its page-table from
current->active_mm. But these pointers are not set up during early boot,
so that the #VC handler can't walk the page-table and propagates a
page-fault every time. This loops forever.

Getting the page-table from CR3 instead works at all stages of the
systems runtime.

Regards,

	Joerg