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Re: [PATCH v7 07/13] confidential guest support: Introduce cgs "ready" f

From: Cornelia Huck
Subject: Re: [PATCH v7 07/13] confidential guest support: Introduce cgs "ready" flag
Date: Fri, 15 Jan 2021 14:12:07 +0100

On Thu, 14 Jan 2021 10:58:05 +1100
David Gibson <david@gibson.dropbear.id.au> wrote:

> The platform specific details of mechanisms for implementing
> confidential guest support may require setup at various points during
> initialization.  Thus, it's not really feasible to have a single cgs
> initialization hook, but instead each mechanism needs its own
> initialization calls in arch or machine specific code.
> However, to make it harder to have a bug where a mechanism isn't
> properly initialized under some circumstances, we want to have a
> common place, relatively late in boot, where we verify that cgs has
> been initialized if it was requested.
> This patch introduces a ready flag to the ConfidentialGuestSupport
> base type to accomplish this, which we verify just before the machine
> specific initialization function.
> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
> ---
>  hw/core/machine.c                         | 8 ++++++++
>  include/exec/confidential-guest-support.h | 2 ++
>  target/i386/sev.c                         | 2 ++
>  3 files changed, 12 insertions(+)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>

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