linux-kernel - Re: [PATCH v2 1/1] arm64: rsi: Add automatic arm-cca-guest module loading

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Message-ID: <2285bc57-bd9a-4696-ac29-73bb233c9b3e@redhat.com>
Date: Tue, 3 Dec 2024 11:22:19 +1000
From: Gavin Shan <gshan@...hat.com>
To: Jeremy Linton <jeremy.linton@....com>,
 linux-arm-kernel@...ts.infradead.org
Cc: steven.price@....com, sami.mujawar@....com, suzuki.poulose@....com,
 will@...nel.org, catalin.marinas@....com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] arm64: rsi: Add automatic arm-cca-guest module
 loading

On 12/3/24 10:01 AM, Jeremy Linton wrote:
> The TSM module provides both guest identification as well as
> attestation when a guest is run in CCA mode. Lets assure by creating a
> dummy platform device that the module is automatically loaded during
> boot.  The TSM module will be loaded by udev daemon after it receives
> the device addition event. Once it is in place it can be used earlier
> in the boot process to say decrypt a LUKS rootfs.
> 
> Signed-off-by: Jeremy Linton <jeremy.linton@....com>
> ---
>   arch/arm64/include/asm/rsi.h                    |  2 ++
>   arch/arm64/kernel/rsi.c                         | 15 +++++++++++++++
>   drivers/virt/coco/arm-cca-guest/arm-cca-guest.c |  8 ++++++++
>   3 files changed, 25 insertions(+)
> 

Reviewed-by: Gavin Shan <gshan@...hat.com>