Re: [PATCH v6 4/4] x86/sev: register tpm-svsm platform device

Stefano Garzarella
2025-04-10T08:15:43Z

On Wed, Apr 09, 2025 at 02:16:40PM -0500, Tom Lendacky wrote:
>On 4/9/25 13:45, Borislav Petkov wrote:
>> On Wed, Apr 09, 2025 at 11:07:49AM -0500, Tom Lendacky wrote:
>>> So the vTPM driver wouldn't change, just snp_init_platform_device():
>>>
>>> if (snp_vmpl && platform_device_register(&tpm_svsm_device))
>>
>> So this basically says that the SVSM is always sporting a vTPM emulation. But
>> you can build the cocont-svsm thing without it AFAICT.
>>
>> So I'm guessing Stefano's suggestion here might make more sense:
>>
>> https://lore.kernel.org/r/o2u7p3wb64lcc4sziunr274hyubkgmspzdjcvihbpzkw6mkvpo@sjq3vi4y2qfl
>>
>> considering it all...
>
>That way works for me, too.

Okay, it looks like we have an agreement! I'll apply that and send v7.

Thanks,
Stefano