linux-kernel - Re: [PATCH v5 3/4] tpm: add SNP SVSM vTPM driver

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Message-ID: <CAAH4kHYwDgnYsMhJ8zZWn1uU4tqqnSXOLKEJNMb-3OCNrM7Z9A@mail.gmail.com>
Date: Mon, 31 Mar 2025 15:23:05 -0700
From: Dionna Amalie Glaze <dionnaglaze@...gle.com>
To: James Bottomley <James.Bottomley@...senpartnership.com>
Cc: Jarkko Sakkinen <jarkko@...nel.org>, Stefano Garzarella <sgarzare@...hat.com>, linux-kernel@...r.kernel.org, 
	Jason Gunthorpe <jgg@...pe.ca>, Dave Hansen <dave.hansen@...ux.intel.com>, 
	Borislav Petkov <bp@...en8.de>, linux-integrity@...r.kernel.org, 
	Peter Huewe <peterhuewe@....de>, Ingo Molnar <mingo@...hat.com>, linux-coco@...ts.linux.dev, 
	Dov Murik <dovmurik@...ux.ibm.com>, Thomas Gleixner <tglx@...utronix.de>, 
	Joerg Roedel <jroedel@...e.de>, x86@...nel.org, Tom Lendacky <thomas.lendacky@....com>, 
	Claudio Carvalho <cclaudio@...ux.ibm.com>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH v5 3/4] tpm: add SNP SVSM vTPM driver

On Mon, Mar 31, 2025 at 2:26 PM James Bottomley
<James.Bottomley@...senpartnership.com> wrote:
>
> On Mon, 2025-03-31 at 13:56 -0700, Dionna Amalie Glaze wrote:
> [...]
> > I might be unclear on how I should be testing this, but I do see
> > /dev/tpm0 and /dev/tpmrm0 when I build with CONFIG_TCG_SVSM=y, but I
> > don't see the event log in securityfs. What am I missing?
>
> The vtpm driver for EDK2/OVMF I suspect ... without that the UEFI won't
> lay down and event log for the kernel to pick up.

This test is with Oliver's PR https://github.com/tianocore/edk2/pull/6527

>
> Regards,
>
> James
>
>


-- 
-Dionna Glaze, PhD, CISSP, CCSP (she/her)