From: "Jarkko Sakkinen" <jarkko@kernel.org>
To: "Dionna Amalie Glaze" <dionnaglaze@google.com>
Cc: "Stefano Garzarella" <sgarzare@redhat.com>,
"Jarkko Sakkinen" <jarkko.sakkinen@iki.fi>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"James Bottomley" <james.bottomley@hansenpartnership.com>,
<linux-coco@lists.linux.dev>, "Borislav Petkov" <bp@alien8.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Peter Huewe" <peterhuewe@gmx.de>,
"H. Peter Anvin" <hpa@zytor.com>,
<linux-integrity@vger.kernel.org>, <x86@kernel.org>,
"Joerg Roedel" <jroedel@suse.de>, <linux-kernel@vger.kernel.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Claudio Carvalho" <cclaudio@linux.ibm.com>,
"Dov Murik" <dovmurik@linux.ibm.com>,
"Tom Lendacky" <thomas.lendacky@amd.com>
Subject: Re: [PATCH 3/3] x86/sev: add a SVSM vTPM platform device
Date: Thu, 23 Jan 2025 11:50:40 +0200 [thread overview]
Message-ID: <D79CYAVX0LAZ.1MIYNOM6J7MMM@kernel.org> (raw)
In-Reply-To: <CAAH4kHYy7=OZsHnOBiQug0Y__bNHt6i+bop0xaxQjpWQ6aQr1Q@mail.gmail.com>
On Wed Jan 22, 2025 at 11:29 PM EET, Dionna Amalie Glaze wrote:
> I can appreciate this viewpoint. It even surfaced Microsoft's fTPM
> paper to me, which solves some interesting problems we need to solve
> in SVSM too. So thanks for that.
>
> Just to clarify, you're not asking for SVSM to implement the TIS-MMIO
> interface instead, but rather to use the fTPM stack, which could make
> SVSM calls a TEE device operation?
I don't really know what I'm asking because this is barely even a
PoC, and I state it like this knowingly.
You should make the argument, and the case for the solution. Then
it is my turn to comment on that scheme.
That said, I would not give high odds for acceptance of a duplicate
TPM stack succeeding.
BR, Jarkko
next prev parent reply other threads:[~2025-01-23 9:50 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-10 14:34 [PATCH 0/3] Enlightened vTPM support for SVSM on SEV-SNP Stefano Garzarella
2024-12-10 14:34 ` [PATCH 1/3] tpm: add generic platform device Stefano Garzarella
2024-12-12 9:51 ` Stefano Garzarella
2024-12-12 14:35 ` James Bottomley
2024-12-12 15:30 ` Stefano Garzarella
2024-12-12 15:41 ` James Bottomley
2024-12-12 16:12 ` Stefano Garzarella
2024-12-10 14:34 ` [PATCH 2/3] x86/sev: add SVSM call macros for the vTPM protocol Stefano Garzarella
2024-12-10 14:34 ` [PATCH 3/3] x86/sev: add a SVSM vTPM platform device Stefano Garzarella
2024-12-10 14:40 ` Jason Gunthorpe
2024-12-10 14:55 ` James Bottomley
2024-12-10 15:04 ` Jason Gunthorpe
2024-12-11 8:19 ` Stefano Garzarella
2024-12-11 15:00 ` Jason Gunthorpe
2024-12-11 15:38 ` Stefano Garzarella
2024-12-11 15:53 ` Jason Gunthorpe
2024-12-11 16:42 ` Stefano Garzarella
2024-12-19 15:35 ` Stefano Garzarella
2024-12-19 15:40 ` Jarkko Sakkinen
2024-12-19 16:06 ` Stefano Garzarella
2025-01-14 10:42 ` Stefano Garzarella
2025-01-14 13:07 ` Jason Gunthorpe
2025-01-14 16:51 ` Stefano Garzarella
2025-01-14 17:33 ` Jason Gunthorpe
2025-01-14 22:46 ` Jarkko Sakkinen
2025-01-14 22:48 ` Jarkko Sakkinen
2025-01-14 23:12 ` Jarkko Sakkinen
2025-01-22 21:29 ` Dionna Amalie Glaze
2025-01-23 9:50 ` Jarkko Sakkinen [this message]
2025-01-23 10:09 ` Stefano Garzarella
2025-01-23 11:46 ` Jarkko Sakkinen
2025-01-23 11:49 ` Jarkko Sakkinen
2025-01-23 12:29 ` Stefano Garzarella
2024-12-11 16:30 ` Tom Lendacky
2024-12-11 16:55 ` Stefano Garzarella
2024-12-11 17:02 ` James Bottomley
2024-12-13 11:48 ` Stefano Garzarella
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