From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lamorak.hansenpartnership.com (lamorak.hansenpartnership.com [198.37.111.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C0DA31B4138; Mon, 31 Mar 2025 22:59:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.37.111.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743461981; cv=none; b=g2alPpzVSjBAkh2qm9eenCPnJ9oI0e0hv5N5SDM8fzuAYEEqZB7F93Ej2fo8i+V762nzJbUWxWNC4z+hkR+UwCKJUcheM5zsI4qlATC/68HwNZyupcruths/TrvbXZx0M3q+q+VYLze0wgm33fgE9rqGX/4LrYxSWoz1QdLyu7M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743461981; c=relaxed/simple; bh=YoT06rcwjO+fXJnqhihPCJhPcU1YUO0UiZFIXCjWAT4=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=EJY4/gQsqDJquUGh5kkX+eyz8zEJOzCknh+cDkscGyXZaJ4gTnXTpyDxynpORES4Dzpui4vtMryCStFmCJUKzhaL058fq72AAc/9cjrTRoc7Tl7mGdK8bmcvXgr2HD9zEMZwQBqHvQddorWEaMRQKgcIMDKcssFJbHboP3/pMlw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=HansenPartnership.com; spf=pass smtp.mailfrom=HansenPartnership.com; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b=QWuoA219; arc=none smtp.client-ip=198.37.111.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=HansenPartnership.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=HansenPartnership.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="QWuoA219" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hansenpartnership.com; s=20151216; t=1743461977; bh=YoT06rcwjO+fXJnqhihPCJhPcU1YUO0UiZFIXCjWAT4=; h=Message-ID:Subject:From:To:Date:In-Reply-To:References:From; b=QWuoA219RVM+sUf93jow8nE+EMj0lmWh3M02D0b42qNEQKsVBuVo6/obdivPsbnRD V+dT5vsvif4T31gpS4O1uXQsaDb4squv0+8poFMatv9SP76VhDLMwemvSbAh4Mx01J HT5u4f3LVfJHqJzKI/VMqQZht2z91dwsNzpcPGzg= Received: from lingrow.int.hansenpartnership.com (unknown [IPv6:2601:5c4:4302:c21::a774]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lamorak.hansenpartnership.com (Postfix) with ESMTPSA id EC6621C0321; Mon, 31 Mar 2025 18:59:36 -0400 (EDT) Message-ID: Subject: Re: [PATCH v5 3/4] tpm: add SNP SVSM vTPM driver From: James Bottomley To: Dionna Amalie Glaze Cc: Jarkko Sakkinen , Stefano Garzarella , linux-kernel@vger.kernel.org, Jason Gunthorpe , Dave Hansen , Borislav Petkov , linux-integrity@vger.kernel.org, Peter Huewe , Ingo Molnar , linux-coco@lists.linux.dev, Dov Murik , Thomas Gleixner , Joerg Roedel , x86@kernel.org, Tom Lendacky , Claudio Carvalho , "H. Peter Anvin" Date: Mon, 31 Mar 2025 18:59:36 -0400 In-Reply-To: References: <20250331103900.92701-1-sgarzare@redhat.com> <20250331103900.92701-4-sgarzare@redhat.com> <02190762dd82104070ff1a2942a7be703f4ff53d.camel@HansenPartnership.com> Autocrypt: addr=James.Bottomley@HansenPartnership.com; prefer-encrypt=mutual; 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8mT2Eh9SkH+YVOmaKsajgZgrBxA7fWmGoxXswEVxJIFj3vW7yNc0C5HaUdYa5iGOMs4kg2ht4s7yy7NRQuh7BifWjo6BQ6k4S1H+6axZucxhSV1L6zN9d+lr3Xo/vy1unzA== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2025-03-31 at 15:23 -0700, Dionna Amalie Glaze wrote: > On Mon, Mar 31, 2025 at 2:26=E2=80=AFPM James Bottomley > wrote: > >=20 > > 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=3Dy, > > > but I don't see the event log in securityfs. What am I missing? > >=20 > > 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. >=20 > This test is with Oliver's PR > https://github.com/tianocore/edk2/pull/6527 Well, since the event log is searched for in tpm_chip_register(), I really don't think it can be the kernel driver. Best guess is there's something wrong with that patch set (or the vTPM didn't activate in OVMF for some reason). Regards, James