From: Jason Gunthorpe <jgg@nvidia.com>
To: Dave Jiang <dave.jiang@intel.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
"Reshetova, Elena" <elena.reshetova@intel.com>,
Xu Yilun <yilun.xu@linux.intel.com>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
Jiri Pirko <jiri@resnulli.us>,
"Tian, Kevin" <kevin.tian@intel.com>,
Alexey Kardashevskiy <aik@amd.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Steven Price <steven.price@arm.com>,
Kiryl Shutsemau <kas@kernel.org>,
"Edgecombe, Rick P" <rick.p.edgecombe@intel.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Jonathan Cameron <jic23@kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Ashish Kalra <ashish.kalra@amd.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
John Allen <john.allen@amd.com>, Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
"patches@lists.linux.dev" <patches@lists.linux.dev>,
Alistair <alistair23@gmail.com>
Subject: Re: [RFC PATCH v1 10/11] virt: coco: arm-cca-host: Publish slot zero and establish streams after acceptance
Date: Thu, 12 Nov 2026 12:37:37 -0400 [thread overview]
Message-ID: <20261112163737.GQ738765@nvidia.com> (raw)
In-Reply-To: <21bd5c40-7d32-450d-93a9-7d5ff6693c34@intel.com>
On Thu, Nov 12, 2026 at 08:47:59AM -0700, Dave Jiang wrote:
> > Finally, Intel actually seems to need Linux managed capture (Seriously
> > Intel, WTF?) as they don't have any other way to get the VCA, and
> > without the VCA the measurement signature cannot be checked. I hope
> > they still have time in their spec process to adopt the ARM approach.
>
> This has already been raised internally and will be addressed. The
> TDX module will return VCA with the measurements. The host will get
> it in device info and the guest through GetDeviceInfo.
You'd be better off to do this via TSM directed capture like ARM does
than to store it in the TDX module memory and retrieve it.
Jason
next prev parent reply other threads:[~2026-11-12 16:39 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-28 15:26 [RFC PATCH v1 00/11] PCI/TSM: Add CTLV attestation Aneesh Kumar K.V (Arm)
2026-10-28 15:26 ` [RFC PATCH v1 01/11] attestation: Restrict inherited operations per instance Aneesh Kumar K.V (Arm)
2026-10-30 13:29 ` Jiri Pirko
2026-10-28 15:26 ` [RFC PATCH v1 02/11] attestation: Filter evidence objects " Aneesh Kumar K.V (Arm)
2026-10-30 13:44 ` Jiri Pirko
2026-10-31 6:24 ` Aneesh Kumar K.V
2026-11-02 19:14 ` Jiri Pirko
2026-10-28 15:26 ` [RFC PATCH v1 03/11] attestation: Enter secure operation when evidence is accepted Aneesh Kumar K.V (Arm)
2026-10-30 13:51 ` Jiri Pirko
2026-10-30 15:36 ` Jason Gunthorpe
2026-10-31 4:09 ` Aneesh Kumar K.V
2026-11-02 11:28 ` Jiri Pirko
2026-10-28 15:26 ` [RFC PATCH v1 04/11] attestation: Bind object selection to accepted evidence snapshots Aneesh Kumar K.V (Arm)
2026-10-28 15:26 ` [RFC PATCH v1 05/11] attestation: Make the evidence-get challenge attribute optional Aneesh Kumar K.V (Arm)
2026-10-28 15:26 ` [RFC PATCH v1 06/11] PCI/TSM: Describe the PCI attestation control family Aneesh Kumar K.V (Arm)
2026-10-30 14:01 ` Jiri Pirko
2026-10-30 15:43 ` Jason Gunthorpe
2026-11-02 12:45 ` Jiri Pirko
2026-11-03 15:45 ` Jason Gunthorpe
2026-11-04 9:21 ` Jiri Pirko
2026-11-04 14:00 ` Jason Gunthorpe
2026-10-31 4:05 ` Aneesh Kumar K.V
2026-11-02 11:50 ` Jiri Pirko
2026-11-03 15:35 ` Jason Gunthorpe
2026-10-31 4:22 ` Aneesh Kumar K.V
2026-11-02 11:30 ` Jiri Pirko
2026-11-03 15:39 ` Jason Gunthorpe
2026-10-28 15:26 ` [RFC PATCH v1 07/11] attestation: Add attestation helpers for PCI/TSM integration Aneesh Kumar K.V (Arm)
2026-10-28 15:26 ` [RFC PATCH v1 08/11] PCI/TSM: Bind CTLV attestation to connected and locked contexts Aneesh Kumar K.V (Arm)
2026-10-28 22:56 ` Dave Jiang
2026-10-29 5:30 ` Aneesh Kumar K.V
2026-10-29 12:41 ` Jason Gunthorpe
2026-10-30 14:04 ` Jiri Pirko
2026-10-30 14:08 ` Jiri Pirko
2026-10-30 15:39 ` Jason Gunthorpe
2026-11-02 12:11 ` Jiri Pirko
2026-11-03 15:41 ` Jason Gunthorpe
2026-10-28 15:26 ` [RFC PATCH v1 09/11] crypto/ccp: Defer SEV-TIO link setup until evidence acceptance Aneesh Kumar K.V (Arm)
2026-11-06 7:47 ` Alexey Kardashevskiy
2026-11-06 13:14 ` Aneesh Kumar K.V
2026-11-06 14:21 ` Jason Gunthorpe
2026-11-09 10:03 ` Alexey Kardashevskiy
2026-11-12 6:23 ` Aneesh Kumar K.V
2026-10-28 15:26 ` [RFC PATCH v1 10/11] virt: coco: arm-cca-host: Publish slot zero and establish streams after acceptance Aneesh Kumar K.V (Arm)
2026-10-29 16:56 ` Dave Jiang
2026-10-29 17:10 ` Jason Gunthorpe
2026-10-30 9:58 ` Reshetova, Elena
2026-10-30 13:15 ` Jason Gunthorpe
2026-10-31 3:47 ` Aneesh Kumar K.V
2026-11-02 10:11 ` Reshetova, Elena
2026-11-02 17:26 ` Jason Gunthorpe
2026-11-03 12:01 ` Reshetova, Elena
2026-11-03 15:16 ` Jason Gunthorpe
2026-11-04 8:03 ` Xu Yilun
2026-11-04 9:49 ` Reshetova, Elena
2026-11-04 13:41 ` Jason Gunthorpe
2026-11-04 16:54 ` Dave Jiang
2026-11-06 15:53 ` Dave Jiang
2026-11-06 19:30 ` Jason Gunthorpe
2026-11-06 22:39 ` Dave Jiang
2026-11-08 18:33 ` Jason Gunthorpe
2026-11-09 10:55 ` Reshetova, Elena
2026-11-09 13:47 ` Jason Gunthorpe
2026-11-09 17:37 ` Dave Jiang
2026-11-09 18:53 ` Jason Gunthorpe
2026-11-09 20:54 ` Dave Jiang
2026-11-09 23:40 ` Jason Gunthorpe
2026-11-10 13:15 ` Reshetova, Elena
2026-11-10 14:20 ` Jason Gunthorpe
2026-11-11 13:09 ` Reshetova, Elena
2026-11-11 14:13 ` Jason Gunthorpe
2026-11-12 1:48 ` Alexey Kardashevskiy
2026-11-12 12:31 ` Jason Gunthorpe
2026-11-10 1:40 ` Alistair
2026-11-10 15:07 ` Jason Gunthorpe
2026-11-10 5:32 ` Alexey Kardashevskiy
2026-11-10 12:52 ` Jason Gunthorpe
2026-11-11 9:03 ` Alexey Kardashevskiy
2026-11-12 9:37 ` Aneesh Kumar K.V
2026-11-12 14:52 ` Jason Gunthorpe
2026-11-12 15:47 ` Dave Jiang
2026-11-12 16:37 ` Jason Gunthorpe [this message]
2026-11-10 20:07 ` Jason Gunthorpe
2026-11-04 9:03 ` Reshetova, Elena
2026-11-04 13:48 ` Jason Gunthorpe
2026-11-06 8:24 ` Aneesh Kumar K.V
2026-11-06 12:49 ` Reshetova, Elena
2026-11-06 15:53 ` Aneesh Kumar K.V
2026-11-06 18:54 ` Jason Gunthorpe
2026-11-03 16:31 ` Aneesh Kumar K.V
2026-11-03 17:56 ` Jason Gunthorpe
2026-11-02 10:05 ` Reshetova, Elena
2026-11-02 10:22 ` Reshetova, Elena
2026-11-02 17:37 ` Jason Gunthorpe
2026-10-28 15:26 ` [RFC PATCH v1 11/11] virt: coco: arm-cca-guest: Refresh selected evidence against trusted digests Aneesh Kumar K.V (Arm)
2026-10-30 12:34 ` [RFC PATCH v1 00/11] PCI/TSM: Add CTLV attestation Xu Yilun
2026-10-30 15:32 ` Jason Gunthorpe
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