From: Jason Gunthorpe <jgg@ziepe.ca>
To: Sami Mujawar <Sami.Mujawar@arm.com>
Cc: Suzuki Poulose <Suzuki.Poulose@arm.com>,
Dan Williams <djbw@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"will@kernel.org" <will@kernel.org>,
"thuth@redhat.com" <thuth@redhat.com>,
Steven Price <Steven.Price@arm.com>,
"gshan@redhat.com" <gshan@redhat.com>,
Yeoreum Yun <YeoReum.Yun@arm.com>,
"cedric.xing@intel.com" <cedric.xing@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Dionna Glaze <dionnaglaze@google.com>,
"Aneesh Kumar K . V" <aneesh.kumar@kernel.org>,
Alexey Kardashevskiy <aik@amd.com>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>
Subject: Re: [PATCH 0/3] arm64/virt: Add Arm CCA measurement register support
Date: Wed, 22 Apr 2026 09:40:41 -0300 [thread overview]
Message-ID: <20260422124041.GJ3611611@ziepe.ca> (raw)
In-Reply-To: <AS8PR08MB680669CBFA9654BC12179D5E842F2@AS8PR08MB6806.eurprd08.prod.outlook.com>
On Wed, Apr 22, 2026 at 08:57:00AM +0000, Sami Mujawar wrote:
> > So this is tying it to the same FW event log that TPM uses.
> >
> > I think that strengthens my point this should all be uninform. TPM
> > drivers are directly exposing the event log today, but I guess that
> > needs generalization if non-TPM drivers are going to present it as
> > well.
> >
> > How do you imagine getting and manipulating the EFI event log to use
> > with this?
>
> The event logs from UEFI will be handed off to the OS using CCEL
> ACPI table. The CCEL table spec update can be seen at
> https://github.com/tianocore/edk2/issues/11384
I ment from linux userspace. event log is well establihsed in the aCPI
side for TPM and in Linux today it is only exposed to userspace
through TPM.
This is not TPM, so how do you intend to give the event log to
userspace?
Jason
prev parent reply other threads:[~2026-04-22 12:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260413084957.327661-1-sami.mujawar@arm.com>
[not found] ` <20260413125925.GK3694781@ziepe.ca>
2026-04-14 10:10 ` [PATCH 0/3] arm64/virt: Add Arm CCA measurement register support Suzuki K Poulose
2026-04-14 12:29 ` Jason Gunthorpe
2026-04-14 13:26 ` Suzuki K Poulose
2026-04-14 13:35 ` Jason Gunthorpe
2026-04-22 8:57 ` Sami Mujawar
2026-04-22 12:40 ` Jason Gunthorpe [this message]
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