From: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
To: linux-coco@lists.linux.dev, kvmarm@lists.linux.dev
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
dan.j.williams@intel.com, aik@amd.com, lukas@wunner.de,
Samuel Ortiz <sameo@rivosinc.com>,
Xu Yilun <yilun.xu@linux.intel.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Suzuki K Poulose <Suzuki.Poulose@arm.com>,
Steven Price <steven.price@arm.com>,
Bjorn Helgaas <helgaas@kernel.org>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
"Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
Subject: [PATCH 03/12] coco: guest: arm64: Drop dummy RSI platform device stub
Date: Mon, 27 Oct 2025 15:18:54 +0530 [thread overview]
Message-ID: <20251027094916.1153143-3-aneesh.kumar@kernel.org> (raw)
In-Reply-To: <20251027094916.1153143-1-aneesh.kumar@kernel.org>
The SMCCC firmware driver now creates the `arm-smccc` platform device
and also creates the CCA auxiliary devices once the RSI ABI is
discovered. This makes the arch-specific arm64_create_dummy_rsi_dev()
helper redundant. Remove the arm-cca-dev platform device registration
and let the SMCCC probe manage the RSI device.
systemd match on platform:arm-cca-dev for confidential vm detection [1].
Losing the platform device registration can break that. Keeping this
removal in its own change makes it easy to revert if that regression
blocks the rollout.
[1] https://lore.kernel.org/all/4a7d84b2-2ec4-4773-a2d5-7b63d5c683cf@arm.com
Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
---
arch/arm64/kernel/rsi.c | 15 ---------------
1 file changed, 15 deletions(-)
diff --git a/arch/arm64/kernel/rsi.c b/arch/arm64/kernel/rsi.c
index 5d711942e543..1b716d18b80e 100644
--- a/arch/arm64/kernel/rsi.c
+++ b/arch/arm64/kernel/rsi.c
@@ -158,18 +158,3 @@ void __init arm64_rsi_init(void)
static_branch_enable(&rsi_present);
}
-
-static struct platform_device rsi_dev = {
- .name = "arm-cca-dev",
- .id = PLATFORM_DEVID_NONE
-};
-
-static int __init arm64_create_dummy_rsi_dev(void)
-{
- if (is_realm_world() &&
- platform_device_register(&rsi_dev))
- pr_err("failed to register rsi platform device\n");
- return 0;
-}
-
-arch_initcall(arm64_create_dummy_rsi_dev)
--
2.43.0
next prev parent reply other threads:[~2025-10-27 9:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-27 9:48 [PATCH 01/12] KVM: arm64: RMI: Export kvm_has_da_feature Aneesh Kumar K.V (Arm)
2025-10-27 9:48 ` [PATCH 02/12] firmware: smccc: coco: Manage arm-smccc platform device and CCA auxiliary drivers Aneesh Kumar K.V (Arm)
2025-10-27 9:48 ` Aneesh Kumar K.V (Arm) [this message]
2025-10-27 9:48 ` [PATCH 04/12] coco: host: arm64: Add host TSM callback and IDE stream allocation support Aneesh Kumar K.V (Arm)
2025-10-27 9:48 ` [PATCH 05/12] coco: host: arm64: Build and register RMM pdev descriptors Aneesh Kumar K.V (Arm)
2025-10-27 9:48 ` [PATCH 06/12] coco: host: arm64: Add RMM device communication helpers Aneesh Kumar K.V (Arm)
2025-10-27 9:48 ` [PATCH 07/12] coco: host: arm64: Add helper to stop and tear down an RMM pdev Aneesh Kumar K.V (Arm)
2025-10-27 9:48 ` [PATCH 08/12] coco: host: arm64: Instantiate RMM pdev during device connect Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH 09/12] X.509: Make certificate parser public Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH 10/12] X.509: Parse Subject Alternative Name in certificates Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH 11/12] X.509: Move certificate length retrieval into new helper Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH 12/12] coco: host: arm64: Register device public key with RMM Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH v2 00/12] coc: tsm: Implement ->connect()/->disconnect() callbacks for ARM CCA IDE setup Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH v2 01/12] KVM: arm64: RMI: Export kvm_has_da_feature Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH v2 02/12] firmware: smccc: coco: Manage arm-smccc platform device and CCA auxiliary drivers Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH v2 03/12] coco: guest: arm64: Drop dummy RSI platform device stub Aneesh Kumar K.V (Arm)
2025-10-27 9:49 ` [PATCH v2 04/12] coco: host: arm64: Add host TSM callback and IDE stream allocation support Aneesh Kumar K.V (Arm)
2025-10-27 10:03 ` [PATCH 01/12] KVM: arm64: RMI: Export kvm_has_da_feature Aneesh Kumar K.V
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20251027094916.1153143-3-aneesh.kumar@kernel.org \
--to=aneesh.kumar@kernel.org \
--cc=Jonathan.Cameron@huawei.com \
--cc=Suzuki.Poulose@arm.com \
--cc=aik@amd.com \
--cc=catalin.marinas@arm.com \
--cc=dan.j.williams@intel.com \
--cc=helgaas@kernel.org \
--cc=jgg@ziepe.ca \
--cc=kvmarm@lists.linux.dev \
--cc=linux-coco@lists.linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=lukas@wunner.de \
--cc=maz@kernel.org \
--cc=oliver.upton@linux.dev \
--cc=sameo@rivosinc.com \
--cc=steven.price@arm.com \
--cc=will@kernel.org \
--cc=yilun.xu@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).