From: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
To: linux-coco@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>,
Jason Gunthorpe <jgg@nvidia.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Greg KH <gregkh@linuxfoundation.org>,
Jeremy Linton <jeremy.linton@arm.com>,
Jonathan Cameron <jic23@kernel.org>,
Lorenzo Pieralisi <lpieralisi@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
Sudeep Holla <sudeep.holla@kernel.org>,
Will Deacon <will@kernel.org>,
Steven Price <steven.price@arm.com>,
Suzuki K Poulose <Suzuki.Poulose@arm.com>,
Andre Przywara <andre.przywara@arm.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
Nathan Chancellor <nathan@kernel.org>,
Nicolas Schier <nsc@kernel.org>,
Olivia Mackall <olivia@selenic.com>,
Russell King <linux@armlinux.org.uk>,
Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Subject: [PATCH v13 8/8] coco: guest: arm64: Remove dummy CCA platform device
Date: Wed, 23 Sep 2026 19:34:05 +0530 [thread overview]
Message-ID: <20260923140405.1111554-9-aneesh.kumar@kernel.org> (raw)
In-Reply-To: <20260923140405.1111554-1-aneesh.kumar@kernel.org>
The SMCCC firmware driver now creates the arm_smccc bus and instantiates
the CCA RSI device once the RSI ABI is discovered. The arm64-specific
arm-cca-dev platform device stub is therefore no longer needed.
Userspace now has /sys/firmware/cca/realm_guest as a dedicated CCA Realm
guest indicator. Remove the dummy arm-cca-dev registration.
Link: https://lore.kernel.org/all/4a7d84b2-2ec4-4773-a2d5-7b63d5c683cf@arm.com
Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
---
drivers/firmware/arm_rmm/rsi.c | 16 ----------------
1 file changed, 16 deletions(-)
diff --git a/drivers/firmware/arm_rmm/rsi.c b/drivers/firmware/arm_rmm/rsi.c
index 29eeb90ffc6b..0fcc4e33bd92 100644
--- a/drivers/firmware/arm_rmm/rsi.c
+++ b/drivers/firmware/arm_rmm/rsi.c
@@ -7,7 +7,6 @@
#include <linux/memblock.h>
#include <linux/psci.h>
#include <linux/swiotlb.h>
-#include <linux/platform_device.h>
#include <linux/arm-rsi-cmds.h>
#include <linux/kobject.h>
#include <linux/sysfs.h>
@@ -216,18 +215,3 @@ static int __init realm_sysfs_init(void)
return ret;
}
device_initcall(realm_sysfs_init);
-
-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:[~2026-09-23 14:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-23 14:03 [PATCH v13 0/8] Switch Arm SMCCC firmware services to an SMCCC bus Aneesh Kumar K.V (Arm)
2026-09-23 14:03 ` [PATCH v13 1/8] firmware: smccc: Add an Arm " Aneesh Kumar K.V (Arm)
2026-09-23 14:03 ` [PATCH v13 2/8] firmware: hwrng: arm_smccc_trng: Register as an SMCCC device Aneesh Kumar K.V (Arm)
2026-09-23 14:04 ` [PATCH v13 3/8] firmware: arm_rmm: Move RSI support out of arch/arm64 Aneesh Kumar K.V (Arm)
2026-09-23 14:04 ` [PATCH v13 4/8] arm64: realm: Move Realm memory encryption ops to RSI code Aneesh Kumar K.V (Arm)
2026-09-23 14:04 ` [PATCH v13 5/8] virt: coco: arm-cca-guest: Rename TSM report source file Aneesh Kumar K.V (Arm)
2026-09-23 14:04 ` [PATCH v13 6/8] firmware: smccc: arm-cca-guest: Bind the TSM provider to an SMCCC device Aneesh Kumar K.V (Arm)
2026-09-23 15:06 ` Suzuki K Poulose
2026-09-23 14:04 ` [PATCH v13 7/8] coco: guest: arm64: Add sysfs ABI for CCA Realm guests Aneesh Kumar K.V (Arm)
2026-09-23 15:08 ` Suzuki K Poulose
2026-09-23 14:04 ` Aneesh Kumar K.V (Arm) [this message]
2026-09-23 15:09 ` [PATCH v13 8/8] coco: guest: arm64: Remove dummy CCA platform device Suzuki K Poulose
2026-09-24 16:16 ` [PATCH v13 0/8] Switch Arm SMCCC firmware services to an SMCCC bus Catalin Marinas
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