kernel/arch/s390/include/uapi/asm/uvdevice.h, branch linux-rolling-stable

s390/uvdevice: Increase indent in IOCTL definitions

2024-10-29T10:17:17Z

Increase the indentations in the IOCTL defines so that we will not have problems with upcoming, longer constant names. While at it, fix a minor typo. Reviewed-by: Janosch Frank Reviewed-by: Christoph Schlameuss Signed-off-by: Steffen Eiden Link: https://lore.kernel.org/r/20241024062638.1465970-5-seiden@linux.ibm.com Signed-off-by: Janosch Frank Signed-off-by: Heiko Carstens

s390/uvdevice: Add Retrieve Secret IOCTL

2024-10-29T10:17:16Z

Add a new IOCL number to support the new Retrieve Secret UVC for user-space. User-space provides the index of the secret (u16) to retrieve. The uvdevice calls the Retrieve Secret UVC and copies the secret into the provided buffer if it fits. To get the secret type, index, and size user-space needs to call the List UVC first. Reviewed-by: Christoph Schlameuss Reviewed-by: Janosch Frank Signed-off-by: Steffen Eiden Link: https://lore.kernel.org/r/20241024062638.1465970-4-seiden@linux.ibm.com Signed-off-by: Janosch Frank Signed-off-by: Heiko Carstens

s390/uvdevice: Add 'Lock Secret Store' UVC

2023-06-16T09:08:09Z

Userspace can call the Lock Secret Store Ultravisor Call using IOCTLs on the uvdevice. The Lock Secret Store UV call disables all additions of secrets for the future. The uvdevice is merely transporting the request from userspace to the Ultravisor. Signed-off-by: Steffen Eiden Reviewed-by: Janosch Frank Link: https://lore.kernel.org/r/20230615100533.3996107-6-seiden@linux.ibm.com Signed-off-by: Janosch Frank Message-Id: <20230615100533.3996107-6-seiden@linux.ibm.com>

s390/uvdevice: Add 'List Secrets' UVC

2023-06-16T09:08:09Z

Userspace can call the List Secrets Ultravisor Call using IOCTLs on the uvdevice. The List Secrets UV call lists the identifier of the secrets in the UV secret store. The uvdevice is merely transporting the request from userspace to Ultravisor. It's neither checking nor manipulating the request or response data. Signed-off-by: Steffen Eiden Reviewed-by: Janosch Frank Link: https://lore.kernel.org/r/20230615100533.3996107-5-seiden@linux.ibm.com Signed-off-by: Janosch Frank Message-Id: <20230615100533.3996107-5-seiden@linux.ibm.com>

s390/uvdevice: Add 'Add Secret' UVC

2023-06-16T09:08:09Z

Userspace can call the Add Secret Ultravisor Call using IOCTLs on the uvdevice. The Add Secret UV call sends an encrypted and cryptographically verified request to the Ultravisor. The request inserts a protected guest's secret into the Ultravisor for later use. The uvdevice is merely transporting the request from userspace to the Ultravisor. It's neither checking nor manipulating the request data. Signed-off-by: Steffen Eiden Reviewed-by: Janosch Frank Link: https://lore.kernel.org/r/20230615100533.3996107-4-seiden@linux.ibm.com Signed-off-by: Janosch Frank Message-Id: <20230615100533.3996107-4-seiden@linux.ibm.com>

s390/uvdevice: Add info IOCTL

2023-06-16T09:08:09Z

Add an IOCTL that allows userspace to find out which IOCTLs the uvdevice supports without trial and error. Explicitly expose the IOCTL nr for the request types. Signed-off-by: Steffen Eiden Reviewed-by: Janosch Frank Link: https://lore.kernel.org/r/20230615100533.3996107-3-seiden@linux.ibm.com Signed-off-by: Janosch Frank Message-Id: <20230615100533.3996107-3-seiden@linux.ibm.com>

drivers/s390/char: Add Ultravisor io device

2022-05-20T14:38:35Z

This patch adds a new miscdevice to expose some Ultravisor functions to userspace. Userspace can send IOCTLs to the uvdevice that will then emit a corresponding Ultravisor Call and hands the result over to userspace. The uvdevice is available if the Ultravisor Call facility is present. Userspace can call the Retrieve Attestation Measurement Ultravisor Call using IOCTLs on the uvdevice. The uvdevice will do some sanity checks first. Then, copy the request data to kernel space, build the UVCB, perform the UV call, and copy the result back to userspace. Signed-off-by: Steffen Eiden Reviewed-by: Janosch Frank Reviewed-by: Claudio Imbrenda Link: https://lore.kernel.org/kvm/20220516113335.338212-1-seiden@linux.ibm.com/ Message-Id: <20220516113335.338212-1-seiden@linux.ibm.com> Signed-off-by: Janosch Frank (whitespace and tristate fixes, pick)