From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- drivers/firmware/smccc/Kconfig | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 drivers/firmware/smccc/Kconfig (limited to 'drivers/firmware/smccc/Kconfig') diff --git a/drivers/firmware/smccc/Kconfig b/drivers/firmware/smccc/Kconfig new file mode 100644 index 000000000..15e746617 --- /dev/null +++ b/drivers/firmware/smccc/Kconfig @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: GPL-2.0-only +config HAVE_ARM_SMCCC + bool + help + Include support for the Secure Monitor Call (SMC) and Hypervisor + Call (HVC) instructions on Armv7 and above architectures. + +config HAVE_ARM_SMCCC_DISCOVERY + bool + depends on ARM_PSCI_FW + default y + help + SMCCC v1.0 lacked discoverability and hence PSCI v1.0 was updated + to add SMCCC discovery mechanism though the PSCI firmware + implementation of PSCI_FEATURES(SMCCC_VERSION) which returns + success on firmware compliant to SMCCC v1.1 and above. + +config ARM_SMCCC_SOC_ID + bool "SoC bus device for the ARM SMCCC SOC_ID" + depends on HAVE_ARM_SMCCC_DISCOVERY + default y + select SOC_BUS + help + Include support for the SoC bus on the ARM SMCCC firmware based + platforms providing some sysfs information about the SoC variant. -- cgit v1.3.1