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/hte/Kconfig | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 drivers/hte/Kconfig (limited to 'drivers/hte/Kconfig') diff --git a/drivers/hte/Kconfig b/drivers/hte/Kconfig new file mode 100644 index 000000000..f57bad67d --- /dev/null +++ b/drivers/hte/Kconfig @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig HTE + bool "Hardware Timestamping Engine (HTE) Support" + help + Hardware Timestamping Engine (HTE) Support. + + Some devices provide a hardware timestamping engine which can + timestamp certain device lines/signals in realtime. It comes with a + benefit for the applications needing accurate timestamping event with + less jitter. This framework provides a generic interface to such HTE + providers and consumer devices. + + If unsure, say no. + +if HTE + +config HTE_TEGRA194 + tristate "NVIDIA Tegra194 HTE Support" + depends on (ARCH_TEGRA || COMPILE_TEST) + depends on GPIOLIB + help + Enable this option for integrated hardware timestamping engine also + known as generic timestamping engine (GTE) support on NVIDIA Tegra194 + and later systems-on-chip. The driver supports 352 LIC IRQs and 39 + AON GPIOs lines for timestamping in realtime. + +config HTE_TEGRA194_TEST + tristate "NVIDIA Tegra194 HTE Test" + depends on (HTE_TEGRA194 || COMPILE_TEST) + help + The NVIDIA Tegra194 GTE test driver demonstrates how to use HTE + framework to timestamp GPIO and LIC IRQ lines. + +endif -- cgit v1.3.1