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/cache/Kconfig | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 drivers/cache/Kconfig (limited to 'drivers/cache/Kconfig') diff --git a/drivers/cache/Kconfig b/drivers/cache/Kconfig new file mode 100644 index 000000000..1518449d4 --- /dev/null +++ b/drivers/cache/Kconfig @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: GPL-2.0 + +menuconfig CACHEMAINT_FOR_DMA + bool "Cache management for noncoherent DMA" + depends on RISCV + default y + help + These drivers implement support for noncoherent DMA master devices + on platforms that lack the standard CPU interfaces for this. + +if CACHEMAINT_FOR_DMA + +config AX45MP_L2_CACHE + bool "Andes Technology AX45MP L2 Cache controller" + select RISCV_NONSTANDARD_CACHE_OPS + help + Support for the L2 cache controller on Andes Technology AX45MP platforms. + +config SIFIVE_CCACHE + bool "Sifive Composable Cache controller" + depends on ARCH_SIFIVE || ARCH_STARFIVE + help + Support for the composable cache controller on SiFive platforms. + +config STARFIVE_STARLINK_CACHE + bool "StarFive StarLink Cache controller" + depends on ARCH_STARFIVE + depends on 64BIT + select RISCV_DMA_NONCOHERENT + select RISCV_NONSTANDARD_CACHE_OPS + help + Support for the StarLink cache controller IP from StarFive. + +endif #CACHEMAINT_FOR_DMA + +menuconfig CACHEMAINT_FOR_HOTPLUG + bool "Cache management for memory hot plug like operations" + depends on GENERIC_CPU_CACHE_MAINTENANCE + help + These drivers implement cache management for flows where it is necessary + to flush data from all host caches. + +if CACHEMAINT_FOR_HOTPLUG + +config HISI_SOC_HHA + tristate "HiSilicon Hydra Home Agent (HHA) device driver" + depends on (ARM64 && ACPI) || COMPILE_TEST + help + The Hydra Home Agent (HHA) is responsible for cache coherency + on the SoC. This drivers enables the cache maintenance functions of + the HHA. + + This driver can be built as a module. If so, the module will be + called hisi_soc_hha. + +endif #CACHEMAINT_FOR_HOTPLUG -- cgit v1.3.1