From: Chenguang Zhao zhaochenguang@kylinos.cn
commit de0e30bee86d0f99c696a1fea34474e556a946ec upstream.
Currently nettrace does not work on LoongArch due to missing bpf_probe_read{,str}() support, with the error message:
ERROR: failed to load kprobe-based eBPF ERROR: failed to load kprobe-based bpf
According to commit 0ebeea8ca8a4d1d ("bpf: Restrict bpf_probe_read{, str}() only to archs where they work"), we only need to select CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE to add said support, because LoongArch does have non-overlapping address ranges for kernel and userspace.
Cc: stable@vger.kernel.org # 6.1 Signed-off-by: Chenguang Zhao zhaochenguang@kylinos.cn Signed-off-by: Huacai Chen chenhuacai@loongson.cn Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/loongarch/Kconfig | 1 + 1 file changed, 1 insertion(+)
--- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -12,6 +12,7 @@ config LOONGARCH select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS + select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_INLINE_READ_LOCK if !PREEMPTION