Commit de0e30be authored by Chenguang Zhao's avatar Chenguang Zhao Committed by Huacai Chen
Browse files

LoongArch: BPF: Enable bpf_probe_read{, str}() on LoongArch 



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 0ebeea8c ("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: default avatarChenguang Zhao <zhaochenguang@kylinos.cn>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
parent e66d511f

arch/loongarch/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ config LOONGARCH 
	select ARCH_HAS_CPU_FINALIZE_INIT

	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