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| author |  Chenguang Zhao <zhaochenguang@kylinos.cn>
| 2023-07-28 10:30:42 +0800 |
|---|---|---|
| committer |  Huacai Chen <chenhuacai@loongson.cn>
| 2023-07-28 10:30:42 +0800 |
| commit | de0e30bee86d0f99c696a1fea34474e556a946ec (patch) | |
| tree | bc7c34dec86efcce0d033b4eecc0cf33ff556b44 /arch/loongarch | |
| parent | LoongArch: Fix return value underflow in exception path (diff) | |
| download | linux-de0e30bee86d0f99c696a1fea34474e556a946ec.tar.gz linux-de0e30bee86d0f99c696a1fea34474e556a946ec.tar.bz2 linux-de0e30bee86d0f99c696a1fea34474e556a946ec.zip | |
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 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>
Diffstat (limited to 'arch/loongarch')
| -rw-r--r-- | arch/loongarch/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index e55511af4c77..e71d5bf2cee0 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -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 |