linux-kernel - [PATCH] LoongArch: eBPF: Restrict bpf_probe_read{, str}() only to archs where they work

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Message-Id: <20230726062902.566312-1-zhaochenguang@kylinos.cn>
Date:   Wed, 26 Jul 2023 14:29:02 +0800
From:   zhaochenguang <zhaochenguang@...inos.cn>
To:     chenhuacai@...nel.org
Cc:     kernel@...0n.name, loongarch@...ts.linux.dev,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        zhaochenguang@...inos.cn
Subject: [PATCH] LoongArch: eBPF: Restrict bpf_probe_read{, str}() only to archs where they work

When we run nettrace on LoongArch, there is a problem that
ERROR: failed to load kprobe-based eBPF
ERROR: failed to load kprobe-based bpf

Because ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE dose not exist,
so we enable it.

The patch reference upstream id 0ebeea8ca8a4d1d453ad299aef0507dab04f6e8d.

Signed-off-by: zhaochenguang <zhaochenguang@...inos.cn>
---
 arch/loongarch/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 903096bd87f8..4a156875e9cc 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -11,6 +11,7 @@ config LOONGARCH
 	select ARCH_ENABLE_MEMORY_HOTREMOVE
 	select ARCH_HAS_ACPI_TABLE_UPGRADE	if ACPI
 	select ARCH_HAS_PTE_SPECIAL
+	select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_INLINE_READ_LOCK if !PREEMPTION
 	select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION
-- 
2.25.1