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

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Message-ID: <CAAhV-H5avspxtEQ7_bEXoLGK5q3AK0-nbw9JGs6QttkmLG5dYA@mail.gmail.com>
Date:   Thu, 27 Jul 2023 09:42:24 +0800
From:   Huacai Chen <chenhuacai@...nel.org>
To:     zhaochenguang <zhaochenguang@...inos.cn>
Cc:     kernel@...0n.name, loongarch@...ts.linux.dev,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH] LoongArch: eBPF: Restrict bpf_probe_read{, str}() only to
 archs where they work

Hi,

Usually, your E-mail format should be
Chenguang Zhao <zhaochenguang@...inos.cn>

Huacai

On Wed, Jul 26, 2023 at 2:29 PM zhaochenguang <zhaochenguang@...inos.cn> wrote:
>
> 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
>
>