linux-kernel - [PATCH ebpf v2 0/2] Unprivileged BPF default

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Date:   Wed, 27 Oct 2021 18:32:00 -0700
From:   Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Cc:     Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        antonio.gomez.iglesias@...el.com, tony.luck@...el.com,
        dave.hansen@...ux.intel.com
Subject: [PATCH ebpf v2 0/2] Unprivileged BPF default

Hi,

This is a two patch series to make the compile time default of
unprivileged BPF depend on CONFIG_CPU_SPECTRE. First patch makes ARM's
CONFIG_CPU_SPECTRE available for all architectures. The second patch
sets CONFIG_BPF_UNPRIV_DEFAULT_OFF=y by default when
CONFIG_CPU_SPECTRE=y.

v2:
- Generalize ARM's CONFIG_CPU_SPECTRE to be available for all architectures.
- Make CONFIG_BPF_UNPRIV_DEFAULT_OFF depend on CONFIG_CPU_SPECTRE.
- Updated commit message to reflect the dependency on CONFIG_CPU_SPECTRE.
- Add reference to BPF spectre presentation in commit message.

v1: https://lore.kernel.org/all/d37b01e70e65dced2659561ed5bc4b2ed1a50711.1635367330.git.pawan.kumar.gupta@linux.intel.com/

Pawan Gupta (2):
  arch/Kconfig: Make CONFIG_CPU_SPECTRE available for all architectures
  bpf: Make unprivileged bpf depend on CONFIG_CPU_SPECTRE

 arch/Kconfig        | 3 +++
 arch/arm/mm/Kconfig | 3 ---
 arch/x86/Kconfig    | 1 +
 kernel/bpf/Kconfig  | 5 +++++
 4 files changed, 9 insertions(+), 3 deletions(-)

-- 
2.31.1