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From: Paul Burton <>
To: Alexander Lobakin <>
Cc: Paul Burton <>
Cc: Ralf Baechle <>,
	James Hogan <>,
	Hassan Naveed <>,
	Alexei Starovoitov <>,
	Daniel Borkmann <>,
	Martin KaFai Lau <>, Song Liu <>,
	Yonghong Song <>, Andrii Nakryiko <>,
	Alexander Lobakin <>,,,,,
Subject: Re: [PATCH mips-fixes] MIPS: BPF: eBPF JIT: check for MIPS ISA compliance  in Kconfig
Date: Fri, 06 Dec 2019 11:18:47 -0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>


Alexander Lobakin wrote:
> It is completely wrong to check for compile-time MIPS ISA revision in
> the body of bpf_int_jit_compile() as it may lead to get MIPS JIT fully
> omitted by the CC while the rest system will think that the JIT is
> actually present and works [1].
> We can check if the selected CPU really supports MIPS eBPF JIT at
> configure time and avoid such situations when kernel can be built
> without both JIT and interpreter, but with CONFIG_BPF_SYSCALL=y.
> [1]

Applied to mips-fixes.

> commit 3721376d7d02
> Fixes: 716850ab104d ("MIPS: eBPF: Initial eBPF support for MIPS32 architecture.")
> Signed-off-by: Alexander Lobakin <>
> Signed-off-by: Paul Burton <>


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      reply	other threads:[~2019-12-06 19:18 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-06  8:07 Alexander Lobakin
2019-12-06 19:18 ` Paul Burton [this message]

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