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Date:   Fri, 8 Dec 2023 14:40:41 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc:     Jiri Olsa <olsajiri@gmail.com>, Song Liu <song@kernel.org>,
        Song Liu <songliubraving@meta.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
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        Albert Ou <aou@eecs.berkeley.edu>,
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        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        X86 ML <x86@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
        "David S. Miller" <davem@davemloft.net>,
        David Ahern <dsahern@kernel.org>,
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Subject: Re: [PATCH v2 2/2] x86/cfi,bpf: Fix BPF JIT call
Message-ID: <20231208134041.GD28727@noisy.programming.kicks-ass.net>
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On Fri, Dec 08, 2023 at 11:29:40AM +0100, Peter Zijlstra wrote:
> The only problem I now have is the one XXX, I'm not entirely sure what
> signature to use there.

> @@ -119,6 +119,7 @@ int bpf_struct_ops_test_run(struct bpf_p
>  	op_idx = prog->expected_attach_type;
>  	err = bpf_struct_ops_prepare_trampoline(tlinks, link,
>  						&st_ops->func_models[op_idx],
> +						/* XXX */ NULL,
>  						image, image + PAGE_SIZE);
>  	if (err < 0)
>  		goto out;

Duh, that should ofcourse be something of dummy_ops_test_ret_fn type.
Let me go fix that.