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Date:   Wed, 22 Nov 2023 13:54:13 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Alexei Starovoitov <alexei.starovoitov@gmail.com>
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Subject: Re: [PATCH 2/2] x86/cfi,bpf: Fix BPF JIT call
Message-ID: <20231122125413.GQ4779@noisy.programming.kicks-ass.net>
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On Wed, Nov 22, 2023 at 01:41:34PM +0100, Peter Zijlstra wrote:
> +#ifdef CONFIG_FINEIBT
> +	/*
> +	 * When FineIBT, code in the __cfi_foo() symbols can get executed
> +	 * and hence unwinder needs help.
> +	 */
> +	if (cfi_mode != CFI_FINEIBT)
> +		return;
> +
> +	snprintf(fp->aux->ksym_prefix.name, KSYM_NAME_LEN,
> +		 "__cfi_%s", fp->aux->ksym.name);
> +
> +	prog->aux->ksym_prefix.start = (unsigned long) prog->bpf_func - 16;
> +	prog->aux->ksym_prefix.end   = (unsigned long) prog->bpf_func;
> +
> +	bpf_ksym_add(&fp->aux->ksym_prefix);
> +#endif
>  }

s/prog/fp/ makes compiler happier