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Date:   Wed, 27 Jan 2021 10:30:56 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Yonghong Song <yhs@fb.com>
Cc:     bpf@vger.kernel.org, Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>, kernel-team@fb.com,
        x86@kernel.org, KP Singh <kpsingh@kernel.org>
Subject: Re: [PATCH bpf] x86/bpf: handle bpf-program-triggered exceptions
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On Tue, Jan 26, 2021 at 11:21:01AM -0800, Yonghong Song wrote:
> Do we have any x64 cpus which does not support X86_FEATURE_SMAP?

x64 is not an achitecture I know of. If you typoed x86_64 then sure, I
think SMAP is fairly recent, Wikipedia seems to suggest Broadwell and
later. AMD seems to sport it since Zen.