linux-kernel - Re: [PATCH bpf-next v7 13/24] HID: initial BPF implementation

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Date:   Wed, 24 Aug 2022 11:41:28 +0200
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Jiri Kosina <jikos@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Kumar Kartikeya Dwivedi <memxor@...il.com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, Shuah Khan <shuah@...nel.org>,
        Dave Marchevsky <davemarchevsky@...com>,
        Joe Stringer <joe@...ium.io>, Jonathan Corbet <corbet@....net>,
        Tero Kristo <tero.kristo@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH bpf-next v7 13/24] HID: initial BPF implementation

Hi Greg,

On 7/28/22 16:15, Greg KH wrote:
> On Thu, Jul 21, 2022 at 05:36:14PM +0200, Benjamin Tissoires wrote:
>> diff --git a/drivers/hid/bpf/Kconfig b/drivers/hid/bpf/Kconfig
>> new file mode 100644
>> index 000000000000..423c02e4c5db
>> --- /dev/null
>> +++ b/drivers/hid/bpf/Kconfig
>> @@ -0,0 +1,18 @@
>> +# SPDX-License-Identifier: GPL-2.0-only
>> +menu "HID-BPF support"
>> +	#depends on x86_64
> 
> Is this comment still needed?

Nope. It was required a few months ago, but I think we now have 
trampoline support also for aarch64, which are the 2 main architectures 
we care right now.

Dropping this from the series.

Cheers,
Benjamin

> 
>> +
>> +config HID_BPF
>> +	bool "HID-BPF support"
>> +	default HID_SUPPORT
>> +	depends on BPF && BPF_SYSCALL
>> +	help
>> +	This option allows to support eBPF programs on the HID subsystem.
>> +	eBPF programs can fix HID devices in a lighter way than a full
>> +	kernel patch and allow a lot more flexibility.
>> +
>> +	For documentation, see Documentation/hid/hid-bpf.rst
>> +
>> +	If unsure, say Y.
>> +
>> +endmenu
>