linux-kernel - Re: [PATCH v4 14/18] nitro_enclaves: Add Kconfig for the Nitro Enclaves driver

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Date:   Mon, 6 Jul 2020 13:28:45 +0200
From:   Alexander Graf <graf@...zon.de>
To:     Andra Paraschiv <andraprs@...zon.com>,
        <linux-kernel@...r.kernel.org>
CC:     Anthony Liguori <aliguori@...zon.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Colm MacCarthaigh <colmmacc@...zon.com>,
        "Bjoern Doebel" <doebel@...zon.de>,
        David Woodhouse <dwmw@...zon.co.uk>,
        "Frank van der Linden" <fllinden@...zon.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Martin Pohlack <mpohlack@...zon.de>,
        Matt Wilson <msw@...zon.com>,
        "Paolo Bonzini" <pbonzini@...hat.com>,
        Balbir Singh <sblbir@...zon.com>,
        "Stefano Garzarella" <sgarzare@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Stewart Smith <trawets@...zon.com>,
        Uwe Dannowski <uwed@...zon.de>, <kvm@...r.kernel.org>,
        <ne-devel-upstream@...zon.com>
Subject: Re: [PATCH v4 14/18] nitro_enclaves: Add Kconfig for the Nitro
 Enclaves driver



On 22.06.20 22:03, Andra Paraschiv wrote:
> Signed-off-by: Andra Paraschiv <andraprs@...zon.com>
> ---
> Changelog
> 
> v3 -> v4
> 
> * Add PCI and SMP dependencies.
> 
> v2 -> v3
> 
> * Remove the GPL additional wording as SPDX-License-Identifier is
>    already in place.
> 
> v1 -> v2
> 
> * Update path to Kconfig to match the drivers/virt/nitro_enclaves
>    directory.
> * Update help in Kconfig.
> ---
>   drivers/virt/Kconfig                |  2 ++
>   drivers/virt/nitro_enclaves/Kconfig | 16 ++++++++++++++++
>   2 files changed, 18 insertions(+)
>   create mode 100644 drivers/virt/nitro_enclaves/Kconfig
> 
> diff --git a/drivers/virt/Kconfig b/drivers/virt/Kconfig
> index cbc1f25c79ab..80c5f9c16ec1 100644
> --- a/drivers/virt/Kconfig
> +++ b/drivers/virt/Kconfig
> @@ -32,4 +32,6 @@ config FSL_HV_MANAGER
>   	     partition shuts down.
>   
>   source "drivers/virt/vboxguest/Kconfig"
> +
> +source "drivers/virt/nitro_enclaves/Kconfig"
>   endif
> diff --git a/drivers/virt/nitro_enclaves/Kconfig b/drivers/virt/nitro_enclaves/Kconfig
> new file mode 100644
> index 000000000000..69e41aa2222d
> --- /dev/null
> +++ b/drivers/virt/nitro_enclaves/Kconfig
> @@ -0,0 +1,16 @@
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
> +
> +# Amazon Nitro Enclaves (NE) support.
> +# Nitro is a hypervisor that has been developed by Amazon.
> +
> +config NITRO_ENCLAVES
> +	tristate "Nitro Enclaves Support"
> +	depends on HOTPLUG_CPU && PCI && SMP

Let's also depend on ARM64 || X86, so that we don't burden all of the 
other archs that are not available in EC2 today with an additional 
config option to think about.

Alex



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