linux-kernel - Re: [PATCH v1 1/3] nitro_enclaves: Enable Arm support

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Message-ID: <YSilmGyvEAc46ujH@kroah.com>
Date:   Fri, 27 Aug 2021 10:43:04 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Andra Paraschiv <andraprs@...zon.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Alexandru Ciobotaru <alcioa@...zon.com>,
        Kamal Mostafa <kamal@...onical.com>,
        Alexandru Vasile <lexnv@...zon.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Stefano Garzarella <sgarzare@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        kvm <kvm@...r.kernel.org>,
        ne-devel-upstream <ne-devel-upstream@...zon.com>
Subject: Re: [PATCH v1 1/3] nitro_enclaves: Enable Arm support

On Thu, Aug 26, 2021 at 08:34:49PM +0300, Andra Paraschiv wrote:
> Update the kernel config to enable the Nitro Enclaves kernel driver for
> Arm support.
> 
> Signed-off-by: Andra Paraschiv <andraprs@...zon.com>
> ---
>  drivers/virt/nitro_enclaves/Kconfig | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/virt/nitro_enclaves/Kconfig b/drivers/virt/nitro_enclaves/Kconfig
> index 8c9387a232df8..f53740b941c0f 100644
> --- a/drivers/virt/nitro_enclaves/Kconfig
> +++ b/drivers/virt/nitro_enclaves/Kconfig
> @@ -1,17 +1,13 @@
>  # SPDX-License-Identifier: GPL-2.0
>  #
> -# Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
> +# Copyright 2020-2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
>  
>  # Amazon Nitro Enclaves (NE) support.
>  # Nitro is a hypervisor that has been developed by Amazon.
>  
> -# TODO: Add dependency for ARM64 once NE is supported on Arm platforms. For now,
> -# the NE kernel driver can be built for aarch64 arch.
> -# depends on (ARM64 || X86) && HOTPLUG_CPU && PCI && SMP
> -
>  config NITRO_ENCLAVES
>  	tristate "Nitro Enclaves Support"
> -	depends on X86 && HOTPLUG_CPU && PCI && SMP
> +	depends on (ARM64 || X86) && HOTPLUG_CPU && PCI && SMP

So no code change needed?  If not, they why do we have a cpu type at all
here?

thanks,

greg k-h