Re: [PATCH v3] drivers/virtio: Enable virtio mem for ARM64

["Michael S. Tsirkin" <mst@redhat.com>]

On Wed, Jan 19, 2022 at 09:05:51AM +0800, Gavin Shan wrote:
> This enables virtio-mem device support by allowing to enable the
> corresponding kernel config option (CONFIG_VIRTIO_MEM) on the
> architecture.
> 
> Signed-off-by: Gavin Shan <gshan@redhat.com>
> Acked-by: David Hildenbrand <david@redhat.com>
> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Acked-by: Michael S. Tsirkin <mst@redhat.com>
> ---
> v3: Pick ack-by tags from Jonathan and Michael
> ---
>  drivers/virtio/Kconfig | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig
> index 34f80b7a8a64..74c8b0c7bc33 100644
> --- a/drivers/virtio/Kconfig
> +++ b/drivers/virtio/Kconfig
> @@ -106,7 +106,7 @@ config VIRTIO_BALLOON
>  config VIRTIO_MEM
>  	tristate "Virtio mem driver"
>  	default m
> -	depends on X86_64
> +	depends on X86_64 || ARM64
>  	depends on VIRTIO
>  	depends on MEMORY_HOTPLUG
>  	depends on MEMORY_HOTREMOVE
> @@ -116,8 +116,9 @@ config VIRTIO_MEM
>  	 This driver provides access to virtio-mem paravirtualized memory
>  	 devices, allowing to hotplug and hotunplug memory.
>  
> -	 This driver was only tested under x86-64, but should theoretically
> -	 work on all architectures that support memory hotplug and hotremove.
> +	 This driver was only tested under x86-64 and arm64, but should
> +	 theoretically work on all architectures that support memory hotplug
> +	 and hotremove.
>  

BTW isn't there a symbol saying "memory hotplug" that we can depend on?


>  	 If unsure, say M.
>  
> -- 
> 2.23.0

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