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Subject: Re: [PATCH V9 1/9] vhost: refine vhost and vringh kconfig
To:     "Michael S. Tsirkin" <mst@redhat.com>
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From:   Jason Wang <jasowang@redhat.com>
Message-ID: <51e43cc8-63fe-94c1-54f6-1200e5ef772d@redhat.com>
Date:   Wed, 1 Apr 2020 22:39:34 +0800
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On 2020/4/1 =E4=B8=8B=E5=8D=8810:35, Michael S. Tsirkin wrote:
>> diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
>> index 2523a1d4290a..362b832f5338 100644
>> --- a/drivers/vhost/Kconfig
>> +++ b/drivers/vhost/Kconfig
>> @@ -11,19 +11,23 @@ config VHOST_RING
>>   	  This option is selected by any driver which needs to access
>>   	  the host side of a virtio ring.
>>  =20
>> -menuconfig VHOST
>> -	tristate "Host kernel accelerator for virtio (VHOST)"
>> -	depends on EVENTFD
>> +config VHOST
>> +	tristate
>>   	select VHOST_IOTLB
>>   	help
>>   	  This option is selected by any driver which needs to access
>>   	  the core of vhost.
>>  =20
>> -if VHOST
>> +menuconfig VHOST_MENU
>> +	bool "VHOST drivers"
>> +	default y
>> +
>> +if VHOST_MENU
> Will this not still have the problem with defconfigs? They don't set
> VHOST_MENU ...


Looks not, since it was enabled by default.

I tested this on s390/ppc defconfigs:

# make ARCH=3Ds390 defconfig
*** Default configuration is based on 'defconfig'
#
# No change to .config
#
# grep CONFIG_VHOST .config
CONFIG_VHOST_IOTLB=3Dm
CONFIG_VHOST=3Dm
CONFIG_VHOST_MENU=3Dy
CONFIG_VHOST_NET=3Dm
CONFIG_VHOST_VSOCK=3Dm
# CONFIG_VHOST_VDPA is not set
# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set

Thanks