linux-kernel - Re: [PATCH] virtio: don't prompt CONFIG_VIRTIO_PCI

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Date:   Mon, 22 Feb 2021 17:06:34 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Guenter Roeck <linux@...ck-us.net>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Anders Roxell <anders.roxell@...aro.org>
Subject: Re: [PATCH] virtio: don't prompt CONFIG_VIRTIO_PCI_MODERN


On 2021/2/22 3:29 下午, Michael S. Tsirkin wrote:
> On Mon, Feb 22, 2021 at 11:42:44AM +0800, Jason Wang wrote:
>> On 2021/2/19 11:38 下午, Guenter Roeck wrote:
>>> On 2/19/21 12:45 AM, Jason Wang wrote:
>>>> We used to prompt CONFIG_VIRTIO_PCI_MODERN to user which may bring a
>>>> lot of confusion. E.g it may break various default configs which want
>>>> virtio devices.
>>>>
>>>> So this patch fixes this by hide the prompot and document the
>>> ... by hiding the prompt and documenting ...
>>
>> Hi Michael:
>>
>> Would you like me to post a new version or you can fix those typos when
>> applying the patch?
>>
>> Thanks
>
> A new version. However I have a suggestion.
>
> How about we call the new library VIRTIO_PCI_LIB? That would be
> a new auto-selected symbol.
>
> We can then keep VIRTIO_PCI as a symbol enabling the actual driver.


Ok, will do.

Thanks


>
>
>
>>>> dependency.
>>>>
>>>> Cc: Arnd Bergmann <arnd@...db.de>
>>>> Cc: Anders Roxell <anders.roxell@...aro.org>
>>>> Cc: Guenter Roeck <linux@...ck-us.net>
>>>> Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
>>>> Fixes: 86b87c9d858b6 ("virtio-pci: introduce modern device module")
>>>> Signed-off-by: Jason Wang <jasowang@...hat.com>
>>> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
>>>
>>>> ---
>>>>    drivers/virtio/Kconfig | 9 +++++----
>>>>    1 file changed, 5 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig
>>>> index 6b9b81f4b8c2..be7df369bc2b 100644
>>>> --- a/drivers/virtio/Kconfig
>>>> +++ b/drivers/virtio/Kconfig
>>>> @@ -13,12 +13,12 @@ config ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS
>>>>    	  VIRTIO_F_ACCESS_PLATFORM
>>>>    config VIRTIO_PCI_MODERN
>>>> -	tristate "Modern Virtio PCI Device"
>>>> -	depends on PCI
>>>> +	tristate
>>>>    	help
>>>>    	  Modern PCI device implementation. This module implements the
>>>>    	  basic probe and control for devices which are based on modern
>>>> -	  PCI device with possible vendor specific extensions.
>>>> +	  PCI device with possible vendor specific extensions. Any
>>>> +	  module that selects this module must depend on PCI.
>>>>    menuconfig VIRTIO_MENU
>>>>    	bool "Virtio drivers"
>>>> @@ -28,7 +28,8 @@ if VIRTIO_MENU
>>>>    config VIRTIO_PCI
>>>>    	tristate "PCI driver for virtio devices"
>>>> -	depends on VIRTIO_PCI_MODERN
>>>> +	depends on PCI
>>>> +	select VIRTIO_PCI_MODERN
>>>>    	select VIRTIO
>>>>    	help
>>>>    	  This driver provides support for virtio based paravirtual device
>>>>