Re: [PATCH 12/12] vfio/pci: Introduce vfio_pci_core.ko

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On Wed, Jul 28, 2021 at 02:29:56PM +0200, Christoph Hellwig wrote:

> So not really an issue here.  VFIO_PCI_CORE really is underlying
> infrastructure a user should not care about.

So then we can write it like below? Unfortunately it deletes the nice
menu structure that groups all the PCI drivers together like platform
(and mdev in future). Not sure this loss is worth the backwards compat

diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig
index 318116d03c21a4..2611d7d91ddbd5 100644
--- a/drivers/vfio/pci/Kconfig
+++ b/drivers/vfio/pci/Kconfig
@@ -1,14 +1,12 @@
 # SPDX-License-Identifier: GPL-2.0-only
+if PCI || MMU
 config VFIO_PCI_CORE
-	tristate "VFIO support for PCI devices"
-	depends on PCI
-	depends on MMU
+	tristate
 	select VFIO_VIRQFD
 	select IRQ_BYPASS_MANAGER
 	help
 	  Support for using PCI devices with VFIO.
 
-if VFIO_PCI_CORE
 config VFIO_PCI_MMAP
 	def_bool y if !S390
 
@@ -17,6 +15,7 @@ config VFIO_PCI_INTX
 
 config VFIO_PCI
 	tristate "Generic VFIO support for any PCI device"
+	select VFIO_PCI_CORE
 	help
 	  Support for the generic PCI VFIO bus driver which can connect any
 	  PCI device to the VFIO framework.
@@ -50,6 +49,7 @@ endif
 config MLX5_VFIO_PCI
 	tristate "VFIO support for MLX5 PCI devices"
 	depends on MLX5_CORE
+	select VFIO_PCI_CORE
 	help
 	  This provides a PCI support for MLX5 devices using the VFIO
 	  framework. The device specific driver supports suspend/resume



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