Re: [PATCH v2] KVM: s390: pci: Hook to access KVM lowlevel from VFIO

[Janosch Frank <frankja@linux.ibm.com>]

On 8/19/22 14:29, Pierre Morel wrote:
> We have a cross dependency between KVM and VFIO when using
> s390 vfio_pci_zdev extensions for PCI passthrough
> To be able to keep both subsystem modular we add a registering
> hook inside the S390 core code.
> 
> This fixes a build problem when VFIO is built-in and KVM is built
> as a module.
> 
> Reported-by: Randy Dunlap <rdunlap@infradead.org>
> Reported-by: kernel test robot <lkp@intel.com>
> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
> Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> Fixes: 09340b2fca007 ("KVM: s390: pci: add routines to start/stop interpretive execution")
> Cc: <stable@vger.kernel.org>

Acked-by: Janosch Frank <frankja@linux.ibm.com>

@Niklas @Matt: Since the patches that introduced the PCI interpretation 
went via the KVM tree I'll also move this patch via the KVM tree.