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Date:   Tue, 23 Aug 2022 09:25:27 +0200
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To:     Pierre Morel <pmorel@linux.ibm.com>, mjrosato@linux.ibm.com
Cc:     rdunlap@infradead.org, linux-kernel@vger.kernel.org, lkp@intel.com,
        borntraeger@linux.ibm.com, farman@linux.ibm.com,
        linux-s390@vger.kernel.org, kvm@vger.kernel.org, gor@linux.ibm.com,
        hca@linux.ibm.com, schnelle@linux.ibm.com,
        alex.williamson@redhat.com, cohuck@redhat.com
References: <20220819122945.9309-1-pmorel@linux.ibm.com>
From:   Janosch Frank <frankja@linux.ibm.com>
Subject: Re: [PATCH v2] KVM: s390: pci: Hook to access KVM lowlevel from VFIO
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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.