linux-stable/arch/s390/pci/pci_kvm_hook.c
Pierre Morel ca922fecda KVM: s390: pci: Hook to access KVM lowlevel from VFIO
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: 09340b2fca ("KVM: s390: pci: add routines to start/stop interpretive execution")
Cc: <stable@vger.kernel.org>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://lore.kernel.org/r/20220819122945.9309-1-pmorel@linux.ibm.com
Message-Id: <20220819122945.9309-1-pmorel@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
2022-08-29 13:29:28 +02:00

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C

// SPDX-License-Identifier: GPL-2.0-only
/*
* VFIO ZPCI devices support
*
* Copyright (C) IBM Corp. 2022. All rights reserved.
* Author(s): Pierre Morel <pmorel@linux.ibm.com>
*/
#include <linux/kvm_host.h>
struct zpci_kvm_hook zpci_kvm_hook;
EXPORT_SYMBOL_GPL(zpci_kvm_hook);