linux-kernel - Re: [PATCH 13/32] KVM: s390: pci: add basic kvm

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Message-ID: <37b5de48-adef-225e-fafc-f918b64e7736@linux.ibm.com>
Date:   Fri, 17 Dec 2021 15:26:45 -0500
From:   Matthew Rosato <mjrosato@...ux.ibm.com>
To:     linux-s390@...r.kernel.org
Cc:     alex.williamson@...hat.com, cohuck@...hat.com,
        schnelle@...ux.ibm.com, farman@...ux.ibm.com, pmorel@...ux.ibm.com,
        borntraeger@...ux.ibm.com, hca@...ux.ibm.com, gor@...ux.ibm.com,
        gerald.schaefer@...ux.ibm.com, agordeev@...ux.ibm.com,
        frankja@...ux.ibm.com, david@...hat.com, imbrenda@...ux.ibm.com,
        vneethv@...ux.ibm.com, oberpar@...ux.ibm.com, freude@...ux.ibm.com,
        thuth@...hat.com, pasic@...ux.ibm.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 13/32] KVM: s390: pci: add basic kvm_zdev structure

On 12/7/21 3:57 PM, Matthew Rosato wrote:
> This structure will be used to carry kvm passthrough information related to
> zPCI devices.
> 
> Signed-off-by: Matthew Rosato <mjrosato@...ux.ibm.com>
> ---
...
>   static inline bool zdev_enabled(struct zpci_dev *zdev)
> diff --git a/arch/s390/kvm/Makefile b/arch/s390/kvm/Makefile
> index b3aaadc60ead..95ea865e5d29 100644
> --- a/arch/s390/kvm/Makefile
> +++ b/arch/s390/kvm/Makefile
> @@ -10,6 +10,6 @@ common-objs = $(KVM)/kvm_main.o $(KVM)/eventfd.o  $(KVM)/async_pf.o \
>   ccflags-y := -Ivirt/kvm -Iarch/s390/kvm
>   
>   kvm-objs := $(common-objs) kvm-s390.o intercept.o interrupt.o priv.o sigp.o
> -kvm-objs += diag.o gaccess.o guestdbg.o vsie.o pv.o
> +kvm-objs += diag.o gaccess.o guestdbg.o vsie.o pv.o pci.o

This should instead be

kvm-objs-$(CONFIG_PCI) += pci.o

I think this makes sense as we aren't about to do PCI passthrough 
support anyway if the host kernel doesn't support PCI (no vfio-pci, 
etc).   This will quiet the kernel test robot complaints about 
CONFIG_PCI_NR_FUNCTIONS seen on the next patch in this series.

>   
>   obj-$(CONFIG_KVM) += kvm.o