| Message ID | 20230704093204.2579133-1-clg@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | kconfig: Add PCIe devices to s390xx machines | expand |
On 04/07/2023 11.32, Cédric Le Goater wrote: > It is useful to extend the number of available PCI devices to KVM guests > for passthrough scenarios and also to expose these models to a different > (big endian) architecture. Maybe mention that these devices can work on s390x since they support MSI-X ? (While most of the other devices don't work on s390x since they only support legacy interrupts) > Signed-off-by: Cédric Le Goater <clg@redhat.com> > --- > hw/s390x/Kconfig | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/hw/s390x/Kconfig b/hw/s390x/Kconfig > index 5e7d8a2bae8b..373f38adcd6b 100644 > --- a/hw/s390x/Kconfig > +++ b/hw/s390x/Kconfig > @@ -10,3 +10,7 @@ config S390_CCW_VIRTIO > select SCLPCONSOLE > select VIRTIO_CCW > select MSI_NONBROKEN > + select PCI_EXPRESS > + select E1000E_PCI_EXPRESS > + select IGB_PCI_EXPRESS > + select USB_XHCI_PCI Please don't use "select" here - you still want these devices to be disabled in case you run configure with "--without-default-devices". You can use "imply" instead of "select" instead. Thomas
On 4/7/23 11:32, Cédric Le Goater wrote: > It is useful to extend the number of available PCI devices to KVM guests > for passthrough scenarios and also to expose these models to a different > (big endian) architecture. > > Signed-off-by: Cédric Le Goater <clg@redhat.com> > --- > hw/s390x/Kconfig | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/hw/s390x/Kconfig b/hw/s390x/Kconfig > index 5e7d8a2bae8b..373f38adcd6b 100644 > --- a/hw/s390x/Kconfig > +++ b/hw/s390x/Kconfig > @@ -10,3 +10,7 @@ config S390_CCW_VIRTIO > select SCLPCONSOLE > select VIRTIO_CCW > select MSI_NONBROKEN > + select PCI_EXPRESS Can zPCI plug legacy PCI devices? I'd expect not, only PCIe devices. Then this patch would become: -- >8 -- @@ -5,7 +5,7 @@ config S390_CCW_VIRTIO imply VFIO_AP imply VFIO_CCW imply WDT_DIAG288 - select PCI + select PCI_EXPRESS select S390_FLIC select SCLPCONSOLE select VIRTIO_CCW ---
diff --git a/hw/s390x/Kconfig b/hw/s390x/Kconfig index 5e7d8a2bae8b..373f38adcd6b 100644 --- a/hw/s390x/Kconfig +++ b/hw/s390x/Kconfig @@ -10,3 +10,7 @@ config S390_CCW_VIRTIO select SCLPCONSOLE select VIRTIO_CCW select MSI_NONBROKEN + select PCI_EXPRESS + select E1000E_PCI_EXPRESS + select IGB_PCI_EXPRESS + select USB_XHCI_PCI
It is useful to extend the number of available PCI devices to KVM guests for passthrough scenarios and also to expose these models to a different (big endian) architecture. Signed-off-by: Cédric Le Goater <clg@redhat.com> --- hw/s390x/Kconfig | 4 ++++ 1 file changed, 4 insertions(+)