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Re: [PATCH 13/13] s390x/pci: get zPCI function info from host


From: Cornelia Huck
Subject: Re: [PATCH 13/13] s390x/pci: get zPCI function info from host
Date: Mon, 26 Oct 2020 17:38:21 +0100

On Mon, 26 Oct 2020 11:34:41 -0400
Matthew Rosato <mjrosato@linux.ibm.com> wrote:

> We use the capability chains of the VFIO_DEVICE_GET_INFO ioctl to retrieve
> the CLP information that the kernel exports.
> 
> To be compatible with previous kernel versions we fall back on previous
> predefined values, same as the emulation values, when the ioctl is found
> to not support capability chains. If individual CLP capabilities are not
> found, we fall back on default values for only those capabilities missing
> from the chain.
> 
> This patch is based on work previously done by Pierre Morel.
> 
> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
> ---
>  hw/s390x/s390-pci-bus.c          |   9 +-
>  hw/s390x/s390-pci-vfio.c         | 180 
> +++++++++++++++++++++++++++++++++++++++
>  hw/s390x/trace-events            |   6 ++
>  include/hw/s390x/s390-pci-bus.h  |   1 +
>  include/hw/s390x/s390-pci-clp.h  |  12 ++-
>  include/hw/s390x/s390-pci-vfio.h |   1 +
>  6 files changed, 202 insertions(+), 7 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>




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