Re: [PATCH v2 0/3] xen: fix usage of devices behind a VMD bridge

[Roger Pau Monné]

Ping? This has been pending for 3 weeks without replies.

Thanks, Roger.

On Tue, Jan 14, 2025 at 11:33:10AM +0100, Roger Pau Monne wrote:
> Hello,
> 
> The following series should fix the usage of devices behind a VMD bridge
> when running Linux as a Xen PV hardware domain (dom0).  I've only been
> able to test PV. I think PVH should also work but I don't have hardware
> capable of testing it right now.
> 
> I don't expect the first two patches to be problematic, the last patch
> is likely to be more controversial.  I've tested it internally and
> didn't see any issues, but my testing of PV mode is mostly limited to
> dom0.
> 
> Thanks, Roger.
> 
> Roger Pau Monne (3):
>   xen/pci: do not register devices with segments >= 0x10000
>   vmd: disable MSI remapping bypass under Xen
>   pci/msi: remove pci_msi_ignore_mask
> 
>  arch/x86/pci/xen.c           |  8 ++------
>  drivers/pci/controller/vmd.c | 19 ++++++++++++++++++
>  drivers/pci/msi/msi.c        | 37 ++++++++++++++++++++----------------
>  drivers/xen/pci.c            | 19 ++++++++++++++++++
>  include/linux/msi.h          |  3 ++-
>  kernel/irq/msi.c             |  2 +-
>  6 files changed, 64 insertions(+), 24 deletions(-)
> 
> -- 
> 2.46.0
>