Re: [PATCH v3 0/3] xen: Fix usage of devices behind a VMD bridge

From: Roger Pau Monné
Date: Thu Mar 20 2025 - 12:22:00 EST


Ping x2?

Thanks, Roger.

On Thu, Mar 06, 2025 at 09:48:07AM +0100, Roger Pau Monné wrote:
> Hello,
>
> I've attempted to ping Nirmal directly on the VMD patch, but got no
> reply so far.
>
> First version of this series was posted on 10/01, yet there hasn't
> been any feedback from Nirmal. Would it be possible to merge this
> without Nirmal Ack due to timeout?
>
> It's not even a new feature, just a bugfix that allows running with
> VMD devices when using Xen.
>
> Thanks, Roger.
>
> On Wed, Feb 19, 2025 at 10:20:54AM +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
> > PCI: vmd: Disable MSI remapping bypass under Xen
> > PCI/MSI: Convert pci_msi_ignore_mask to per MSI domain flag
> >
> > arch/x86/pci/xen.c | 8 ++------
> > drivers/pci/controller/vmd.c | 20 +++++++++++++++++++
> > drivers/pci/msi/msi.c | 37 ++++++++++++++++++++----------------
> > drivers/xen/pci.c | 32 +++++++++++++++++++++++++++++++
> > include/linux/msi.h | 3 ++-
> > kernel/irq/msi.c | 2 +-
> > 6 files changed, 78 insertions(+), 24 deletions(-)
> >
> > --
> > 2.46.0
> >