On Tue, Jul 08, 2025 at 10:48:48AM +0530, Naman Jain wrote: > Plug the default MSI-X prepare descriptor for non-implemented ops by > default to workaround the inability of Hyper-V vPCI module to setup > the MSI-X descriptors properly; especially for dynamically allocated > MSI-X. > > Signed-off-by: Naman Jain <[email protected]> > --- > drivers/pci/msi/irqdomain.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/pci/msi/irqdomain.c b/drivers/pci/msi/irqdomain.c > index 765312c92d9b..655e99b9c8cc 100644 > --- a/drivers/pci/msi/irqdomain.c > +++ b/drivers/pci/msi/irqdomain.c > @@ -84,6 +84,8 @@ static void pci_msi_domain_update_dom_ops(struct > msi_domain_info *info) > } else { > if (ops->set_desc == NULL) > ops->set_desc = pci_msi_domain_set_desc; > + if (ops->prepare_desc == NULL) > + ops->prepare_desc = pci_msix_prepare_desc; > } > } > > > base-commit: 26ffb3d6f02cd0935fb9fa3db897767beee1cb2a > -- > 2.34.1 >
Hey Naman, can you please try your tests with this patch: https://lore.kernel.org/all/1749651015-9668-1-git-send-email-shradhagu...@linux.microsoft.com/ I think this should help your use case Regards, Shradha.
