diff options
| author | Shradha Gupta <shradhagupta@linux.microsoft.com> | 2025-06-11 07:10:15 -0700 |
|---|---|---|
| committer | Shradha Gupta <shradhagupta@linux.microsoft.com> | 2025-06-17 06:15:14 +0000 |
| commit | ad518f2557b971976fc9d99a6a8cd2b453742bf9 (patch) | |
| tree | 75f76b3b94db969ddb519e194cb618321bfcb561 | |
| parent | 5da8a8b8090b5f79a816ba016af3a70a9d7287bf (diff) | |
PCI: hv: Allow dynamic MSI-X vector allocation
Allow dynamic MSI-X vector allocation for pci_hyperv PCI controller
by adding support for the flag MSI_FLAG_PCI_MSIX_ALLOC_DYN and using
pci_msix_prepare_desc() to prepare the MSI-X descriptors.
Feature support added for both x86 and ARM64
Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/pci/controller/pci-hyperv.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index ef5d655a0052..86ca041bf74a 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -2119,6 +2119,7 @@ static struct irq_chip hv_msi_irq_chip = { static struct msi_domain_ops hv_msi_ops = { .msi_prepare = hv_msi_prepare, .msi_free = hv_msi_free, + .prepare_desc = pci_msix_prepare_desc, }; /** @@ -2140,7 +2141,7 @@ static int hv_pcie_init_irq_domain(struct hv_pcibus_device *hbus) hbus->msi_info.ops = &hv_msi_ops; hbus->msi_info.flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS | MSI_FLAG_MULTI_PCI_MSI | - MSI_FLAG_PCI_MSIX); + MSI_FLAG_PCI_MSIX | MSI_FLAG_PCI_MSIX_ALLOC_DYN); hbus->msi_info.handler = FLOW_HANDLER; hbus->msi_info.handler_name = FLOW_NAME; hbus->msi_info.data = hbus; |