From: Akihiko Odaki <akihiko.odaki@daynix.com>
Date: Mon, 15 Jul 2024 05:19:09 +0000 (+0900)
Subject: pcie_sriov: Ensure PF and VF are mutually exclusive
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=78f9d7fd1989311040beff54979bcb2a1ba0aff2;p=qemu.git

pcie_sriov: Ensure PF and VF are mutually exclusive

A device cannot be a SR-IOV PF and a VF at the same time.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20240715-sriov-v5-3-3f5539093ffc@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c
index 56523ab4e8..6c79658b4c 100644
--- a/hw/pci/pcie_sriov.c
+++ b/hw/pci/pcie_sriov.c
@@ -42,6 +42,11 @@ bool pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
     uint8_t *cfg = dev->config + offset;
     uint8_t *wmask;
 
+    if (pci_is_vf(dev)) {
+        error_setg(errp, "a device cannot be both an SR-IOV PF and a VF");
+        return false;
+    }
+
     if (total_vfs) {
         uint16_t ari_cap = pcie_find_capability(dev, PCI_EXT_CAP_ID_ARI);
         uint16_t first_vf_devfn = dev->devfn + vf_offset;