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pcie_sriov: Register VFs after migration

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pcie_sriov doesn't have code to restore its state after migration, but
igb, which uses pcie_sriov, naively claimed its migration capability.

Add code to register VFs after migration and fix igb migration.

Fixes: 3a977deebe ("Intrdocue igb device emulation")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-11-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Akihiko Odaki 2025-01-16 18:01:02 +09:00 • committed by Michael S. Tsirkin
parent 5e7dd17e43
commit f9efcd4711
3 changed files with 16 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

7
hw/pci/pci.c
View file

@ -803,10 +803,17 @@ static bool migrate_is_not_pcie(void *opaque, int version_id)
return !pci_is_express((PCIDevice *)opaque); return !pci_is_express((PCIDevice *)opaque);
} }
static int pci_post_load(void *opaque, int version_id)
{
pcie_sriov_pf_post_load(opaque);
return 0;
}
const VMStateDescription vmstate_pci_device = { const VMStateDescription vmstate_pci_device = {
.name = "PCIDevice", .name = "PCIDevice",
.version_id = 2, .version_id = 2,
.minimum_version_id = 1, .minimum_version_id = 1,
.post_load = pci_post_load,
.fields = (const VMStateField[]) { .fields = (const VMStateField[]) {
VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice), VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice),
VMSTATE_BUFFER_UNSAFE_INFO_TEST(config, PCIDevice, VMSTATE_BUFFER_UNSAFE_INFO_TEST(config, PCIDevice,

7
hw/pci/pcie_sriov.c
View file

@ -248,6 +248,13 @@ void pcie_sriov_config_write(PCIDevice *dev, uint32_t address,
} }
} }
void pcie_sriov_pf_post_load(PCIDevice *dev)
{
if (dev->exp.sriov_cap) {
register_vfs(dev);
}
}
/* Reset SR/IOV */ /* Reset SR/IOV */
void pcie_sriov_pf_reset(PCIDevice *dev) void pcie_sriov_pf_reset(PCIDevice *dev)

2
include/hw/pci/pcie_sriov.h
View file

@ -57,6 +57,8 @@ void pcie_sriov_pf_add_sup_pgsize(PCIDevice *dev, uint16_t opt_sup_pgsize);
void pcie_sriov_config_write(PCIDevice *dev, uint32_t address, void pcie_sriov_config_write(PCIDevice *dev, uint32_t address,
uint32_t val, int len); uint32_t val, int len);
void pcie_sriov_pf_post_load(PCIDevice *dev);
/* Reset SR/IOV */ /* Reset SR/IOV */
void pcie_sriov_pf_reset(PCIDevice *dev); void pcie_sriov_pf_reset(PCIDevice *dev);