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| author | Leonardo Bras <leobras@redhat.com> | 2023-05-02 21:27:02 -0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-05-19 10:30:46 -0400 |
| commit | 5ed3dabe57dd9f4c007404345e5f5bf0e347317f (patch) | |
| tree | b627dc87c1f054b6fa3c3d02588aa8aa8d3e2871 /hw/pci | |
| parent | 6f8be29ec17d44496b9ed67599bceaaba72d1864 (diff) | |
| download | focaccia-qemu-5ed3dabe57dd9f4c007404345e5f5bf0e347317f.tar.gz focaccia-qemu-5ed3dabe57dd9f4c007404345e5f5bf0e347317f.zip | |
hw/pci: Disable PCI_ERR_UNCOR_MASK register for machine type < 8.0
Since it's implementation on v8.0.0-rc0, having the PCI_ERR_UNCOR_MASK
set for machine types < 8.0 will cause migration to fail if the target
QEMU version is < 8.0.0 :
qemu-system-x86_64: get_pci_config_device: Bad config data: i=0x10a read: 40 device: 0 cmask: ff wmask: 0 w1cmask:0
qemu-system-x86_64: Failed to load PCIDevice:config
qemu-system-x86_64: Failed to load e1000e:parent_obj
qemu-system-x86_64: error while loading state for instance 0x0 of device '0000:00:02.0/e1000e'
qemu-system-x86_64: load of migration failed: Invalid argument
The above test migrated a 7.2 machine type from QEMU master to QEMU 7.2.0,
with this cmdline:
./qemu-system-x86_64 -M pc-q35-7.2 [-incoming XXX]
In order to fix this, property x-pcie-err-unc-mask was introduced to
control when PCI_ERR_UNCOR_MASK is enabled. This property is enabled by
default, but is disabled if machine type <= 7.2.
Fixes: 010746ae1d ("hw/pci/aer: Implement PCI_ERR_UNCOR_MASK register")
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Leonardo Bras <leobras@redhat.com>
Message-Id: <20230503002701.854329-1-leobras@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1576
Tested-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/pci')
| -rw-r--r-- | hw/pci/pci.c | 2 | ||||
| -rw-r--r-- | hw/pci/pcie_aer.c | 11 |
2 files changed, 9 insertions, 4 deletions
diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 3a0107758c..1cc7c89036 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -79,6 +79,8 @@ static Property pci_props[] = { DEFINE_PROP_STRING("failover_pair_id", PCIDevice, failover_pair_id), DEFINE_PROP_UINT32("acpi-index", PCIDevice, acpi_index, 0), + DEFINE_PROP_BIT("x-pcie-err-unc-mask", PCIDevice, cap_present, + QEMU_PCIE_ERR_UNC_MASK_BITNR, true), DEFINE_PROP_END_OF_LIST() }; diff --git a/hw/pci/pcie_aer.c b/hw/pci/pcie_aer.c index 103667c368..374d593ead 100644 --- a/hw/pci/pcie_aer.c +++ b/hw/pci/pcie_aer.c @@ -112,10 +112,13 @@ int pcie_aer_init(PCIDevice *dev, uint8_t cap_ver, uint16_t offset, pci_set_long(dev->w1cmask + offset + PCI_ERR_UNCOR_STATUS, PCI_ERR_UNC_SUPPORTED); - pci_set_long(dev->config + offset + PCI_ERR_UNCOR_MASK, - PCI_ERR_UNC_MASK_DEFAULT); - pci_set_long(dev->wmask + offset + PCI_ERR_UNCOR_MASK, - PCI_ERR_UNC_SUPPORTED); + + if (dev->cap_present & QEMU_PCIE_ERR_UNC_MASK) { + pci_set_long(dev->config + offset + PCI_ERR_UNCOR_MASK, + PCI_ERR_UNC_MASK_DEFAULT); + pci_set_long(dev->wmask + offset + PCI_ERR_UNCOR_MASK, + PCI_ERR_UNC_SUPPORTED); + } pci_set_long(dev->config + offset + PCI_ERR_UNCOR_SEVER, PCI_ERR_UNC_SEVERITY_DEFAULT); |