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| author | Sebastian Ott <sebott@redhat.com> | 2024-12-03 13:19:28 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-01-15 13:05:33 -0500 |
| commit | 694632fd44987cc4618612a38ad151047524a590 (patch) | |
| tree | 5110eb4a1cffbb758012392d637708b8fc5669e2 /scripts/vmstate-static-checker.py | |
| parent | 1e77a4a32f8b7b6699a2f8b1f98e8fada902ba1f (diff) | |
| download | qemu-694632fd44987cc4618612a38ad151047524a590.zip qemu-694632fd44987cc4618612a38ad151047524a590.tar.gz qemu-694632fd44987cc4618612a38ad151047524a590.tar.bz2 | |
pci: ensure valid link status bits for downstream ports
PCI hotplug for downstream endpoints on arm fails because Linux'
PCIe hotplug driver doesn't like the QEMU provided LNKSTA:
pcieport 0000:08:01.0: pciehp: Slot(2): Card present
pcieport 0000:08:01.0: pciehp: Slot(2): Link Up
pcieport 0000:08:01.0: pciehp: Slot(2): Cannot train link: status 0x2000
There's 2 cases where LNKSTA isn't setup properly:
* the downstream device has no express capability
* max link width of the bridge is 0
Move the sanity checks added via 88c869198aa63
("pci: Sanity test minimum downstream LNKSTA") outside of the
branch to make sure downstream ports always have a valid LNKSTA.
Signed-off-by: Sebastian Ott <sebott@redhat.com>
Tested-by: Zhenyu Zhang <zhenyzha@redhat.com>
Message-Id: <20241203121928.14861-1-sebott@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'scripts/vmstate-static-checker.py')
0 files changed, 0 insertions, 0 deletions