On 2025-04-04 04:07, Jan Beulich wrote:
On 04.04.2025 03:01, Stefano Stabellini wrote:
On one Sapphire AMD x86 board, I see this:
(XEN) [0000003943ca6ff2] [00000000f0000000, 00000000f7ffffff] (reserved)
(XEN) [00000039460886d9] [00000000fd000000, 00000000ffffffff] (reserved)
[...]
(XEN) [ 4.612235] 0000:02:00.0: not mapping BAR [fea00, fea03] invalid
position
I, too, see something like this on an SPR system. That's a firmware issue,
which hence first of all should be dealt with at the firmware side.
Linux boots fine on this platform but Linux as Dom0 on Xen does not.
This is because the pci_check_bar->is_memory_hole check fails due to the
MMIO region overlapping with the EFI reserved region.
And then what's the actual, observable problem? On my system I haven't
noticed anything going wrong yet, albeit the affected device is also left
without a driver.
The nvme drive (0000:02:00.0 with the invalid position above) fails to
work and no root drive is available.
Also aiui you strictly mean PVH Dom0 here?
I think we only looked at PVH Dom0.
Regards,
Jason
