On 14.02.2025 04:32, Chen, Jiqian wrote: > On 2025/2/11 17:21, Roger Pau Monné wrote: >> On Tue, Feb 11, 2025 at 10:22:57AM +0800, Jiqian Chen wrote: >>> Some devices, like AMDGPU, support resizable bar capability, >>> but vpci of Xen doesn't support this feature, so they fail >>> to resize bars and then cause probing failure. >>> >>> According to PCIe spec, each bar that supports resizing has >>> two registers, PCI_REBAR_CAP and PCI_REBAR_CTRL. So, add >>> handlers to support resizing the size of BARs. >>> >>> Note that Xen will only trap PCI_REBAR_CTRL, as PCI_REBAR_CAP >>> is read-only register and the hardware domain already gets >>> access to it without needing any setup. >>> >>> Signed-off-by: Jiqian Chen <jiqian.c...@amd.com> >> >> Reviewed-by: Roger Pau Monné <roger....@citrix.com> > Thank you! > May I know whether this can be merged in Xen version 4.20?
That's a question Oleksii would have to answer. My take is that it's (far) too late in the cycle for a feature addition. Jan
