On Thu, 2 Jan 2025 13:50:11 -0500 Yunxiang Li <Yunxiang.Li@xxxxxxx> wrote: > On some servers the upstream bridge does not have enough address window > for the ROM bar, currently this will result in the vdev not having a ROM > bar and this causes issues if ROM content is needed by the guest driver. > > On x86 the device's ROM may be passed via setup data to pdev->rom, so it > can be used as a fallback. However, it can't be exposed transparently as > a PCI resource like the shadow ROM, because it is not aligned to power > of two boundaries. So special handling need to be added in vfio to make > use of this data just like in the GPU drivers. > > Yunxiang Li (2): > vfio/pci: Remove shadow ROM specific code paths > vfio/pci: Expose setup ROM at ROM bar when needed > > drivers/vfio/pci/vfio_pci_config.c | 8 +++--- > drivers/vfio/pci/vfio_pci_core.c | 40 ++++++++++++++---------------- > drivers/vfio/pci/vfio_pci_rdwr.c | 25 ++++++++++++------- > 3 files changed, 38 insertions(+), 35 deletions(-) > Applied to vfio next branch for v6.14. Thanks, Alex
