On Fri, May 08, 2026 at 01:37:09PM -0500, Tushar Dave wrote: > This RFC introduces a mechanism to specify Guest Physical Addresses > (GPAs) for PCI BARs, allowing explicit placement of guest MMIO BAR > addresses to match host physical addresses for assigned devices. > > On some platforms, P2P DMA is performed between devices within the same > IOMMU group. The PCI fabric ACS is configured to permit direct P2P > without going through the host bridge in order to achieve the required > performance.
Pass this info to guest firmware, let it set bars any way it wants?
