On Mon, Jul 24, 2023 at 05:32:54PM +0200, Igor Mammedov wrote: > On Wed, 12 Jul 2023 22:09:37 +0530 > Sunil V L <suni...@ventanamicro.com> wrote: > > > PCIe High MMIO base is actually dynamic and fixed at > > run time based on the RAM configured. Currently, this is > > not part of the memmap and kept in separate static variable > > in virt.c. However, ACPI code also needs this information > > to populate DSDT. So, once the base is discovered, merge > > this into the final memmap which can be used to create > > ACPI tables later. > > can ACPI code fetch virt_high_pcie_memmap at runtime from > host bridge (like we do in pc/q35)? > Hi Igor,
Looking at the current design of virt machines (arm/loongarch/riscv), getting this directly from the memmap looks simpler. ARM ACPI also uses the memmap to get the pcie_high space. It appears to me we need some more infrastructure code if ACPI needs to fetch from host bridge. I am not sure why that would be beneficial. Thanks, Sunil
