On Tue, Oct 29, 2013 at 01:57:33PM +0100, Igor Mammedov wrote: > * simplify PCI address space mapping into system address space, > replacing code duplication in piix/q53 PCs with a helper function > > * add fw_cfg 'etc/pcimem64-minimum-address' to allow QEMU reserve > additional address space before 64-bit PCI hole. Which will be > need for reserving memory hotplug region in highmem. > SeaBIOS counterpart: http://patchwork.ozlabs.org/patch/283623/
I'd like to see if we can figure out the migration issue with memory layout. Because if we do, and get rid of the separate 64 bit region as a concept, exposing the start of this non-existent region in FW CFG will make very little sense IMHO. > v2: > * use negative priority to map PCI address space under RAM memory > regions which allows simplify code by removing pci_hole & > pci_hole64 memory region aliases > > Series depends on: > "memory: Change MemoryRegion priorities from unsigned to signed: > > Git tree for testing: > https://github.com/imammedo/qemu/commits/pcimem64-minimum-address-v2 > > Igor Mammedov (1): > pc: add 'etc/pcimem64-minimum-address' fw_cfg interface to SeaBIOS > > Michael S. Tsirkin (1): > pc: map PCI address space as catchall region for not mapped addresses > > hw/i386/pc.c | 28 ++++++++++++++++------------ > hw/i386/pc_piix.c | 2 -- > hw/pci-host/piix.c | 27 +++++---------------------- > hw/pci-host/q35.c | 28 ++++++---------------------- > include/hw/i386/pc.h | 15 +++------------ > include/hw/pci-host/q35.h | 2 -- > 6 files changed, 30 insertions(+), 72 deletions(-)
