it's a simplier way suggested by Michael S. Tsirkin to workaround virtio bug reported earlier: http://lists.nongnu.org/archive/html/qemu-devel/2015-08/msg00522.html where virtio can't handle buffer that crosses border between 2 DIMM's (i.e. 2 MemoryRegions).
idea is to leave gaps between DIMMs, making their GPAs non contiguous, which effectively forces kmalloc to not use DIMM if buffer doesn't fit inside of it. Igor Mammedov (2): memhp: extend address auto assignment to support gaps pc: memhp: force gaps between DIMM's GPA hw/i386/pc.c | 4 +++- hw/i386/pc_piix.c | 3 +++ hw/i386/pc_q35.c | 3 +++ hw/mem/pc-dimm.c | 13 +++++++------ hw/ppc/spapr.c | 2 +- include/hw/i386/pc.h | 2 ++ include/hw/mem/pc-dimm.h | 7 ++++--- 7 files changed, 23 insertions(+), 11 deletions(-) -- 1.8.3.1
