[Qemu-devel] [RFC PATCH 0/8] Steps towards per CPU address-spaces

[edgar.iglesias@gmail.com]

From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>

Hi,

I'm looking at modelling a system where multiple CPUs co-exist with
different views of their attached buses/devs.

With this RFC series I'm trying to take small steps towards having
an address-space per CPU. This is still incomplete but I would like
to get comments early before changing to much. As there are no users
in the tree yet, this code restructure should not result in any
functional changes.

Patch 6 shows an issue with circular header deps between
qemu-common.h, cpu.h. I've got a branch with a possible
solution to that but its very intrusive so I opted to keep that
for later.

Patch 8 shows a possible transform to ld*/st*_phys here only
implemented for ldl_*_phys.

Future work will have to transform more of the cpu_* bus accessing
functions.

Cheers,
Edgar

Edgar E. Iglesias (8):
  exec: Make tb_invalidate_phys_addr input an AS
  exec: Make iotlb_to_region input an AS
  exec: Always initialize MemorySection address spaces
  exec: Make memory_region_section_get_iotlb use section AS
  memory: Add MemoryListener to typedefs
  cpu: Add per-cpu address space
  exec: On AS changes, only flush affected CPU TLBs
  exec: Make ldl_*_phys input an AddressSpace

 cpu-exec.c                        |    5 +-
 cputlb.c                          |    4 +-
 exec.c                            |   64 +++++++++++++++--------
 hw/dma/pl080.c                    |    9 ++--
 hw/dma/sun4m_iommu.c              |    3 +-
 hw/net/vmware_utils.h             |    2 +-
 hw/ppc/spapr_hcall.c              |    8 +--
 hw/s390x/css.c                    |    3 +-
 hw/s390x/s390-virtio-bus.c        |    2 +-
 hw/s390x/virtio-ccw.c             |    5 +-
 hw/scsi/megasas.c                 |    4 +-
 hw/scsi/vmw_pvscsi.c              |    3 +-
 hw/virtio/virtio.c                |    3 +-
 include/exec/cpu-common.h         |    6 +--
 include/exec/cpu-defs.h           |    3 ++
 include/exec/exec-all.h           |    5 +-
 include/exec/softmmu_template.h   |    5 +-
 include/hw/ppc/spapr.h            |    2 +-
 include/qemu/typedefs.h           |    1 +
 include/qom/cpu.h                 |    2 +
 target-alpha/helper.h             |    2 +-
 target-alpha/mem_helper.c         |    8 +--
 target-alpha/translate.c          |    2 +-
 target-arm/helper.c               |   12 ++---
 target-i386/arch_memory_mapping.c |   36 ++++++-------
 target-i386/helper.c              |    8 +--
 target-i386/seg_helper.c          |    4 +-
 target-i386/smm_helper.c          |  102 +++++++++++++++++++------------------
 target-i386/svm_helper.c          |   26 +++++-----
 target-ppc/excp_helper.c          |    2 +-
 target-ppc/mmu-hash32.h           |    4 +-
 target-s390x/cpu.c                |    2 +-
 target-sparc/ldst_helper.c        |    6 +--
 target-sparc/mmu_helper.c         |   18 +++----
 target-unicore32/softmmu.c        |    4 +-
 target-xtensa/helper.c            |    2 +-
 target-xtensa/op_helper.c         |    3 +-
 translate-all.c                   |    4 +-
 38 files changed, 215 insertions(+), 169 deletions(-)

-- 
1.7.10.4