[Qemu-devel] [PATCH V3 0/7] execute code from mmio area

[fred . konrad]

From: KONRAD Frederic <address@hidden>

This series allows to execute code from mmio areas.
The main goal of this is to be able to run code for example from an SPI device.

The three first patch fixes the way get_page_addr_code fills the TLB.

The sixth patch implements the mmio execution helpers: the device must
implement the request_ptr callback of the MemoryRegion and will be notified
when the guest wants to execute code from it.

The fouth and fifth patch introduces mmio_interface device which allows to
dynamically map a host pointer somewhere into the memory.

The last patch implements the execution from the SPI memories in the
xilinx_spips model.

Thanks,
Fred

V2 -> V3:
  * Reorder patches to allow bisection.
  * Rebase on current master.
  * Use an async work to invalidate the mmio region.
  * Clear the dirty of the region before invalidating it.
V1 -> V2:
  * Fix the DPRINTF error.
RFC -> V1:
  * Use an interface (mmio-interface) to fix any reference leak issue.

KONRAD Frederic (7):
  cputlb: cleanup get_page_addr_code to use VICTIM_TLB_HIT
  cputlb: move get_page_addr_code
  cputlb: fix the way get_page_addr_code fills the tlb
  qdev: add MemoryRegion property
  introduce mmio_interface
  exec: allow to get a pointer for some mmio memory region
  xilinx_spips: allow mmio execution

 cputlb.c                         |  82 ++++++++++++++-----------
 hw/misc/Makefile.objs            |   1 +
 hw/misc/mmio_interface.c         | 128 +++++++++++++++++++++++++++++++++++++++
 hw/ssi/xilinx_spips.c            |  74 ++++++++++++++++------
 include/exec/memory.h            |  35 +++++++++++
 include/hw/misc/mmio_interface.h |  49 +++++++++++++++
 include/hw/qdev-properties.h     |   2 +
 memory.c                         | 111 +++++++++++++++++++++++++++++++++
 8 files changed, 428 insertions(+), 54 deletions(-)
 create mode 100644 hw/misc/mmio_interface.c
 create mode 100644 include/hw/misc/mmio_interface.h

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1.8.3.1