[PATCH 00/15] accel/tcg: Fix for #360 and other i/o alignment issues

[Richard Henderson]

Short story is that the first two patches resolve the observed
problem, by completely bypassing quite a lot of code in memory.c.

Longer story is that we should either use that code in memory.c,
or we should bypass it to an even lower level, so that we don't
have multiple locations doing the partial-read assembly thing.

Patch 13 exposes a number of obvious device bugs via make check.
I'm sure there are more in devices that are less well tested.

Patch 15 has an obvious drawback: it breaks the original #360.
But it starts the conversation as to whether the check in memory.c
is in fact broken.


r~


Mark Cave-Ayland (2):
  NOTFORMERGE q800: test case for do_unaligned_access issue
  accel/tcg: Use byte ops for unaligned loads

Philippe Mathieu-Daudé (1):
  accel/tcg: Extract load_helper_unaligned from load_helper

Richard Henderson (12):
  accel/tcg: Don't test for watchpoints for code read
  accel/tcg: Handle page span access before i/o access
  softmmu/memory: Inline memory_region_dispatch_read1
  softmmu/memory: Simplify access_with_adjusted_size interface
  hw/net/e1000e: Fix size of io operations
  hw/net/e1000e: Fix impl.min_access_size
  hw/pci-host/q35: Improve blackhole_ops
  hw/scsi/megasas: Fix megasas_mmio_ops sizes
  hw/scsi/megasas: Improve megasas_queue_ops min_access_size
  softmmu/memory: Disallow short writes
  softmmu/memory: Support some unaligned access
  RFC accel/tcg: Defer some unaligned accesses to memory subsystem

 accel/tcg/cputlb.c | 147 +++++++++++++----------------
 hw/m68k/q800.c     | 131 ++------------------------
 hw/net/e1000e.c    |   8 +-
 hw/pci-host/q35.c  |   9 +-
 hw/scsi/megasas.c  |   6 +-
 softmmu/memory.c   | 226 +++++++++++++++++++++++++++++++++------------
 6 files changed, 251 insertions(+), 276 deletions(-)

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2.25.1