[Qemu-devel] [PATCH 0/2] AHCI: avoid mapping stale guest memory

[John Snow]

Currently, the AHCI device tries to re-map guest memory every time
the low or high address registers are written to, whether or not the
AHCI device is currently active. If the other register has stale
information in it, this may lead to runtime failures.

Reconfigure the AHCI device to ignore writes to these registers while
the device is active, and otherwise postpone the dma memory map until
the device becomes active.

John Snow (2):
  AHCI: Do not (re)map FB/CLB buffers while not running
  AHCI: Protect cmd register

 hw/ide/ahci.c | 61 ++++++++++++++++++++++++++++++++++++++++++++---------------
 hw/ide/ahci.h |  2 ++
 2 files changed, 48 insertions(+), 15 deletions(-)

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1.9.3