Junjie Mao b21b172347 HV: io: refactoring vmexit handler on EPT violation ...

This is the counterpart to the PIO emulation side.

1. ept_violation_vmexit_handler (entry point for handling vmexit on EPT instruction):

    Extract mmio address, size, direction and value (for write only), fill in an
    I/O request, invoke do_io to handle that and emulate_pio_post for
    post-processing.

2. emulate_io

    Handle the given I/O request, either completed by registered MMIO handlers
    or sent to VHM.

3. emulate_mmio_post:

    Update guest registers after the emulation is done.

v2 -> v3:

    * Rename: emulate_mmio_by_handler -> hv_emulate_mmio.
    * Inline the original hv_emulate_mmio.
    * No longer check alignment. The handlers are responsible for handling
      unaligned accesses.

v1 -> v2:

    * Rename: do_io -> emulate_io.

Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

2018-07-31 10:22:03 +08:00

..

x86

HV: io: refactoring vmexit handler on EPT violation

2018-07-31 10:22:03 +08:00