Files
acrn-hypervisor/hypervisor/include/arch/x86
Li, Fei1 5930e96d12 hv: io_req: refine vhm_req status setting
In spite of vhm_req status could be updated in HV and DM on different CPUs, they
only change vhm_req status when they detect vhm_req status has been updated by
each other. So vhm_req status will not been misconfigured. However, before HV
sets vhm_req status to REQ_STATE_PENDING, vhm_req buffer filling should be visible
to DM. Add a write memory barrier to guarantee this.

Tracked-On: #1842
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
2019-07-11 09:15:47 +08:00
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