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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> |
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arch/x86 | ||
common | ||
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hw | ||
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public |