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  /src/sys/dev/hyperv/
hypervreg.h 237 * If br_windex == br_rindex, this bufring is empty; this
239 * write is going to make br_windex same as br_rindex.
241 volatile uint32_t br_windex; member in struct:vmbus_bufring
vmbus.c 1675 /* XXX bus_dmamap_sync(POSTREAD) on br_rindex/br_windex */
1677 uint32_t widx = rd->rd_ring->br_windex;
1678 /* XXX bus_dmamap_sync(PREREAD) on br_rindex/br_windex */
1696 /* XXX bus_dmamap_sync(POSTREAD) on br_rindex/br_windex */
1697 return rd->rd_ring->br_rindex == rd->rd_ring->br_windex;
1698 /* XXX bus_dmamap_sync(PREREAD) on br_rindex/br_windex */
1732 membar_sync(); /* XXX bus_dmamap_sync(POSTWRITE) on br_windex */
1733 wrd->rd_ring->br_windex = wrd->rd_prod;
1734 /* XXX bus_dmamap_sync(PREWRITE) on br_windex */

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