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1c0e5701c5
The virtio framework uses wmb() when updating avail->idx. It
guarantees the write order, but not necessarily loading order
for the code accessing the memory. This commit adds a load barrier
after reading the avail->idx to make sure all the data in the
descriptor is visible. It also adds a barrier when returning the
packet to virtio framework to make sure read/writes are visible to
the virtio code.
Fixes:
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|---|---|---|
| .. | ||
| chrome | ||
| goldfish | ||
| mellanox | ||
| mips | ||
| olpc | ||
| surface | ||
| x86 | ||
| Kconfig | ||
| Makefile | ||