Hi, I notice the following issue in the specification update (v31420) of the au1550: "System bus masters (USB host, PCI, MAC0, MAC1, DDMA) may receive stale data. Description ----------- System bus masters (USB host controller, PCI controller, MAC0, MAC1, DDMA controller), when performing coherent reads, may incorrectly receive stale data from memory instead of valid modified data from the Au1 data cache. If the request for data arrives within a 3-clock window prior to the cache line castout to memory, the cache snoop response is incorrect and stale data is retrieved from memory instead of the correct data from the cache. The cache line castout then completes, and memory is updated. Cache/memory data is not corrupted, but the specific bus read in not valid. Affected Step ------------- AA Workaround ---------- Do not enable cacheable master reads if the core modifies data in cache. Status ------ Not Fixed" Does somebody known if the linux kernel 2.6.10 integrates this workaround ? Thanks
