Hi, Looking at Avi's comments, I came up with a slightly modified version of this patch, which avoids the #ifdef __ia64__ problem by introducing dma_flush_range(). I have made it a noop on non ia64, but it may need to be changed for PPC? Hollis would you check if you guys need this too? It also fixes the problem of trying to flush a zero sized block in cpu_physical_memory_unmap(). Xiantao, are you ok with this version? Cheers, Jes [...] -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html