On 20 November 2014 21:13, Laszlo Ersek <lersek@xxxxxxxxxx> wrote: > On 11/20/14 21:10, Peter Maydell wrote: >> I think in practice for a well-behaved guest we can arrange >> that everything is fine (roughly, the guest has to treat >> DMA-capable devices as doing coherent-dma, which we can tell >> them to do via DT bindings or ACPI[*], plus the special >> case handling we already have for bootup), and naughty guests >> will only confuse themselves. But I need to think a bit more >> about it (and we should probably write down how it works >> somewhere :-)). > This basically means that virtio transfers should just use normal memory > in the guest (treating virtio transfers as "coherent DMA"), right? Normal *cacheable*, but yes. -- PMM -- 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
