On Fri, Nov 16, 2012 at 8:48 AM, Christian Borntraeger
<borntrae...@de.ibm.com> wrote:
> On 15/11/12 16:19, Stefan Hajnoczi wrote:
>
>> +#include "trace.h"
>> +#include "hw/dataplane/vring.h"
>> +
>> +/* Map target physical address to host address
>> + */
>> +static inline void *phys_to_host(Vring *vring, hwaddr phys)
>> +{
>> + /* Adjust for 3.6-4 GB PCI memory range */
>> + if (phys >= 0x100000000) {
>> + phys -= 0x100000000 - 0xe0000000;
>> + } else if (phys >= 0xe0000000) {
>> + fprintf(stderr, "phys_to_host bad physical address in "
>> + "PCI range %#lx\n", phys);
>> + exit(1);
>> + }
>
> I think non-pci virtio also wants to use dataplane. Any chance to move such
> pci
> specific things out of the main code?
Yes, using MemoryListener take care of this. Actually enabling
virtio-blk-mmio or virtio-blk-ccw should work as long as those
transports provide ioeventfd, irqfd, and use the vring memory layout.
Stefan
