On 09/26/2011 03:54 PM, Lluís Vilanova wrote:
It is the second bar that generates the problems with KVM:s->data_ptr = g_malloc(s->size); memory_region_init_ram_ptr(&s->data,&s->dev.qdev, "backdoor.data", s->size, s->data_ptr); pci_register_bar(&s->dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY,&s->data);
s->data_ptr is not properly aligned. Use memory_region_init_ram().
> I only had a few minutes and couldn't test reading from BAR0, but you > might want to get 32-bit reads working first before trying 64-bit. The next problem is using 64bit reads and writes... if I set min_access_size and max_access_size to 4, I get the calls to 'control_io_read', but not with 8...
8-byte accesses are not yet supported. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
