Il 17/07/2013 21:28, Richard Henderson ha scritto: > On 07/17/2013 11:57 AM, Paolo Bonzini wrote: >> I'm still not sure what the bug is (so what the FIXME comment would >> be)... except of course that there may be bug in access_with_adjusted_size. > > The code here in exec.c is not using access_with_adjusted_size.
It is: cpu_outb -> address_space_write -> address_space_rw -> io_mem_write -> memory_region_dispatch_write -> access_with_adjusted_size memory_access_size is just returning a length that makes sense when passed to io_mem_write and ultimately to access_with_adjusted_size. Paolo > Unfortunately, access_with_adjusted_size only handles single copies, > one direction at a time. We're attempting a sort of "memcpy", which > calls for some amount of caching across the loop... > > > r~ >
