On 03/25/2010 11:44 AM, Michael S. Tsirkin wrote: > On Thu, Mar 25, 2010 at 11:40:09AM +0200, Avi Kivity wrote: > >> On 03/25/2010 11:15 AM, Michael S. Tsirkin wrote: >> >>> - Why are you using 32 bit long memory accesses for interrupts? >>> 16 bit IO eould be enough and it's faster. This what virtio-pci does. >>> >>> >>> >> Why is 16 bit io faster? >> > Something to do with need for emulation to get address/data > for pci memory accesses? > pio is definitely faster than mmio (all that is needed is to set one bit on the BAR). But 32 vs. 16 makes no difference. -- error compiling committee.c: too many arguments to function _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
