On Wed, 2014-10-01 at 10:20 +0100, Stefano Stabellini wrote: > I wonder if we could send both ioreqs at once from Xen and back from > QEMU. Or maybe append the registers to IOREQ_TYPE_VMWARE_PORT, changing > the size of ioreq_t only for this ioreq type.
Random idea: Why new add a IOREQ_TYPE_FULL_STATE which would be issued for these ports and let qemu decode the fact that it is vmware internally? That might be a more generically useful interface in the future? WRT to fitting all the register state in the current sized request, you could declare that this new thing takes multiple slots. Also, I may be wrong, but I thought most IOREQs were synchronous so only one slot was ever used? The buffered ioreq stuff has a separate ring (or uses a different part of the page, or something). I might be talking nonsense here though ;-) Ian.
