On Tue, Jun 05, 2012 at 07:07:39PM +0300, Avi Kivity wrote: > > + > > + count = (PAGE_SIZE - offset_in_page(linear_addr))/size; > > + > > + if (count == 0) /* 'in' crosses page boundry */ > > + return EMULATE_FAIL; > > + > > + count = min(count, rcx); > > + > > + r = __kvm_fast_string_pio_in(vcpu, size, port, linear_addr, count); > > + > > + if (r != EMULATE_DO_MMIO) > > + return r; > > + > > + vcpu->arch.fast_string_pio_ctxt.linear_addr = linear_addr; > > + vcpu->arch.complete_userspace_io = complete_fast_string_pio; > > + return EMULATE_DO_MMIO; > > +} > > +EXPORT_SYMBOL_GPL(kvm_fast_string_pio_in); > > Perhaps a better way to do it is to move the code into the emulator, > which already handles all the checks and masks, and just avoid > x86_decode_insn()/x86_emulate_insn(). > I do not see how it would be better. Emulator works on different data structures that should be prepared and the only functions that we can reuse (as far as I see) are register_address_increment() and ad_mask() anyway. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
