>>> Julien Grall <julien.gr...@linaro.org> 12/01/17 5:14 PM >>> >On 30/11/17 14:28, Jan Beulich wrote: >>>>> On 28.11.17 at 15:05, <paul.durr...@citrix.com> wrote: >>> A call to handle_hvm_io_completion() is needed for completing I/O >>> that requires external emulation. Such completion should be requested when >>> hvm_vcpu_io_need_completion() returns true after hvm_emulate_once() has >>> completed. This is indicative of the underlying I/O emulation having >>> returned X86EMUL_RETRY and hence a re-emulation of the instruction is >>> needed to pick up the result of the I/O. >>> >>> A call to handle_hvm_io_completion() is NOT needed when the underlying >>> I/O has not returned X86EMUL_RETRY since there will be no result to pick >>> up. Hence it bogus to request such completion when mmio_retry is set, >>> since this can only happen if the underlying I/O emulation has returned >>> X86EMUL_OKAY (meaning the I/O has completed successfully). >>> >>> Reported-by: Andrew Cooper <andrew.coop...@citrix.com> >>> Signed-off-by: Paul Durrant <paul.durr...@citrix.com> >>> Reviewed-by: Jan Beulich <jbeul...@suse.com> >> >> Hmm, I notice Paul didn't Cc you on this one - despite it getting late, >> this is still something to be considered for 4.10. It's certainly going >> to be a backporting candidate. > >Release-acked-by: Julien Grall <julien.gr...@linaro.org>
Thanks. >Could this be committed today? Not by me; I'm not in the office anymore. Perhaps Andrew could, together with the other (his) one you've sent an ack for. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
