On 2016/1/20 16:39, Andrew Cooper wrote: > On 20/01/2016 06:33, Shannon Zhao wrote: >> > >> > On 2016/1/18 20:52, Andrew Cooper wrote: >>> >> On 18/01/16 12:46, Stefano Stabellini wrote: >>>>> >>>> On Mon, 18 Jan 2016, Andrew Cooper wrote: >>>>>>> >>>>>> On 18/01/16 12:38, Stefano Stabellini wrote: >>>>>>>>> >>>>>>>> On Fri, 15 Jan 2016, Shannon Zhao wrote: >>>>>>>>>>> >>>>>>>>>> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> Add a new delivery type: >>>>>>>>>>> >>>>>>>>>> val[63:56] == 3: val[15:8] is flag: val[7:0] is a PPI. >>>>>>>>>>> >>>>>>>>>> To the flag, bit 0 stands the interrupt mode is edge(1) or level(0) and >>>>>>>>>>> >>>>>>>>>> bit 1 stands the interrupt polarity is active low(1) or high(0). >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx> >>>>>>>>>>> >>>>>>>>>> --- >>>>>>>>>>> >>>>>>>>>> include/xen/interface/hvm/params.h | 5 +++++ >>>>>>>>>>> >>>>>>>>>> 1 file changed, 5 insertions(+) >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> diff --git a/include/xen/interface/hvm/params.h b/include/xen/interface/hvm/params.h >>>>>>>>>>> >>>>>>>>>> index a6c7991..550688a 100644 >>>>>>>>>>> >>>>>>>>>> --- a/include/xen/interface/hvm/params.h >>>>>>>>>>> >>>>>>>>>> +++ b/include/xen/interface/hvm/params.h >>>>>>>>>>> >>>>>>>>>> @@ -34,6 +34,11 @@ >>>>>>>>>>> >>>>>>>>>> * Domain = val[47:32], Bus = val[31:16], >>>>>>>>>>> >>>>>>>>>> * DevFn = val[15: 8], IntX = val[ 1: 0] >>>>>>>>>>> >>>>>>>>>> * val[63:56] == 2: val[7:0] is a vector number. >>>>>>>>>>> >>>>>>>>>> + * val[63:56] == 3: val[15:8] is flag of event-channel interrupt: >>>>>>>>>>> >>>>>>>>>> + * bit 0: interrupt is edge(1) or level(0) triggered >>>>>>>>>>> >>>>>>>>>> + * bit 1: interrupt is active low(1) or high(0) >>>>>>>>>>> >>>>>>>>>> + * val[7:0] is PPI number used by event-channel. >>>>>>>>>>> >>>>>>>>>> + * This is only used by ARM/ARM64. >>>>>>>>>>> >>>>>>>>>> * If val == 0 then CPU0 event-channel notifications are not delivered. >>>>>>>>>>> >>>>>>>>>> */ >>>>>>>>>>> >>>>>>>>>> #define HVM_PARAM_CALLBACK_IRQ 0 >>>>>>>>> >>>>>>>> Andrew, I think that this patch is correct. Looking back at your >>>>>>>>> >>>>>>>> previous comment (http://marc.info/?l=devicetree&m=144804014214262&w=2), >>>>>>>>> >>>>>>>> is it possible that you were confused by enum callback_via_type, which >>>>>>>>> >>>>>>>> is internal to Xen and offset'ed by 1 compared to the described values >>>>>>>>> >>>>>>>> in xen/include/public/hvm/params.h? >>>>>>>>> >>>>>>>> >>>>>>>>> >>>>>>>> If not, and indeed somebody introduced one more field but failed to >>>>>>>>> >>>>>>>> document it, then I suggest she sends a patch to fix the issue as soon >>>>>>>>> >>>>>>>> as possible. >>>>>>> >>>>>> I was indeed confused - the ABI is utterly mad. >>>>> >>>> All right. In that case, Shannon, you can add my >>>>> >>>> >>>>> >>>> Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> >>>>> >>>> >>>>> >>>> >>>>>>> >>>>>> However, this change does need rebasing over c/s ca5c54b, which was the >>>>>>> >>>>>> result of the original discussion. >>>>> >>>> c/s ca5c54b is for Xen, while this is a Linux patch (Linux has its own >>>>> >>>> set of Xen headers). >>> >> All ABI changes need to happen in the Xen public headers first. This >>> >> patch cannot be accepted yet. >> > So you mean it should port c/s ca5c54b to Linux first? Then add this >> > change based on that? > FIrst, you must get this content and submit a patch against Xen. The > Xen repository is the authoritative version of the ABI. > I've sent a patch to Xen, but not applied yet. > Once that patch is accepted, you will need to port ca5c54b and the new > patch as part of this series. Ok, thanks. -- Shannon -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
