On Tue, Nov 10, 2015 at 11:49 AM, Jerry Hoemann <jerry.hoemann@xxxxxxx> wrote: > On Tue, Nov 10, 2015 at 12:51:59PM -0500, Jeff Moyer wrote: >> Jerry Hoemann <jerry.hoemann@xxxxxxx> writes: >> >> > Add IOCTL type 'P' to denote NVDIMM_TYPE_PASSTHRU. >> >> Can't you just make passthrough a separate command? If you actually add > > There are multiple conflicting NVDIMM _DSM running around, they > are "device specific". So, we should plan in general and not just > for the example DSM that Intel added support for. These DSM have > over lapping and incompatible function ids. > > The Intel example is an example, not standard. They are free to > change it at will. So, we can't be certain there won't be a > conflict some time in the future if we try to use their number space. > > I'm trying to create a generic pass thru that any vendors can use. Putting > this in the Intel function number space doesn't make a lot of sense to me. It isn't the "Intel" function number space. The fact that they currently align is just a happy accident. The kernel is free to break the 1:1 ioctl number to DSM function number relationship, and I think it would make the implementation cleaner in this case. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
