Hi, Thomas, On Tue, 2010-10-26 at 12:53 +0800, Thomas Gleixner wrote: > B1;2401;0cLen, > > On Mon, 25 Oct 2010, Len Brown wrote: > > > > NAKed-by: Ingo Molnar <mingo@xxxxxxx> > > > > Everybody knows that Linux has a lot to learn about RAS. > > > > I think to catch up, we need to play to Linux's strengths > > of continuous improvement. If we halt patches in this area > > then we could wait forever for the "perfect design". > > it's not about perfect design. It's about creating new user space > ABIs. The patches introduce another error reporting user space ABI > with an ad hoc "fits the needs" design. > > This is my major point of objection. > > I agree that Linux needs improvement on the RAS side, but does this > lack of features justify a new user space ABI which is totally > disconnected to existing RAS facilities ? > > No, it does not. It's not our problem that Intel wasted time on > creating another character device driver to report errors to user > space. The time spent to do so would have been sufficient to do a > proper integration into the existing infrastructure. > > I would not care at all if these patches would just introduce some > weird in kernel interfaces as we can clean that up at will. But > introducing a new user space ABI is setting the disconnect of RAS > related facilities into stone. > > From Kconfig: > > EDAC is designed to report errors in the core system. > These are low-level errors that are reported in the CPU or > supporting chipset or other subsystems: > memory errors, cache errors, PCI errors, thermal throttling, etc.. > If unsure, select 'Y'. > > So please explain why your error reporting is so different from the > above that it justifies a separate facility. And you better come up > with a real good explanation other than we looked at EDAC and it did > not fit our needs. As far as I know, EDAC guys plan to use some other "perfect interface" in the future. So I think the current state is really waiting for the "perfect design". Best Regards, Huang Ying -- 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
