On Thursday, July 18, 2013 04:44:20 PM H. Peter Anvin wrote: > On 07/18/2013 03:17 PM, Rafael J. Wysocki wrote: > >> > >> alias x86cpu:vendor:*:family:*:model:*:feature:*0081* crct10dif_pclmul > >> > >> This should cause udev to load the crct10dif_pclml module when cpu > >> support the PCLMULQDQ (feature code 0081). I did my testing during > >> development on 3.10 and the module was indeed loaded. > >> > >> However, I found that the following commit under 3.11-rc1 broke > >> the mechanism after some bisection. > >> > >> commit ac212b6980d8d5eda705864fc5a8ecddc6d6eacc > >> Author: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > >> Date: Fri May 3 00:26:22 2013 +0200 > >> > >> ACPI / processor: Use common hotplug infrastructure > >> Split the ACPI processor driver into two parts, one that is > >> non-modular, resides in the ACPI core and handles the enumeration > >> and hotplug of processors and one that implements the rest of the > >> existing processor driver functionality. > >> Rafael, can you check and see if this can be fixed so those > >> optimized > >> crypto modules for Intel cpu that support them can be loaded? > > > > I think this is an ordering issue between udev startup and the time when > > devices are registered. > > > > I wonder what happens if you put those modules into the initramfs image? > > > > OK, this bothers me on some pretty deep level... a set of changes > exclusively in drivers/acpi breaking functionality which had nothing to > do with ACPI, specifically CPU-feature-based module loading. Well, they are not exclusively in drivers/acpi, they are in drivers/base/cpu.c too and that most likely is the responsible part. > Please let me know what the investigation comes up with, or if I need to > get more directly involved. I will. Thanks, Rafael -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
