On Wed, Nov 24, 2010 at 03:21:59PM -0800, Darrick J. Wong wrote: > As I recall, Pavel had an objection that it wasn't clear to him that ACPI > advertising a capping ability necessarily meant that the platform hardware > would actually _enforce_ that cap, so I put in a DMI hook so that the cap only > appears on systems where ACPI advertises the ability /and/ someone can verify > that it's enforced outside software (either by patching the DMI table or by > supplying a module parameter). > > I guess we were afraid that someone would build an ACPI power meter and then > require software to read the cap out of ACPI and enforce it(??) though I can't > find a link to that discussion. I'll just attach it below, since the marc.info > archive of mm-commits doesn't seem to have caught it. The spec defines bit 2 of the capabilities list as "Power meter supports hardware enforced limit" - I don't think we're meant to worry about the OS here. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- 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
