en Copyright 2015 Java http://172.16.0.5:8080/history/linux-6.15/Documentation/ABI/testing/sysfs-bus-peci#42bed52b peci: Add sysfs interface for PECI busPECI devices may not be discoverable at the time when PECI controller isbeing added (e.g. BMC can boot up when the Host system is still in S5).Since we currently don't have the capabilities to figure out the Hostsystem state inside the PECI subsystem itself, we have to rely onuserspace to do it for us.In the future, PECI subsystem may be expanded with mechanisms that allowus to avoid depending on userspace interaction (e.g. CPU presence couldbe detected using GPIO, and the information on whether it's discoverablecould be obtained over IPMI).Unfortunately, those methods may ultimately not be available (supportwill vary from platform to platform), which means that we still needplatform independent method triggered by userspace.Acked-by: Joel Stanley <joel@jms.id.au>Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com>Link: https://lore.kernel.org/r/20220208153639.255278-8-iwona.winiarska@intel.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> List of files: /linux-6.15/Documentation/ABI/testing/sysfs-bus-peci Tue, 08 Feb 2022 15:36:33 +0000 Iwona Winiarska <iwona.winiarska@intel.com>