On Mon, Mar 07, 2016 at 04:41:57PM -0500, Valdis.Kletnieks@xxxxxx wrote: > > lspci says: > 00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04) > > Not sure why I only see it on reboots - that means that when powering up, the kernel > gets handed a device config it likes, but when rebooting, something is leaving the > device in a config the kernel doesn't want to see. Okay, so the BIOS defines one RMRR entry: DMAR: RMRR base: 0x000000cdb11000 end: 0x000000cdb30fff But the device-scope doesn't seem to match any existing devices in your system. At least no device gets the RMRR mappings later on. That doesn't really matter, as the the fault-address of 0xcdacd000 is outside of the defined RMRR range anyway. Looking at the fault-address as system physical, is would be in this range of system memory: BIOS-e820: [mem 0x00000000cd99b000-0x00000000ce3a0fff] reserved Which is reserved for BIOS use. This looks very much like a missing RMRR entry for that range, that has the sata controler in its device scope. Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
