On 11/20/2018 04:08 PM, Sinan Kaya wrote: > One version is: > "if HEST table is present, ignore _OSC" > or > Another version is: > "if HEST table is present, make sure that FW sets _OSC bit for AER to > false. Otherwise, warn like crazy that this BIOS is broken and needs > an update and can cause all sorts of trouble" ACPI 6.2 Ch 6.2.11.3, Table 6-197 PCI Express Advanced Error Reporting control The firmware sets this bit to 1 to grant control over PCI Express Advanced Error Reporting. If firmware allows the OS control of this feature, then in the context of the _OSC method it must ensure that error messages are routed to device interrupts as described in the PCI Express Base Specification. Additionally, after control is transferred to the OS, firmware must not modify the Advanced Error Reporting Capability. If control of this feature was requested and denied or was not requested, firmware returns this bit set to 0.
