• Huang Ying's avatar
    ACPI, APEI, Resolve false conflict between ACPI NVS and APEI · 4134b8c8
    Huang Ying authored
    Some firmware will access memory in ACPI NVS region via APEI.  That
    is, instructions in APEI ERST/EINJ table will read/write ACPI NVS
    region.  The original resource conflict checking in APEI code will
    check memory/ioport accessed by APEI via general resource management
    mech.  But ACPI NVS region is marked as busy already, so that the
    false resource conflict will prevent APEI ERST/EINJ to work.
    
    To fix this, this patch excludes ACPI NVS regions when APEI components
    request resources.  So that they will not conflict with ACPI NVS
    regions.
    Reported-and-tested-by: default avatarPavel Ivanov <paivanof@gmail.com>
    Signed-off-by: default avatarHuang Ying <ying.huang@intel.com>
    Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    4134b8c8
apei-base.c 16.3 KB