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authorHuang Ying <ying.huang@intel.com>2011-12-08 11:25:50 +0800
committerLen Brown <len.brown@intel.com>2012-01-17 03:54:46 -0500
commit4134b8c8811f23aa8a281db50dcee64dda414736 (patch)
tree92b5c931590dba047f6634b401a45b6f8ccd1aed /include
parentb54ac6d2a25084667da781c7ca2cebef52a2bcdd (diff)
ACPI, APEI, Resolve false conflict between ACPI NVS and APEI
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: Pavel Ivanov <paivanof@gmail.com> Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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