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authorHuang Ying <ying.huang@intel.com>2011-12-08 11:25:49 +0800
committerLen Brown <len.brown@intel.com>2012-01-17 03:54:44 -0500
commitb54ac6d2a25084667da781c7ca2cebef52a2bcdd (patch)
treeb4dbaa790dcecff6b5b0772846d43b360f6389d7 /arch
parentb4e008dc53a31cb4bf6a12d9dbaf1d5c6070a838 (diff)
downloadlinux-linaro-stable-b54ac6d2a25084667da781c7ca2cebef52a2bcdd.tar.gz
ACPI, Record ACPI NVS regions
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 mechanism. 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 record ACPI NVS regions, so that we can avoid request resources for memory region inside it. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/e820.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 303a0e48f076..51c3b186e5b9 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -714,7 +714,7 @@ void __init e820_mark_nosave_regions(unsigned long limit_pfn)
}
#endif
-#ifdef CONFIG_HIBERNATION
+#ifdef CONFIG_ACPI
/**
* Mark ACPI NVS memory region, so that we can save/restore it during
* hibernation and the subsequent resume.
@@ -727,7 +727,7 @@ static int __init e820_mark_nvs_memory(void)
struct e820entry *ei = &e820.map[i];
if (ei->type == E820_NVS)
- suspend_nvs_register(ei->addr, ei->size);
+ acpi_nvs_register(ei->addr, ei->size);
}
return 0;