ACPI: Taint kernel on ACPI table override (format corrected)
When an ACPI table is overridden (for now this can happen only for DSDT)
display a big warning and taint the kernel with flag A.
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 131936e..bbd8360 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -392,6 +392,13 @@
*new_table = initrd_table;
}
#endif
+ if (*new_table != NULL) {
+ printk(KERN_WARNING PREFIX "Override [%4.4s-%8.8s], "
+ "this is unsafe: tainting kernel\n",
+ existing_table->signature,
+ existing_table->oem_table_id);
+ add_taint(TAINT_OVERRIDDEN_ACPI_TABLE);
+ }
return AE_OK;
}