Commit 92946bc7 authored Apr 03, 2010 by Ben Hutchings Committed by David Woodhouse May 19, 2010

panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I')



This taint flag will initially be used when warning about invalid ACPI
DMAR tables.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

parent b2be0527

Documentation/oops-tracing.txt

+3 −0

Original line number	Diff line number	Diff line
		@@ -260,6 +260,9 @@ characters, each representing a particular tainted value.

		11: 'C' if a staging driver has been loaded.

		12: 'I' if the kernel is working around a severe bug in the platform
		firmware (BIOS or similar).

		The primary reason for the 'Tainted: ' string is to tell kernel
		debuggers if this is a clean kernel or if anything unusual has
		occurred. Tainting is permanent: even if an offending module is

include/linux/kernel.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -344,6 +344,7 @@ extern enum system_states {
		#define TAINT_OVERRIDDEN_ACPI_TABLE 8
		#define TAINT_WARN 9
		#define TAINT_CRAP 10
		#define TAINT_FIRMWARE_WORKAROUND 11

		extern void dump_stack(void) __cold;

kernel/panic.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -178,6 +178,7 @@ static const struct tnt tnts[] = {
		{ TAINT_OVERRIDDEN_ACPI_TABLE, 'A', ' ' },
		{ TAINT_WARN, 'W', ' ' },
		{ TAINT_CRAP, 'C', ' ' },
		{ TAINT_FIRMWARE_WORKAROUND, 'I', ' ' },
		};

		/**
		@@ -194,6 +195,7 @@ static const struct tnt tnts[] = {
		* 'A' - ACPI table overridden.
		* 'W' - Taint on warning.
		* 'C' - modules from drivers/staging are loaded.
		* 'I' - Working around severe firmware bug.
		*
		* The string is overwritten by the next call to print_tainted().
		*/