The patch titled
pci/dmar: tone down warnings about invalid BIOS DMAR tables
has been added to the -mm tree. Its filename is
pci-dmar-tone-down-warnings-about-invalid-bios-dmar-tables.patch
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Subject: pci/dmar: tone down warnings about invalid BIOS DMAR tables
From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
We now know how to deal with these tables so that they are harmless. Use
the TAINT_FIRMWARE_WORKAROUND flag and don't say the BIOS is 'broken' as
this makes users think of hardware damage.
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: David Daney <ddaney@xxxxxxxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Paul Mundt <lethal@xxxxxxxxxxxx>
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Jesper Nilsson <jesper.nilsson@xxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: David Woodhouse <David.Woodhouse@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/pci/dmar.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff -puN drivers/pci/dmar.c~pci-dmar-tone-down-warnings-about-invalid-bios-dmar-tables drivers/pci/dmar.c
--- a/drivers/pci/dmar.c~pci-dmar-tone-down-warnings-about-invalid-bios-dmar-tables
+++ a/drivers/pci/dmar.c
@@ -615,12 +615,13 @@ int __init dmar_table_init(void)
static void warn_invalid_dmar(u64 addr, const char *message)
{
- WARN_ONCE(1, "Your BIOS is broken; DMAR reported at address %llx%s!\n"
- "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
- addr, message,
- dmi_get_system_info(DMI_BIOS_VENDOR),
- dmi_get_system_info(DMI_BIOS_VERSION),
- dmi_get_system_info(DMI_PRODUCT_VERSION));
+ WARN_TAINT_ONCE(1, TAINT_FIRMWARE_WORKAROUND,
+ "BIOS bug: DMAR reported at address %llx%s!\n"
+ "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
+ addr, message,
+ dmi_get_system_info(DMI_BIOS_VENDOR),
+ dmi_get_system_info(DMI_BIOS_VERSION),
+ dmi_get_system_info(DMI_PRODUCT_VERSION));
}
int __init check_zero_address(void)
_
Patches currently in -mm which might be from ben@xxxxxxxxxxxxxxx are
linux-next.patch
mptscsih-fix-first-line-of-kernel-doc-for-a-few-functions.patch
panic-allow-taint-flag-for-warnings-to-be-changed-from-taint_warn.patch
panic-allow-taint-flag-for-warnings-to-be-changed-from-taint_warn-checkpatch-fixes.patch
panic-add-taint-flag-taint_firmware_workaround-i.patch
pci-dmar-combine-the-bios-dmar-table-warning-messages.patch
pci-dmar-tone-down-warnings-about-invalid-bios-dmar-tables.patch
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