diff options
Diffstat (limited to 'drivers/pci/dmar.c')
| -rw-r--r-- | drivers/pci/dmar.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index 4484ac089772..5f6b915d0d82 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -33,10 +33,10 @@ #include <linux/timer.h> #include <linux/irq.h> #include <linux/interrupt.h> +#include <linux/tboot.h> #include <linux/dmi.h> -#undef PREFIX -#define PREFIX "DMAR:" +#define PREFIX "DMAR: " /* No locks are needed as DMA remapping hardware unit * list is constructed at boot time and hotplug of @@ -414,6 +414,12 @@ parse_dmar_table(void) */ dmar_table_detect(); + /* + * ACPI tables may not be DMA protected by tboot, so use DMAR copy + * SINIT saved in SinitMleData in TXT heap (which is DMA protected) + */ + dmar_tbl = tboot_get_dmar_table(dmar_tbl); + dmar = (struct acpi_table_dmar *)dmar_tbl; if (!dmar) return -ENODEV; |