1 files changed, 10 insertions, 0 deletions

diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 5cf941774347..c2d24991bb2b 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -772,6 +772,16 @@ config DMAR_GFX_WA
          all the OS-visible memory. Hence the driver can continue
          to use physical addresses for DMA.
 
+config DMAR_FLOPPY_WA
+        bool
+        depends on DMAR
+        default y
+        help
+         Floppy disk drivers are know to bypass DMA API calls
+         thereby failing to work when IOMMU is enabled. This
+         workaround will setup a 1:1 mapping for the first
+         16M to make floppy (an ISA device) work.
+
 source "drivers/pci/pcie/Kconfig"
 
 source "drivers/pci/Kconfig"