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Diffstat (limited to 'arch/x86_64/Kconfig')
| -rw-r--r-- | arch/x86_64/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index 5cf94177434..c2d24991bb2 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" |