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Justin Hall 2019-03-26 07:27:13 -07:00
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windows/security/information-protection/kernel-dma-protection-for-thunderbolt.md
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@ -98,7 +98,7 @@ No, Kernel DMA Protection only protects against drive-by DMA attacks after the O
DMA-remapping is supported for specific device drivers, and is not universally supported by all devices and drivers on a platform. To check if a specific driver is opted into DMA-remapping, check the values corresponding to the DMA Remapping Policy property in the Details tab of a device in Device Manager*. A value of 0 or 1 means that the device driver does not support DMA-remapping. A value of 2 means that the device driver supports DMA-remapping. DMA-remapping is supported for specific device drivers, and is not universally supported by all devices and drivers on a platform. To check if a specific driver is opted into DMA-remapping, check the values corresponding to the DMA Remapping Policy property in the Details tab of a device in Device Manager*. A value of 0 or 1 means that the device driver does not support DMA-remapping. A value of 2 means that the device driver supports DMA-remapping.
Please check the driver instance for the device you are testing. Some drivers may have varying values depending on the location of the device (internal vs. external). Please check the driver instance for the device you are testing. Some drivers may have varying values depending on the location of the device (internal vs. external).
*For Windows 10 versions 1803 and 1809, the property field in Device Manager uses a GUID, as highlighted in the image below *For Windows 10 versions 1803 and 1809, the property field in Device Manager uses a GUID, as highlighted in the following image.
![Kernel DMA protection user experience](images/device-details-tab.png) ![Kernel DMA protection user experience](images/device-details-tab.png)