[PATCH v3 2/2] arm64: defconfig: Enable DMA_RESTRICTED_POOL

[AngeloGioacchino Del Regno]

Il 30/01/23 21:08, Nícolas F. R. A. Prado ha scritto:
> Enable support for restricted DMA pools which provide a level of DMA
> memory protection on systems with limited hardware protection
> capabilities, such as those lacking an IOMMU.
> 
> For instance, mt8192-asurada-spherion makes use of this to provide a
> restricted DMA region for WiFi since its MT7921E WiFi card is connected
> through PCIe, and the MT8192 SoC doesn't have an IOMMU context for the
> PCIe controller.
> 
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado at collabora.com>
> 

On MT8173 Elm, MT8192 Spherion, MT8195 Tomato:

Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>