From 09ea26f1bf31c381faf4504774326755d8c47108 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?N=C3=ADcolas=20F=2E=20R=2E=20A=2E=20Prado?= <nfraprado@collabora.com> Date: Mon, 30 Jan 2023 15:08:20 -0500 Subject: [PATCH] arm64: defconfig: Enable DMA_RESTRICTED_POOL MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: NÃcolas F. R. A. Prado <nfraprado@collabora.com> Link: https://lore.kernel.org/r/20230130200820.82084-2-nfraprado@collabora.com Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com> --- arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index ef17d32ed7e2..236b83e62712 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -1408,6 +1408,7 @@ CONFIG_CRYPTO_DEV_HISI_SEC2=m CONFIG_CRYPTO_DEV_HISI_ZIP=m CONFIG_CRYPTO_DEV_HISI_HPRE=m CONFIG_CRYPTO_DEV_HISI_TRNG=m +CONFIG_DMA_RESTRICTED_POOL=y CONFIG_CMA_SIZE_MBYTES=32 CONFIG_PRINTK_TIME=y CONFIG_DEBUG_KERNEL=y -- 2.30.9