linux-kernel - [PATCH] iommu/arm-smmu: add actlr settings for mdss and fastrpc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251105075307.1658329-1-charan.kalla@oss.qualcomm.com>
Date: Wed,  5 Nov 2025 13:23:07 +0530
From: Charan Teja Kalla <charan.kalla@....qualcomm.com>
To: robin.clark@....qualcomm.com, will@...nel.org, robin.murphy@....com,
        joro@...tes.org, dmitry.baryshkov@....qualcomm.com
Cc: iommu@...ts.linux.dev, linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Charan Teja Kalla <charan.kalla@....qualcomm.com>
Subject: [PATCH] iommu/arm-smmu: add actlr settings for mdss and fastrpc

Add ACTLR settings for the device nodes with below compatibility
and is mainly targeted for sa8775p:
1) sa8775p-mdss
2) qcom,fastrpc-compute-cb

As a side note, "qcom,fastrpc" compatibility is already defined but that
seems inept as the devices that will be attached to the SMMU is going to
be with "qcom,fastrpc-compute-cb" compat string.

Signed-off-by: Charan Teja Kalla <charan.kalla@....qualcomm.com>
---
 drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index c21a401c71eb..c76f6076f487 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -47,6 +47,10 @@ static const struct of_device_id qcom_smmu_actlr_client_of_match[] = {
 			.data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
 	{ .compatible = "qcom,sm8550-mdss",
 			.data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
+	{ .compatible = "qcom,sa8775p-mdss",
+			.data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
+	{ .compatible = "qcom,fastrpc-compute-cb",
+			.data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
 	{ }
 };
 
-- 
2.34.1