From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM

---
 kernel/Documentation/ABI/testing/sysfs-kernel-iommu_groups |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/kernel/Documentation/ABI/testing/sysfs-kernel-iommu_groups b/kernel/Documentation/ABI/testing/sysfs-kernel-iommu_groups
index 35c64e0..017f5bc 100644
--- a/kernel/Documentation/ABI/testing/sysfs-kernel-iommu_groups
+++ b/kernel/Documentation/ABI/testing/sysfs-kernel-iommu_groups
@@ -24,3 +24,12 @@
 		region is described on a single line: the 1st field is
 		the base IOVA, the second is the end IOVA and the third
 		field describes the type of the region.
+
+What:		/sys/kernel/iommu_groups/reserved_regions
+Date: 		June 2019
+KernelVersion:  v5.3
+Contact: 	Eric Auger <eric.auger@redhat.com>
+Description:    In case an RMRR is used only by graphics or USB devices
+		it is now exposed as "direct-relaxable" instead of "direct".
+		In device assignment use case, for instance, those RMRR
+		are considered to be relaxable and safe.

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