Bug 4323 - iommu/vt-d:Add support for detecting ACPI device in RMRR
Summary: iommu/vt-d:Add support for detecting ACPI device in RMRR
Status: NEW
Alias: None
Product: ANCK 4.19 Dev
Classification: ANCK
Component: mm (show other bugs) mm
Version: unspecified
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: wangrongwei
QA Contact: shuming
URL:
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Keywords:
Depends on:
Blocks:
 
Reported: 2023-03-02 20:11 UTC by LeoLiu-oc
Modified: 2024-06-20 11:36 UTC (History)
2 users (show)

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Description LeoLiu-oc zhaoxin_group 2023-03-02 20:11:53 UTC 
Description of problem:
Some ACPI devices need to issue dma requests to access
the reserved memory area.BIOS uses the device scope type
ACPI_NAMESPACE_DEVICE in RMRR to report these ACPI devices.
This patch add support for detecting ACPI devices in RMRR and in
order to distinguish it from PCI device, some interface functions
are modified.

Version-Release number of selected component (if applicable):


How reproducible:


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Additional info:
Comment 1 wangrongwei alibaba_cloud_group 2023-03-16 11:06:24 UTC 
这个issue不属于内存，建议更改为x86或arch。
assignee随便更新一下。
Comment 2 小龙 admin 2024-06-20 11:36:21 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/3369