Bug 2692 - xhci: fix issue of cross page boundary in TRB prefetch
Summary: xhci: fix issue of cross page boundary in TRB prefetch
Status: RESOLVED FIXED
Alias: None
Product: ANCK 5.10 Dev
Classification: ANCK
Component: drivers (show other bugs) drivers
Version: unspecified
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: GuixinLiu
QA Contact: shuming
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Reported: 2022-11-02 15:37 UTC by LeoLiu-oc
Modified: 2023-01-17 15:12 UTC (History)
2 users (show)

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Description LeoLiu-oc zhaoxin_group 2022-11-02 15:37:58 UTC 
Description of problem:
On some Zhaoxin platforms, xHCI will prefetch TRB for performance
improvement. However this TRB prefetch mechanism may cross page boundary,
which may access memory not belong to xHCI. In order to fix this issue,
using two pages for TRB allocate and only the first page will be used.

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


How reproducible:


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Additional info:
Comment 1 maqiao alibaba_cloud_group 2023-01-17 15:12:38 UTC 
merged: https://gitee.com/anolis/cloud-kernel/pulls/827