Bug 26891 - Buslock trap extra patch for openAnolis 6.6 kernel
Summary: Buslock trap extra patch for openAnolis 6.6 kernel
Status: NEW
Alias: None
Product: ANCK 6.6 Dev
Classification: ANCK
Component: X86 (show other bugs) X86
Version: unspecified
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: Guanjun
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-10-31 14:43 UTC by NarasimharaoPVS
Modified: 2025-10-31 15:00 UTC (History)
3 users (show)

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Description NarasimharaoPVS 2025-10-31 14:43:54 UTC 
Buslock trap patches for openAnolis 6.6 kernel:

Additional patch
x86/split_lock: Simplify reenabling


Unit test Results:
[amd@anolis ~]$ cpuid -1 -l 0x7 -s 0x0 -r
CPU:
   0x00000007 0x00: eax=0x00000001 ebx=0xf1bf97ab ecx=0x19415fde edx=0x10000110
[amd@anolis ~]$ sudo rdmsr 0x01d9
4
[amd@anolis ~]$ ./buslocktrap
10
[amd@anolis ~]$ dmesg | grep -i buslock
[ 1206.227299] x86/split lock detection: #DB: buslocktrap/1413540 took a bus_lock trap at address: 0x55a207cd2166
[ 1254.699805] x86/split lock detection: #DB: buslocktrap/1413843 took a bus_lock trap at address: 0x55e823240166
[amd@anolis ~]$
Comment 1 小龙 admin 2025-10-31 15:00:22 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/5955