Bug 23279 - Hygon: Fix some bugs about CSV1/2/3 VMs in the KVM module
Summary: Hygon: Fix some bugs about CSV1/2/3 VMs in the KVM module
Status: NEW
Alias: None
Product: ANCK 5.10 Dev
Classification: ANCK
Component: X86 (show other bugs) X86
Version: unspecified
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: Guanjun
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Reported: 2025-08-05 22:21 UTC by wojiaohanliyang
Modified: 2025-08-05 22:23 UTC (History)
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Description wojiaohanliyang hygon_group 2025-08-05 22:21:39 UTC 
Description of problem:

- fa53a4853b0b anolis: KVM: SVM: CSV: fix CSV3 launch failures because of concurrent longterm pin

  Fix concurrent long-term pinning under a read lock when passing through devices to a CSV3 VM.

- 94cd4a2c9461 anolis: KVM: SVM: CSV: Return 0 at the beginning of csv_guest_hygon_coco_extension() for non-CSV3 VMs

  Avoid warnings in the csv_guest_hygon_coco_extension() when the VM is not CSV3 VM.

- c95deeec49cf anolis: KVM: SVM: The ASID range available for CSV2 guests vary across different firmware

  For CSV firmware with build < 1810, the ASID range is restricted.

- 9f079f67241e anolis: KVM: SVM: CSV is unsupported if both the firmware with a build ID < 1878 and SME is not in use

  For CSV firmware with build < 1878, KVM supports CSV only when the host kernel is using SME.

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Comment 1 小龙 admin 2025-08-05 22:23:51 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/5584