APPLIED: [SRU][Q/P/O/N/J:linux-azure][PATCH 0/1] KVM-AMD Crash in GitHub Actions

[John Cabaj]

On 5/21/25 12:37 PM, John Cabaj wrote:
> BugLink: https://bugs.launchpad.net/bugs/2106673
> 
> SRU Justification
> 
> [ Impact ]
> 
> * Microsoft request to fix hyperv when nested kvm guest launched using Secure Boot
> 
> [ Fix ]
> 
> * SAUCE (no-up) patch on LKML under RFC "KVM: SVM: Workaround overly strict CR3 check by Hyper-V"
> 
> [ Test Plan ]
> 
> * Compile tested
> * Microsoft to test further
> 
> [ Where problems could occur ]
> 
> * This patch modifies some behavior of KVM and prevents putting regular values in the CR3
>    register which cause problems with Hyper-V. The change is localized, but could cause regressions
>    in Hyper-V virtualization if a code path depends on these values in CR3.
> 
> [ Other info ]
> 
> * SF#00409185
> 
> Vitaly Kuznetsov (1):
>    UBUNTU: SAUCE (no-up): KVM: SVM: Workaround overly strict CR3 check by
>      Hyper-V
> 
>   arch/x86/kvm/svm/svm.c | 30 +++++++++++++++++++++++++++++-
>   1 file changed, 29 insertions(+), 1 deletion(-)
> 

Applied to questing/plucky/oracular/noble/jammy linux-azure master-next 
branches.


Thanks,
John