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

[John Cabaj]

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(-)

-- 
2.43.0