[SRU][n:linux-azure][PATCH 0/1] Kernel fails to enable XSAVE when running in a “v5” AMD SEV-SNP VM

[John Cabaj]

BugLink: https://bugs.launchpad.net/bugs/2069204

SRU Justification

[Impact]

* Request from MSFT to include patch to disable CET Shadow Stack on SEV-SNP. Due to CPUID emulation bug not being fixed in VMs until October 2024, this feature is being disabled in the interim.

[Fix]

* Clean cherry-pick SAUCE patch from MSFT tree, https://github.com/dcui/linux
* cdf5cdd: "x86/hyperv: temporarily disable CET SS on SEV-SNP due to a paravisor bug"

[Test Plan]

* Compile tested
* Boot tested
* Microsoft tested

[Regression potential]

* Changes isolated, minimal regression risk

[Other info]

* SF #00387447

Dexuan Cui (1):
  UBUNTU: SAUCE: x86/hyperv: temporarily disable CET SS on SEV-SNP due
    to a paravisor bug

 arch/x86/kernel/cpu/mshyperv.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

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2.34.1