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

[Philip Cox]

On Wed, 2024-06-12 at 15:27 -0500, John Cabaj wrote:
> 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(+)
> 
> -- 
> 2.34.1
> 
> 

-- 
Acked-by: Philip Cox <philip.cox at canonical.com>

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