ACK: [SRU][o/n:linux-azure][PATCH 0/1 v2] Revert fix for "Kernel fails to enable XSAVE when running in a “v5” AMD SEV-SNP VM"

Magali Lemes magali.lemes at canonical.com
Thu Sep 12 18:21:22 UTC 2024


On 06/09/2024 14:43, John Cabaj wrote:
> BugLink: https://bugs.launchpad.net/bugs/2079841
> 
> SRU Justification
> 
> [Impact]
> 
> * LP #2069204 disabled CET Shadow Stack on SEV-SNP due to CPUID emulation bug not being fixed in VMs until October 2024.
> * This issue is now fixed, so the patch can be reverted.
> 
> [Fix]
> 
> * Revert "UBUNTU: SAUCE: x86/hyperv: temporarily disable CET SS on SEV-SNP due to a paravisor bug"
> 
> [Test Plan]
> 
> * Compile tested
> * Boot tested
> 
> [Regression potential]
> 
> * Reverting back to previous state, so regression very unlikely.
> * Changes isolated, minimal regression risk
> 
> [Other info]
> 
> * SF #00387447
> 

Acked-by: Magali Lemes <magali.lemes at canonical.com>

> John Cabaj (1):
>    Revert "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 deletions(-)
> 



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