Public bug reported: 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 ** Affects: linux-azure (Ubuntu) Importance: Undecided Status: New ** Description changed: SRU Justification [Impact] * Request from MSFT to include patch to disable CET Shadow Stack on SEV- - SNP. Due to CPUID emulation bug not being fixedin VMs until October + 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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2069204 Title: Kernel fails to enable XSAVE when running in a “v5” AMD SEV-SNP VM To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/2069204/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
