| Message ID | 20240612202739.25050-1-john.cabaj@canonical.com |
|---|---|
| Headers | show |
| Series | Kernel fails to enable XSAVE when running in a “v5” AMD SEV-SNP VM | expand |
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 > >
On 12-06-2024 22:27, 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(+) > Acked-by: Thibault Ferrante <thibault.ferrante@canonical.com> -- Thibault
On 6/12/24 3:27 PM, 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(+) > Applied to noble:linux-azure master-next branch. Also applied to oracular:linux-azure master-next branch cleanly, though it was missed in the initial patch request. Thanks, John
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(+)