Please apply commit d81cadbe1642 ("KVM: SVM: Disable AVIC on SNP-enabled system without HvInUseWrAllowed feature") to the stable v6.12 tree. This patch prevents a kernel BUG by disabling AVIC on systems without suitable support for AVIC to work when SEV-SNP support is enabled in the host.
Thanks, Naveen
On Mon, Apr 21, 2025 at 11:00:39PM +0530, Naveen N Rao wrote:
Please apply commit d81cadbe1642 ("KVM: SVM: Disable AVIC on SNP-enabled system without HvInUseWrAllowed feature") to the stable v6.12 tree. This patch prevents a kernel BUG by disabling AVIC on systems without suitable support for AVIC to work when SEV-SNP support is enabled in the host.
We need an ack from the KVM maintainers before we can take this.
thanks,
greg k-h
On Tue, Apr 22, 2025 at 09:40:22AM +0200, Greg KH wrote:
On Mon, Apr 21, 2025 at 11:00:39PM +0530, Naveen N Rao wrote:
Please apply commit d81cadbe1642 ("KVM: SVM: Disable AVIC on SNP-enabled system without HvInUseWrAllowed feature") to the stable v6.12 tree. This patch prevents a kernel BUG by disabling AVIC on systems without suitable support for AVIC to work when SEV-SNP support is enabled in the host.
We need an ack from the KVM maintainers before we can take this.
Sure. Adding Sean and Paolo.
Sean, Paolo, Please let me know if you have concerns applying this change to v6.12 stable series.
Thanks, Naveen
On Tue, Apr 22, 2025, Naveen N Rao wrote:
On Tue, Apr 22, 2025 at 09:40:22AM +0200, Greg KH wrote:
On Mon, Apr 21, 2025 at 11:00:39PM +0530, Naveen N Rao wrote:
Please apply commit d81cadbe1642 ("KVM: SVM: Disable AVIC on SNP-enabled system without HvInUseWrAllowed feature") to the stable v6.12 tree. This patch prevents a kernel BUG by disabling AVIC on systems without suitable support for AVIC to work when SEV-SNP support is enabled in the host.
We need an ack from the KVM maintainers before we can take this.
Sure. Adding Sean and Paolo.
AIUI, there's no sane alternative, so:
Acked-by: Sean Christopherson seanjc@google.com
On Tue, Apr 22, 2025 at 08:57:51AM -0700, Sean Christopherson wrote:
On Tue, Apr 22, 2025, Naveen N Rao wrote:
On Tue, Apr 22, 2025 at 09:40:22AM +0200, Greg KH wrote:
On Mon, Apr 21, 2025 at 11:00:39PM +0530, Naveen N Rao wrote:
Please apply commit d81cadbe1642 ("KVM: SVM: Disable AVIC on SNP-enabled system without HvInUseWrAllowed feature") to the stable v6.12 tree. This patch prevents a kernel BUG by disabling AVIC on systems without suitable support for AVIC to work when SEV-SNP support is enabled in the host.
We need an ack from the KVM maintainers before we can take this.
Sure. Adding Sean and Paolo.
AIUI, there's no sane alternative, so:
Acked-by: Sean Christopherson seanjc@google.com
Now queued up, thanks.
greg k-h
linux-stable-mirror@lists.linaro.org
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Greg KH -
Naveen N Rao -
Sean Christopherson