Perform verification check in response to change in page table base register
AssigneeHewlett Packard Enterprise Development LP
InventorsGeoffrey Ndu, Nigel Edwards
Life of this patent
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Abstract
Examples disclosed herein relate to performing a verification check in response to receiving notification. A computing system includes a host processor, memory coupled to the host processor, and a device separate from the host processor capable of accessing the memory. The host processor has a page table base register. The host processor is configured to send a notification to the device when the page table base register changes. The device performs a verification check in response to receiving the notification.
Claims19
A device comprising:
- a trace monitor to receive a hardware processor trace, wherein the hardware processor trace comprises a notification that a content of a page table base register of a hardware processor of a computing system is changed;
- and
- a verifier to, responsive to receiving the notification, perform a verification check to detect tampering with the computing system.
A non-transitory machine-readable storage medium storing machine-readable instructions that, when executed by a machine, cause the machine to:
- receive a notification that a content of a page table base register of a hardware processor of the machine is changed;
- and
- responsive to the notification, perform a verification check to detect tampering with the machine.
Dependencies are inferred from the claim text.