摘要:
Embodiments of apparatuses and methods for processing virtualization events in a layered virtualization architecture are disclosed. In one embodiment, an apparatus includes a event logic and evaluation logic. The event logic is to recognize a virtualization event. The evaluation logic is to determine whether to transfer control from a child guest to a parent guest in response to the virtualization event.
摘要:
Embodiments of apparatuses and methods for guest processes to access registers are disclosed. In one embodiment, an apparatus includes an interface to a first register, shadow logic, evaluation logic, and exit logic. The shadow logic is to, in response to a guest attempt to write data to the first register, cause the data to be written to a second register. The evaluation logic is to determine, based on the value of the data, whether to transfer control to a host in response to the guest attempt. The exit logic is to transfer control to the host after the data is written to the second register if the evaluation logic determines to transfer control.
摘要:
The present invention is a method and apparatus to generates an isolated bus cycle for a transaction in a processor. A configuration storage contains configuration parameters to configure a processor in one of a normal execution mode and an isolated execution mode. An access generator circuit generates an isolated access signal using at least one of the isolated area parameters and access information in the transaction. The isolated access signal is asserted when the processor is configured in the isolated execution mode. A bus cycle decoder generates an isolated bus cycle corresponding to a destination in the transaction using the asserted isolated access signal and the access information.
摘要:
A chipset is initialized in a secure environment for an isolated execution mode by an initialization storage. The secure environment has a plurality of executive entities and is associated with an isolated memory area accessible by at least one processor. The at least one processor has a plurality of threads and operates in one of a normal execution mode and the isolated execution mode. The executive entities include a processor executive (PE) handler. PE handler data corresponding to the PE handler are stored in a PE handler storage. The PE handler data include a PE handler image to be loaded into the isolated memory area after the chipset is initialized. The loaded PE handler image corresponds to the PE handler.
摘要:
One embodiment of the invention is method for resolving address space conflicts between a virtual machine monitor and a guest operating system. The method includes allocating an address space for the operating system and an address space for the monitor. The method also includes mapping a portion of the monitor into the address space allocated for the operating system and the address space allocated for the monitor, and locating another portion of the monitor in the address space allocated for the monitor. The method also includes detecting that the operating system attempts to access a region occupied by the portion of the monitor within the address space allocated for the operating system, and relocating that portion of the monitor within that address space to allow the operating system to access the region previously occupied by that portion of the monitor.
摘要:
In one embodiment, a method includes receiving a request to transition control to a virtual machine (VM) from a virtual machine monitor (VMM), determining that a single-stepping indicator is set to a single stepping value, and transitioning control to the VM. Further, if an execution of a first instruction in the VM completes successfully, control is transitioned to the VMM following the successful completion of the execution of the first instruction.
摘要:
In one embodiment, a method includes transitioning control to a virtual machine (VM) upon receiving a request from a virtual machine monitor (VMM), determining that the request to transition control is associated with a request to be informed of an open event window, performing an event window check to determine whether an even window of the VM is open, and transitioning control to the VMM if the event window check indicates that the event window of the VM is open.
摘要:
In one embodiment, a method for handling privileged events in a virtual machine environment includes detecting an occurrence of a privileged event, determining which one of multiple virtual machine monitors (VMMs) is to handle the privileged event, and transitioning control to this VMM.
摘要:
In one embodiment, a request to transition control to a virtual machine (VM) is received from a virtual machine monitor (VMM) and a determination is made as to whether the VMM has requested a delivery of a fault to the VM. If the determination is positive, the fault is delivered to the VM when control is transitioned to the VM.
摘要:
An access transaction generated by a processor is configured using a configuration storage containing a configuration setting. The processor has a normal execution mode and an isolated execution mode. The access transaction has access information. Access to the configuration storage is controlled. An access grant signal is generated using the configuration setting and the access information. The access grant signal indicates if the access transaction is valid.