Abstract: A communication method applied to a computer system that includes a first subsystem and a second subsystem. A safety level of the first subsystem is higher than a safety level of the second subsystem. The first subsystem includes a memory access checker. The method includes the memory access checker receives a memory access request from a memory access initiator, determines, based on preconfigured memory safety level division information, whether a safety level of a memory to be accessed by the memory access initiator matches a safety level of the memory access initiator, and allows the memory access initiator to access the memory address when the safety level of the memory matches the safety level of the memory access initiator.

Abstract: An error recovery method and apparatus, and a system are disclosed. At least two CPUs in a lockstep mode can exit the lockstep mode when an error occurs in at least one CPU, and the CPU in which the error occurs and a type of the error are determined. When the error can be recovered, the CPU in which the error occurs can be recovered according to a correctly running CPU. This helps the at least two CPUs run again at a position at which a service program is interrupted.

Abstract: An error recovery method and apparatus, and a system are disclosed. At least two CPUs in a lockstep mode can exit the lockstep mode when an error occurs in at least one CPU, and the CPU in which the error occurs and a type of the error are determined. When the error can be recovered, the CPU in which the error occurs can be recovered according to a correctly running CPU. This helps the at least two CPUs run again at a position at which a service program is interrupted.

Abstract: A communication method applied to a computer system that includes a first subsystem and a second subsystem. A safety level of the first subsystem is higher than a safety level of the second subsystem. The first subsystem includes a memory access checker. The method includes the memory access checker receives a memory access request from a memory access initiator, determines, based on preconfigured memory safety level division information, whether a safety level of a memory to be accessed by the memory access initiator matches a safety level of the memory access initiator, and allows the memory access initiator to access the memory address when the safety level of the memory matches the safety level of the memory access initiator.

Abstract: An error recovery method and apparatus, and a system are disclosed. At least two CPUs in a lockstep mode can exit the lockstep mode when an error occurs in at least one CPU, and the CPU in which the error occurs and a type of the error are determined. When the error can be recovered, the CPU in which the error occurs can be recovered according to a correctly running CPU. This helps the at least two CPUs run again at a position at which a service program is interrupted.

Abstract: An error recovery method and apparatus, and a system are disclosed. At least two CPUs in a lockstep mode can exit the lockstep mode when an error occurs in at least one CPU, and the CPU in which the error occurs and a type of the error are determined. When the error can be recovered, the CPU in which the error occurs can be recovered according to a correctly running CPU. This helps the at least two CPUs run again at a position at which a service program is interrupted.

Abstract: Embodiments of the present invention disclose a data processing method, a connection auditing device, and a system, and relate to the communications field. The data processing method includes: when a terminal connects to a remote virtual desktop, obtaining a capability type of the terminal; obtaining a service data packet, and recognizing a type of the service data packet; when the type of the service data packet matches the capability type of the terminal, sending the service data packet to the terminal; and when the type of the service data packet does not match the capability type of the terminal, sending the service data packet to the remote virtual desktop. In the embodiments of the present invention, service experience of a user is improved during terminal displaying.

Abstract: A method for upgrading a Hypervisor component includes calling, by a kernel of a virtual machine, a hypercall interface of a Hypervisor, and loading an upgrade file to an address space of the Hypervisor; calling, by the kernel of the virtual machine, the hypercall interface of the Hypervisor, and replacing an instruction at a starting position of the target function in the Hypervisor component with a first interrupt instruction; and if it is judged that a breakpoint exception is caused by the first interrupt instruction, calling, by the kernel of the virtual machine, the hypercall interface of the Hypervisor, and replacing the first interrupt instruction with a jump instruction, so as to upgrade the target function to the upgrade function. A device resource that upgrading the Hypervisor component needs to occupy can be reduced, and an impact caused by the upgrade on a service can be mitigated.