apic cscp

1 read IRR, ISR, and query words 0 1 0 1 read IMR 0x1 1 high-impedance data bus status 1 x high-impedance data bus status APIC 1. Concept APIC (advanced programmable interrupt control) advanced programmable interrupt controller. It consists of two parts: Io APIC: located in the south bridge, used to handle various interruptions caused by devices on the bridge. I

The working principle of the interrupt controller between different CPU systems is quite different, this article is the sister of "the analysis of circuit breaker in Linux MIPS64R2 PCI", mainly analyzes the principle, interrupt configuration and processing process of broadwell-de x86_64 APIC. And try to answer the following questions: Why is the x86 used in the IO-APIC/LAPIC framework, and what is

Document directory 33.3.1 Virtualization of interrupt vector space 33.3.3 examples of handling of external interrupts Chapter 29 APIC virtualization and virtual interrupts Object:The vmcs provided des controls that enable the virtualization of interrupts and the advanced programmable interrupt controller (APIC ). Usage/means:When these controls are used, the processor will emulate your accesses to the

Apic-v, APIC virtualization, is an optimization of the Intel CPU for virtual interrupts and APIC virtualization, and using APIC-V can substantially reduce the number of VM exit results due to APIC access, tracking virtual APIC sta

Cisco APIC-EM API management notification Spoofing Vulnerability (CVE-2016-1386)Cisco APIC-EM API management notification Spoofing Vulnerability (CVE-2016-1386) Release date:Updated on:Affected Systems: Cisco Application Policy Infrastructure Controller Enter 1.0 (1) Description: CVE (CAN) ID: CVE-2016-1386Cisco APIC-EM is a software defined network control

In Linux, ACPI and APIC-general Linux technology-Linux technology and application information are described below. A friend of mine has a problem with the startup of his notebook system. ubuntu is used. It is said that the startup speed is getting slower. Today, it is completely unable to get in, and the progress bar stops halfway through. I looked at it and press alt + f1 after the progress bar is stopped. The following message is displayed: Checkin

Cisco APIC Access Control Vulnerability (CVE-2015-4235)Cisco APIC Access Control Vulnerability (CVE-2015-4235) Release date:Updated on:Affected Systems: Cisco Application Policy Infrastructure Controller Cisco Application Policy Infrastructure Controller Cisco Application Policy Infrastructure Controller Description: CVE (CAN) ID: CVE-2015-4235Cisco Application Policy Infrastructure Controller can provide

Release date:Updated on: Affected Systems:Linux kernel Description:--------------------------------------------------------------------------------Bugtraq id: 64319CVE (CAN) ID: CVE-2013-6376 Linux Kernel is the Kernel of the Linux operating system.

, which is often referred to as an interrupt request line.Back to top of pageAPIC vs 8259AThe CPU of the X86 computer provides only two external pins for interrupts: NMI and INTR. Where NMI is an unshielded interrupt, which is typically used for power-down and physical memory parity; The INTR is a shielded interrupt that can be interrupted by setting the interrupt screen bit, which is primarily used to accept interrupt signals from external hardware, which are passed to the CPU by the interrupt

that the kernel periodically query the state of the device, and then make the appropriate processing; interrupt (interrupt) Let the hardware signal to the kernel when needed (the kernel is active for the hardware). The first scenario makes the kernel do a lot of work, because polling periodically repeats, consumes CPU time, and is inefficient, so it's usually a second scenario. Note 1 From a physical standpoint, an interruption is an electrical signal generated by a hardware device and fed dire

request line.Back to top of pageAPIC vs 8259AThe CPU of the X86 computer provides only two external pins for interrupts: NMI and INTR. Where NMI is an unshielded interrupt, which is typically used for power-down and physical memory parity; The INTR is a shielded interrupt that can be interrupted by setting the interrupt screen bit, which is primarily used to accept interrupt signals from external hardware, which are passed to the CPU by the interrupt controller.There are two common types of int

correspond to different interrupts, and each interrupt is identified by a unique digital ID, which is often referred to as an interrupt request line.Back to top of pageAPIC vs 8259AThe CPU of the X86 computer provides only two external pins for interrupts:NMI and INTR. Where NMI is an unshielded interrupt, which is typically used for power-down and physical memory parity; The INTR is a shielded interrupt that can be interrupted by setting the interrupt screen bit, which is primarily used to acc

signal generated by hardware devices and directly sent to the input pin of the interrupt controller (such as 8259A, then the interrupt controller sends the corresponding signal to the processor. Once the processor detects this signal, it will interrupt the work it is currently processing and then process the interruption. After that, the processor will notify the OS that an interruption has occurred. In this way, the OS can properly handle this interrupt. Different devices have different interr

changes once, and this voltage change is the request from the device, which is equivalent to saying that the device has a request to be processed./proc/interrupts fileOn a Linux machine,/proc/interrupts This file contains information about which interrupts are being used and how many times each processor has been interrupted.# cat/proc/interruptsCPU0 CPU1 CPU2 CPU30:3710374484 0 0 0 Io-apic-edge Timer1:20 0 0 0 Io-

When installing the operating system on a wave Inspur server, a 0x0000005c blue screen error appears, determined to be caused by x2apic, enter the BIOS's CPU setup option, set the X2APIC option to disable, reboot the machine, and complete the installation.First explain the APIC (Advanced Program Interrupt Controller), and do not mix with ACPI (Advanced Configuration and Power Interface). The system can run in APIC