virtio drivers

Linux virtual machines on KVM use virtio disksSystem: centos6.6 64-bitThere are few articles on the net, how to change the disk of Linux virtual machine to use Virtio diskBecause the CENTOS6 or above system already contains the Virtio driver, there is no need to execute the following statement to load the kernel modulemodprobe

As mentioned in the previous article, in the Virtio device initialization process, will be created through SETUP_VP Virtqueue, the current Virtqueue queue through vring to actually work, we can use Virtqueue as an interface class, and Vring_ Virtqueue as an implementation of this interface/** * virtqueue-a queue to register buffers for sending or receiving. * @list: The chain of virtqueues for this device * @callback: The function to call when buffers

With the release of qemu2.1, you can see that QEMU supports Vhost-user. From the introduction can be seen, this is the original vhost-backend from kernel moved to the userspace, this and the original virtio structure what is the difference. And this feature has brought about improvements. Virtio In the virtual machine, you can simulate the E1000 network card through QEMU, such classic network card is a gen

QEMU 'virtio-serial-bus.c 'Local Buffer Overflow VulnerabilityQEMU 'virtio-serial-bus.c 'Local Buffer Overflow Vulnerability Release date:Updated on:Affected Systems: QEMU Description: Bugtraq id: 76201CVE (CAN) ID: CVE-2015-5745QEMU is an open source simulator software.QEMU has a local buffer overflow vulnerability in 'virtio-serial-bus.c '. Attackers can

QEMU hw/virtio. c DoS Vulnerability (CVE-2015-7295)QEMU hw/virtio. c DoS Vulnerability (CVE-2015-7295) Release date:Updated on:Affected Systems: QEMU QEMU Description: CVE (CAN) ID: CVE-2015-7295QEMU is an open source simulator software.QEMU enables virtio-net support and does not include large or merged receiving buffers. It receives a large number of giant fra

Release date:Updated on: Affected Systems:RedHat Enterprise Linux Workstation 6RedHat Enterprise Linux Server 6RedHat Enterprise Linux HPC Node 6RedHat Enterprise Linux Desktop 6QEMUDescription:--------------------------------------------------------------------------------Bugtraq id: 48574Cve id: CVE-2011-2212 QEMU is an open source simulator software. Qemu kvm has the Local Privilege Escalation Vulnerability in the virtqueue implementation. Local attackers can exploit this vulnerability to

2008 in the case of a system failure, you can browse to find the INF file in the Repair mode loading, but there is no interface when the windows2012. When repairing the windows2012 system under KVM, 2012RE cannot see the hard disk, then the Virtio driver needs to be loaded.The study of the half-day finally found, in fact, an order.Drvload.exe D:\viostor\2k12r2\amd64\viostor.inf Load Virtio DriveAttached: Se

Release date: 2011-12-06Updated on: 2011-12-07 Affected Systems:RedHat Enterprise Linux Workstation 6RedHat Enterprise Linux Server 6RedHat Enterprise Linux HPC Node 6RedHat Enterprise Linux Desktop 6QEMUDescription:--------------------------------------------------------------------------------Bugtraq id: 50933Cve id: CVE-2011-4111 QEMU is an open source simulator software. Qemu kvm has a local privilege escalation vulnerability in Virtio. Local a

This article is done original, reproduced please specify the source, respect for the original.Writing this article, I refer to some blogs on the Internet:Http://bbs.chinaunix.net/thread-3634524-1-1.htmlHttp://www.bkjia.com/gjrj/800182.htmlAlso refer to the "Linux driver development in detail" 3.4 chapters, to achieve the establishment of their own drive directory.The driving example in this article is: Linux device Driver Development detailed second edition of global Mem Tow, Song Baohua Editor'

Make [2]: *** no rule to make target 'drivers/Char/tianc_ LCD .o ', needed by 'drivers/Char/built-in.o'. Stop. Make [2]: *** no rule to make target 'drivers/Char/tianc_ LCD .o ', needed by 'drivers/Char/built-in.o'. Stop. Make [1]: *** [Drivers/Char] Error 2 Make: *** [

Control program.In addition, routing and address resolution are handled by the kernel. Loadable Modules The features provided by the Linux kernel can be extended at run time, that is, when the system is up and running, we can add or remove functionality from the kernel to the kernel.Code that can be added to the kernel at run time is called a "module."The Linux kernel supports several types of modules, including but not limited to device drivers.Each module consists of target code

How to use the device tree of linux drivers and how to use the device tree of linux drivers The Device Tree describes the hardware from the software perspective, and DTS is the Device Tree source file. DTC is responsible for converting DTS to DTB, and DTB is the binary form of DTS for machine use. The Device Tree is a tree structure. Each child node except the root node has a unique parent node, which can h

This is a 2014kdd, geographic location service paper. Contents: 1) First, the author raised a valuable Question: recommend taxi drivers with routes that can be carried to the guests at the minimum cost. 2) Secondly, the novelty of the problem is that in the past, there were scattered recommendation points. This paper is a recommendation route. It can be said that the location service provided goes further. 3) then, two sub-problems are pointed out: a)

The stream device driver is actually the driver for exporting standard stream interface functions. This is the definition above. In wince, all stream devices export stream device interfaces, so that Device Manager in wince can load and manage these stream device drivers. Architecture of stream device driver First, I declare that I copied this image. When wincestarts, oal(oal.exe) First loads the kernel. DLL, and then kernel. DLL load device. DLL, devi

device in the private_data member that represents the opened file pointer filp for other operation functions. Release Operation: int yjpLED_release(struct inode *inode, struct file *filp){filp->private_data = NULL;return 0;} Release the content allocated by open in filp-> private_data. Write operation: ssize_t yjpLED_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos){ssize_t retval;struct yjpLED *dev;dev = filp->private_data;if(down_interruptible(dev->sem))return -ERE

Poll for linux drivers and poll for linux driversPOLL operations 1. POLL execution process: Poll is a system call. Its kernel entry function is sys_poll. sys_poll calls do_sys_poll directly without any processing. The execution process of do_sys_poll can be divided into three parts: 1. Copy the input pollfd array to the kernel space. Because the copy operation is related to the array length, this is an O (n) operation, in do_sys_poll, the code in this

This document describes how to use ctl_code to communicate with a Windows NT driver. generally, user-Mode Applications can communicate with kernel-mode drivers by calling createfile and deviceiocontrol, if a driver in the kernel state wants to perform similar operations with another driver, how can this problem be achieved? Next, we will provide a detailed description. The main idea is to first get the handle of another driver, then construct an IRP,

If you are interested in Linux user-state driver development, please read this article, otherwise please drift over.user-space Device Drivers in linux:a First Look | initial knowledge of Linux User state device driversuser-space Device Drivers in linux:a first look Mats liljegrensenior software ArchitectDevice drivers in Linux is traditionally run in kernel spac

interactions, the corresponding recommendation system is also for smart devices such as smart phone development. Indeed, the problem of building a mobile referral system for the taxi industry is still a lot of space.Recently, the rich GPs trajectory of taxis has made it possible to do a car rental in the field of new methods. A lot of energy into the use of taxi trajectory data to do mobile referral system. These systems can extract energy-ecient traffic patterns from historical trajectory data

TIPS:1. please install the driver in sequence. The downloaded driver is an executable file, but it is not installed only when the file is released. By default, it is released to C: in the/Drivers/win/*** directory, go to the file directory to continue the installation.2. before installing WINXP, you need to change the hard disk to compatible mode in the BIOS. Otherwise, the system will prompt that the hard disk or blue screen cannot be found during in