General :: "KVM ... Consists Of A Loadable Kernel Module, Kvm.ko That Provides The Core Virtualization Infrastructure"
Feb 27, 2011
At linux-kvm.org it is stated: "KVM ... consists of a loadable kernel module, kvm.ko that provides the core virtualization infrastructure" and yet there's no mention of Xen, which runs as the hypervisor with KVM. The site seems to be implying the module is the hypervisor. My question to you is: What is the relationship between KVM and Xen on a server that is "running KVM"?
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Jul 30, 2010
I upgraded my kernel in my Debian Lenny to version 2.6.32-bpo.4-amd64 to fix a problem with a software and ALSA-related issues. The thing is that now, when I boot, eth1 is not enabled and I have to "load" (I guess) the driver each time. To do this, I go to the folder where all the files for the drivers are and I run:
modprobe lib80211
and then
insmod wl.ko
That I got from the readme file. That gets the wireless working perfectly again, but when I reboot the wireless is dead again and I have to run the commands above again. I imagine that what I should do is to build the driver again, for my new kernel. However, according to the readme file, before I need to install linux-headers-generic and build-essential. With build-essential, it says it's already the newest version, and with the linux-headers, I don't know which one should I install for my kernel! I thought it would be the linux-headers-2.6.32-bpo.4-xen-amd64, but when I tried that, this is what happened:
debian:/home/hernan/Programas/hybrid_wl# apt-get install linux-headers-2.6.32-bpo.4-xen-amd64
Reading package lists... Done
Building dependency tree
[code]....
So the warning says something about the MODULE_LICENSE being missing... how to build the driver again to make it load each time I boot?
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Nov 10, 2015
I'm working on my iptables rules on a debian 8 vps and I tried to install iptables-persistent but I was told "Unable to locate package"...
Where can I get this so that I may save my rules for reboot?
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May 21, 2010
I wrote a hello world loadable module and tried to pack it as a .deb package. While trying to do so, I came across some technique that were applicable to userland applications.
Is there any way to pack a loadable module in to .deb package?
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Jun 26, 2010
Is there a way to programmatically determine whether a particular driver support is built-in rather than a loadable module? I'd be grateful if somebody would share how. I have written a shell script using the RTC (real time clock). I can check whether the rtc-cmos kernel module exists and load the module accordingly as needed, but I don't know how to determine when the driver is built-in. Of course, if the driver is built-in then the module does not exist.
I seem to recall there is a method to query the kernel config file (/proc/config.gz), through which I probably could grep for the CONFIG_RTC_DRV_CMOS parameter. I also can check whether /proc/driver/rtc exists. If that file exists then either the driver is built-in or the module was loaded.I realize the rtc-cmos driver is built-in with the standard Debian kernel build, but I still would like a way to query where the driver is supported.Is there a straightforward or direct method to query the kernel whether a particular driver is built-in?
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Apr 22, 2010
I want to add some code in existing linux2.6.33.2 to enhance kernelI want to know how to start and where to add code.
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Jan 30, 2011
I need to install module u32 into the netfilter module for kernel 2.6.27.
I did not see the source code in the kernel version I have. where can I find the code for U32 module.
I have checked "netfilter.org" and looks like POM is discontinued. Is the u32 module committed to kernel version 2.6.27 or need to patch it. If yes, where can I find the patch?
I building the kernel for a MIPS processor.
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Mar 21, 2011
i am having following lines in a file called test.
subscribe parser for dinesh
extend size for dinesh
subscribe parser for anish
unsubscribe parser for dinesh
extend size for arvind
I want to delete all lines which contains the string "dinesh". Is it possible.
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Aug 12, 2010
I have a program consists of header files, .cpp, .c, a Makefile and need to include the problem instances file (.tim).May i know how to compile and run them? From google, i have heard bout the command make.
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Apr 12, 2010
I was wondering if anyone can assist me. I am looking to build a server with Debian as the host. When I installed Debian (Squeeze) the default kernel was "2.6.32-3-trunk-amd64". When I tried to install 'Virtualbox' application, I got a failure because I didn't have the 'kernel-headers' installed on my machine. I noticed there are no specific header package the 'trunk' kernel I was using. I have a few questions so I guess I should begin:
Is it safe to remove the 'trunk' kernel and boot my system on just the regular 2.6.32-3-amd64 kernel? Is this OK or not recommended? Please explain whatever is the correct answer. This is my 1st time using a 'Trunk' kernel so I don't know the in's and out's of it.
If I am using Debian 'Testing' for virtualization via 'Vbox', is there a specific kernel I "should" be using?
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Sep 1, 2010
If you select "support virtualization" during install, you get the xen kernel installed.
Some things do not work with this kernel (e.g. nVidia drivers). So my question is whether it is possible to install both kernels (xen and ordinary) and select between them with grub at boot time?
I did try this a while ago, by first installing with xen and then manualy adding the ordinary kernel, but the ordinary kernel failed to boot (for reasons I don't now recall - sorry). Clearly, there must be differences in the "virtualization" build other than the kernel.
The alternative, if I want to play with virtualization, would be to have two entirely separate installations, but this seems like a waste of space when surely almost everything must be identical?
I can't find anything in the Centos Xen documentation about this.
Before I try again I would just like to check if anyone actually knows if this is possible, or if not why not?
Or can it be done with KVM?
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Feb 22, 2010
What is the error "invalid module format" and the message "insert kernel module" mean? And whats the reason for the same?
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Dec 15, 2010
I have been spending many days trying to figure out if is possible to implement para-virtualization with Xen on my Fedora Cora 14 with the following kernel and architecture 2.6.35.6-48.fc14.x86_64.I have read many documents that made me crazy at all, and finally they don't have many sense for me, probably because my english is very poor and many times I am not able to understand the meaning of those.It's so frustrating for me.Summarizing, what I want to do or to know is if is possible to run Xen dom0 kernel on my machine and then running some guest or domU over it.I've already known that there are not xen-dom0 kernel packages like in older Fedora versions (for instance Fedora 9) what makes things easier. I want to know if I would have to built my own kernel from kernel source repositories and how?, because tried it before and It didn't work probably cause there was something wrong in my building.I'm very willing to provide you as many information as you want or need to solve this unbeatable situation.
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Aug 18, 2010
I have a Samsung phone GT-B3210. For some time I was unable to find working Windows drivers for it. I eventually gave up looking. Then one time I was charging phone over its USB port and booted Ubuntu and was pleasantly surprised when I saw phone's Ī¼SD card reader on my desktop. I now need to switch to Gento and would like to be able to work with phone there too. Lsusb tells me it's detected as Bus 007 Device 006: ID 04e8:663f Samsung Electronics Co., Ltd SGH-E720/SGH-E840but lsmod wasn't very helpful. On the list of loaded modules, I wasn't able to find one which looks like it's related to the phone.
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Jan 25, 2010
I have tried installing Vmware-Server 1.0.10 on Fedora Core 12. After installing all packages it fails on building the vmmon module. In the internet i found many patches and vmware-any-any-updates...but nothing worked. My Kernel Vresion is 2.6.31.12-174.2.3.fc12.i686.PAE...
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Aug 6, 2010
I'd like openSUSE to automatically load a kernel module (e.g. libsas) at boot time even no device requires it. In Ubuntu, you would add the module name to the file /etc/modules. Is this the correct place for openSUSE as well?
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Oct 25, 2010
I'm pretty new to this whole (micro)kernel architecture story.
Im wondering if a kernel module is running in kernel or in user space?
Is a driver running as kernel module slower than a driver build into kernel?
If so, are there some current articles, benchmarks?
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Oct 28, 2010
what is the module that is used to process font in Linux kernel?
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Jul 24, 2011
I wish to recompile serial_core module to make a change in the way ioctl works. I don't wish to rebuild the whole kernel package. Can someone point me to the proper method?? I know I will need to download the kernel headers etc. But I would like to avoid the unneeded compiles of things I don't need to recompile.
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Mar 13, 2011
I update my last kernl to 2.6.38-rc7 but when I launch VirtualBox, on stdout.The vboxdrv kernel module is not loaded. Either there is no module available for the current kernel (2.6.38-rc7) or it failed to load. Please recompile the kernel module and install it by sudo /etc/init.d/vboxdrv setup.
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Jul 16, 2010
Recently I was trying to look into vmware pvscsi modules for newly announced linux kernel 2.6.35-rc2. I compiled the kernel with option: make oldconfig where it asked me for various interactive options and all I did is Kept pressing the Enter ENTER key(Donno if that is the correct way to slect default ).The Kernel Compilation anyway went fine and I can see new kernel at grub screen, booted and it went fine.Now when I explored I found that nor the vmware_balloon and vmw_pvscsi modules are present which means I need to install these modules.I came to know that recently a new version of the vmware memory drivers being included through this page:
[URL]
where you can see an entry like:
Code:
MODULE_AUTHOR("VMware, Inc.");
MODULE_DESCRIPTION("VMware Memory Control (Balloon) Driver");
-MODULE_VERSION("1.2.1.0-K");
+MODULE_VERSION("1.2.1.1-k");
Doesn't it mean that the new kernel has new driver version inboxed?Also, I tried to install modules through modprobe and insmod(seems that this doesnt work) but couldnt do that.
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Aug 31, 2010
I am trying to write a kernel module that will DMA my custom card. Right now when i plug the card into linux no valid PCI device shows up (meaning I probably have a error on my end, i know) however, If I halt the system at startup in the bootloader (uboot) I am able to directly access the card as I know in uboot the physical memory address that is mapped to my device. Is there a way I can access the card in a simliar fashion in linux?
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Jan 21, 2010
I have a loadable module, simple enough I believe it should run on any 2.6 kernel. I want to force the load and test that assumption. How can I do it?
ismod does not seem to notice the -f in 2.7 modprobe has -f but cannot locate the module.No go. So I read the manpage for modprobe which says: modprobe looks in the module directory /lib/modules/'uname -r'.So I copied MYMODULE.ko to /lib/modules/2.6.(the only directory in here) and type: modprobe -f MYMODULE.ko.Still can't locate MYMODULE.ko.I notice there are no other .ko modules in that directory; so I go in deeper to kernel/drivers/char, guessing about the char directory, and copy MYMODULE.ko there.
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Dec 22, 2010
im doing a school assignement and i cant find any info about this anywhere. How do i make sure that a module is loaded into the kernel upon boot?
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Jan 25, 2010
I am using FC9, I want to write a module that will always show current time after booting.But for that I need not only to load module using insmod/modprobe, but also to compile that module during boot time.How can I perform this 2 steps correctly.
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Mar 13, 2011
i have written some really basic loadable kernel modules. There are a couple of concepts that i'll like to get cleared.
In a tutorial, the Makefile was given as follows-
obj-m += try.o
all:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
clean:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
I understand that -C option of 'make' changes the current directory to /lib/modules/$(shell uname -r)/build (which depends on my kernel).
Now, my question is why to change to that particular directory? Also M=$(PWD) will hold the dir where i have written the module. Why is it required? What does 'modules' at the end of that line indicate?
Q2> We need to include <linux/module.h> and <linux/kernel.h> in a module. If i am right, the module uses kernel headers for these definitions. But how does 'make' find these definitions.
Q3> We are planning to write a custom scheduler for linux kernel. cat /sys/block/sda/queue/scheduler gives us the currently loaded schedulers. How do we expose our scheduler to linux kernel so that we can use it by switching to it.
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Nov 25, 2010
I use iptables firewall (v1.4.1) installed on FC8. I'm trying to limit the inflow traffic for the port 1723 to certain MAC addresses. To experiment with the mac option, I've written the following iptables rule:
Quote:
iptables -A INPUT -m -mac --mac-source 10:08:08:08:08:10 -j ACCEPT
It didn't work. It gave me this error message:
Quote:
iptables v1.4.1: Couldn't load match `-mac':/usr/local/libexec/xtables/libipt_-mac.so: cannot open shared object file: No such file or directory
Try `iptables -h' or 'iptables --help' for more information. Does that mean the mac module wasn't installed/enabled?
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Nov 4, 2010
I have an issue that is fixed by changing the lpfc driver to run using MSI interrupts. This is done by adding "options lpfc lpfc_use_msi=2" /etc/modprobe.conf.local file.
Is there a way to make this change using kernel boot parameters?
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Oct 10, 2010
I am facing problem(system gets crash) while I try to send IPv6 packet by using my kernel module. I have given the code and makefile for my module. I will appreciate if any one shares any tester module for sending IPv6 packets.The kernel version that I am using is 2.6.9 and it supports for IPv6.
file name: rtp_pkt_tx.c
#include "linux/kernel.h"
#include "linux/module.h"
#include "linux/skbuff.h"
#include "linux/init.h"
[Code]...
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Jul 25, 2010
I am trying to install atheros AR5007EG on my toshiba laptop -i figured out that best way to install this wireless card is through madwifi -while configuring madwifi i get this error
I am posting the output of different commands so you can understand better -i manually tried to link the build directories to kernel-source which failed - i am not sure exactly what kernel source is and how i can link to kernel source -
My output:
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