On Thu, Dec 23, 2010 at 6:10 PM, Gustavo da Silva
wrote:
> Hi Everyone!
>
> Friends, could someone explain me the difference between Kernel Logical
> and Kernel Virtual Address?
AFAIK there are 3 types of addresses: physical, kernel virtual
(one-to-one mapped),
and ...user virtual addresses...
L
On Tue, Jan 4, 2011 at 8:40 PM, mohit verma wrote:
>
> hi all,
> i have seen many places in kernel where the variables specially the
> structures should be of fixed size independent of the architecture. i went
> through the definitions of them but dint get clearly (or frankly say
> ...dint
This guy has ported Linux to gcc4.x:
http://www.kernel.org/pub/linux/kernel/people/abdel/readme
I think that will help you
On Sun, Jan 9, 2011 at 6:14 PM, KK wrote:
> Hello All,
> I was going through the linux kernel newbie articles in
> kernelnewbies.com and found it very interesting. I download
On Thu, Jan 20, 2011 at 3:04 PM, sugnan prabhu wrote:
> Hi Mulyadi,
>
> Finally after making some study on the dprintk source, i found that it
> can be enable by setting the config CONFIG_CPU_FREQ_DEBUG
>
> http://codemonkey.org.uk/projects/cpufreq/
>
> But the above link say that i ne
On 2/1/13, Kevin Wilson wrote:
> Hi all,
> question:
>
> In copy_process() we have:
>
> static struct task_struct *copy_process(unsigned long clone_flags,
> unsigned long stack_start,
> struct pt_regs *regs,
>
Check for the SYSCALL_DEFINE[0-6] macros.
commit 1a94bc34768e463a93cb3751819709ab0ea80a01
Author: Heiko Carstens
Date: Wed Jan 14 14:13:59 2009 +0100
[CVE-2009-0029] System call wrapper infrastructure
From: Martin Schwidefsky
By selecting HAVE_SYSCALL_WRAPPERS architectures can
Yeah, now you have to find a problem which people are trying to
solve... Keep searching a mailing lists. and that's the only way you
will be able to figure out what you can fix or improve.
On 5/31/13, Daniel Hamacher wrote:
> Greetings.
>
> My name is Daniel and I am starting out in Linux Kernel
On 2/3/14, Ahmed A wrote:
> Hello,
>
> I have a server with onboard Intel 10G ports (82599). When I load the kernel
> module driver for these ports, everything is fine, I can see the newly
> created ethX devices using "ip addr show". However, after I assign an IP
> address, and right after I issu
On 7/16/14, Robert Clove wrote:
> Hi All,
>
>
> I want to add data to the packet header.
>
> I used the skb_copy_expand to make the copy of the skb and data.
> Now in the headroom i want to add some data.
> How can i do that,please suggest .
__skb_push(skb, ) to adjust the skb->data pointer
>
>
CCing the list
On 7/16/14, Denis Kirjanov wrote:
> On 7/16/14, Robert Clove wrote:
>
> Please don't reply privately
>
>> skb is the new skb
>> and
>> size is the size of the variable that i will push in new header
>> For eg:
>> struct my_head_stru
On 7/18/14, lx wrote:
> hi :
> the source code of net_rx(struct net_device *dev) is:
> http://lxr.oss.org.cn/source/drivers/net/ethernet/cirrus/cs89x0.c#L670
>
> I can't understand codes about malloc buffer.
> ##
> 684 /* Malloc up new buffer. *
On 7/24/14, Lucas Tanure wrote:
> Hi,
>
> Line 2 of arch/arch/powerpc/boot/io.h :
>
> 1 #ifndef _IO_H
> 2 #define __IO_H
> 3
> 4 #include "types.h"
>
> Should be _IO_H, not __IO_H. I'm right ?
Yes
> Thanks
>
> --
> Lucas Tanure
> +55 (19) 988176559
>
--
Regards,
Denis
_
No one will ever help you with the generic questions. _That is not how the
mailing list work_.
You really have to dig _on your own_ for that. Don't ask useless questions,
show us something concrete.
Better invest your time in Stevens TCP/IP illustrated volumes(1 and
2nd one)
and Unix network
On Thu, Jan 27, 2011 at 10:27 PM, mindentropy wrote:
> On Thursday 27 Jan 2011 12:15:47 pm Mulyadi Santosa wrote:
>> On Thu, Jan 27, 2011 at 13:40, prabhu wrote:
>> > No, because 32bit code will tell the datatype size and i think pointer
>> > variable depends on architecture.
>> > So 64 bit proce
Also uml (user mode linux) doesn't work on many architectures.
Actually I've started porting it to PowerPC...
On Mon, Mar 14, 2011 at 6:46 PM, Javier Martinez Canillas
wrote:
>> There was written that
>>> Only the ARM and x86 architectures are currently supported.
>>
>> Does it mean that there is
It's the same thing as you read:
THREAD size is 8kb so the operation looks like the following:
current_stack_pointer & ~(8191) == current_stack_pointet & 0xFE00
(last 13 bits are 0)
On Fri, Sep 16, 2011 at 3:38 PM, Vijay Chauhan wrote:
> Hi list,
>
> I would like to know how the thread_info a
How does it related to the kernel?
On 6/21/12, 王哲 wrote:
> Hi all:
>I want to see some source code of some commands,for
> example,halt,reboot,uptime,and so on.
>
> but i don't kown where to download? can you give me some advice?
>
> Thanks in advance!
>
--
Regards,
Denis
Forgot to CC kernelnewbies:
Did you pass the __GFP_COMP flag to __get_free_pages?
On 8/9/12, J.Hwan Kim wrote:
> Hi, everyone
>
> How can I allocate physically contiguous huge page in kernel module ?
> The routine of _get_fee_pages() fails whenever there are much free
> memory in system.
>
> I
At the moment of forking a new process do_fork() creates a new stack for the
task by using alloc_thread_info_node():
struct page *page = alloc_pages_node(node, THREADINFO_GFP,
THREAD_SIZE_ORDER);
On 9/13/12, Rajat Sharma wrote:
> "The kernel
Yes, for example IBM 970MP CPU:
• Dual processors on a single chip
– Each processor has its own dedicated storage subsystem, including a
1 MB L2 cache per core.
– Each processor has its own dedicated resets, external interrupt,
thermal diode, and voltage plane
(common logic is powered on).
– Commo
#define INR_OPEN_CUR 1024 /* Initial setting for nfile rlimits */
On 12/5/12, Vijay Chauhan wrote:
> Hello,
>
> How many files a process can open at a time? Is it configurable?
>
> I found following in the kernel code:
>
> ..
> .max_fds= NR_OPEN_DEFAULT,
> ..
> ..
> #define NR_OP
Look at the include/asm-generic/resource.h
On 12/5/12, Denis Kirjanov wrote:
> #define INR_OPEN_CUR 1024 /* Initial setting for nfile rlimits */
>
>
> On 12/5/12, Vijay Chauhan wrote:
>> Hello,
>>
>> How many files a process can open at a time? Is it configu
On 2/5/16, Ran Shalit wrote:
> Hello,
>
> I read the readme about dma API, but still don't understand how it
> should be used
> It is said that dma_alloc_coherent is responsible for allocating the
> buffer.
>
> 1. But how to trigger the dma transaction to start ?
> 2. Is there a callback when it
On 3/22/17, Stefan Tatschner wrote:
> Hallo everybody,
>
> currently I am trying to understand the internal memory allocation
> mechanisms of the kernel. I am particularly interested in the
> translation of virtual memory addresses to physical addresses.
> Additionally, how are these physical addr
On 2/13/18, Matwey V. Kornilov wrote:
> Hi all,
>
> I have to following message in the logs. What I know is how to convert
> 'Code' section to assembler or how to convert function/offset to source
> code line. Now I wonder how to use stack and register dumps. Given I
> have all debugging symbols f
On 3/15/18, Aleksei Fedotov wrote:
>>> It looks like passing O= or KBUILD_OUTPUT= doesn't work for out of tree
>>> modules.
>
>> It doesn't? It should, what is the result when you try to do that?
>
> It is trying to use path specified in O= as path to the pre-build
> kernel and fails to find kern
On Tuesday, July 9, 2019, Muni Sekhar wrote:
> Hi All,
>
>
> My Kernel is built with the following options:
>
>
>
> CONFIG_CC_STACKPROTECTOR=y
>
> CONFIG_CC_STACKPROTECTOR_STRONG=y
>
>
>
>
>
> We use out-of-tree kernel modules in our project and I need to measure the
> performance of it by using
On Tuesday, July 9, 2019, Muni Sekhar wrote:
> On Tue, Jul 9, 2019 at 10:56 PM Denis Kirjanov wrote:
> >
> >
> >
> > On Tuesday, July 9, 2019, Muni Sekhar wrote:
> >>
> >> Hi All,
> >>
> >>
> >> My Kernel is built wi
On 7/6/22 09:47, A mp wrote:
Hi everyone,
My name is Andrew.
Recently, I went through the Linux Foundations intro to kernel development
course. As part of the course, it gets us to put a print statement inside of
the uvcvideo driver, recompile the kernel and then load the module and check
s you the current log level
Any other suggestions perhaps?
Thanks,
Andrew.
On Wed, Jul 06, 2022 at 10:53:12AM +0300, Denis Kirjanov wrote:
On 7/6/22 09:47, A mp wrote:
Hi everyone,
My name is Andrew.
Recently, I went through the Linux Foundations intro to kernel development
course. As
On 3/22/23 02:20, Panagiotis Filippakopoulos wrote:
> Hello. I would like to ask, what your advise would be to a person that
> wants to get in the kernel development industry, without having a coputer
> science degree. I attended some classes for computer science, but due to
> some difficulties
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