/um does
UML uses the host schedule itself ?
Regards,
Abhi
-Original Message-
From: Jeff Dike [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 21, 2007 7:25 PM
To: Krishnappa Abhijith-A21204
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] Regarding Process
Hi,
Regarding fork() implementation UML in tracing thread (tt)
mode
Whenever we call fork in UML the following happens:
2 process gets created
1 on UML say U_1 and 1 on HOST say H_1
Process in host gets created by tracing thread but how does a process in
UML gets created ?
Also
Hi,
Regarding VM in UML (tracing thread mode).
Why we need a seprate VM for UML as we create a new process in host for
every process that created in UML and the new HOST address space is
provided by Host kernel itself ?
Thanks,
Abhi
--
Hi,
Regarding Kernel mode in UML process. This question is on UML TT
mode
A UML process wil be in Kernel mode only for executing the getpid(), and
also some signals is a UML specified stack.
Is there any other way that UML process executes in kernel mode. ?
Also when UML process enters the
Hi,
Regarding Virtual Memory Emulation in UML (TT mode).
UML will create a file of Physical mem size and it allocates memory to
UML process by mmap() ing it.
Also in Jeff's article I read that Kernel's text and Data are located in
the process address space
Why the kernels text and dat
Hi,
Regarding Context switching in UML.
Each process running in UML will have corresponding process in HOST.
So when the context switching in HOST happens, UML has to switch the
corresponding UML process by saving context etc...
will this be done by tracing thread Also how does process
Hi,
Is the below flow correct for UML (TT mode)
1. UML process wants to execute a sys call say open().
2. UML TT comes to know this annuls with getpid(), and UML TT executes
open() on behalf of UML process.
3. UML process executes the getpid() and returns and signals TT.
4. By this time U
Hi,
SORRY for bugging you guys so much...
Regarding fork() implementation in UML
I was going through the below code
long sys_fork(void)
{
long ret;
current->thread.forking = 1;
ret = do_fork(SIGCHLD, UPT_SP(¤t->thread.regs.regs),
¤t->thread.regs, 0, NULL, NULL);
curr
Hi,
I have a question regarding system call implementation on
Linux
In order to execute the system call in user space, the process is made
to execute the system call switch on its kernel stack
Why this is done... ?
Also UML queues a signal ( SIGUSR ) to the process in order to make
the signals that host KERNEL delivers ?
Pls let me know.
Thanks,
Abhi
-Original Message-
From: Jeff Dike [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 14, 2007 7:40 PM
To: Krishnappa Abhijith-A21204
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] Regarding
Hi,
I'm Abhi new to UML.
I had a question on Process address space in UML.
Will there be a tracing thread for each process created in UML ? which
is responsible for system call tracking ?
Also will the address space of a process in UML also consists of the
corresponding Tracing thread ?
P
nappa Abhijith-A21204
Cc: User-mode Linux Kernel Development
Subject: Re: [uml-devel] Regarding getpid
On Tue, 12 Dec 2006, Krishnappa Abhijith-A21204 wrote:
> "Process system calls must be nullified in the host, and
> this is done by converting them into getpid. "
>
Hi ,
"Process system calls must be nullified in the host, and
this is done by converting them into getpid. "
How is system calls are nullified by converting them to getpid() ?
Pls let me know.
Regards,
Abhi
-
T
, December 07, 2006 11:36 AM
To: Krishnappa Abhijith-A21204
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] User mode linux Source code
On Thu, Dec 07, 2006 at 12:12:37PM +0800, Krishnappa Abhijith-A21204
wrote:
> I'm a newbie to UML.Can you pp
Hi All,
I'm a newbie to UML.Can you ppl let me know from
where I can download UML source code ?
Thanks,
Abhijith
-
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