Re: [User-mode-linux-user] 2.3.48_devfs

[Jeff D. <jd...@ka...>]

> it's perfect for my hardware.

Blazing fast processors and tons of everything :-) ?

> 	- 2.3.48_devfs-uml is more stable than 2.3.46-uml; the latter crashed
> within a few minutes and sometimes before it finished booting.
> 2.3.48_devfs stays up longer.

I don't remember fixing any bugs like that between .46 and .48.  Maybe bugs 
were fixed in the rest of the kernel.  One thing that will help stability when 
I put the packages out is that virtual consoles are turned off.  My forking 
and execing of xterm is causing memory corruption.  I have a fix in mind, and 
that will be added pretty quickly.

I do want to hear about panics and other strange behavior.  Especially if you 
can reproduce it.

> 	- For those without a devfs capable root_fs, the quick and easy
> workaround is to add devfs=nomount to the command line, ala ./linux
> devfs=nomount 

So you're one of the ones that grabbed the devfs kernel.  My release notes 
said not to do that :-)  I put it out for completeness, and for the masochists 
out there.

> 	- I'm sure it doesn't surprise you that I'm getting occasional errors
> on the uml console.  The latest (on 2.3.48_devfs w/ debian root_fs):
> Unimplemented syscall : 163
>                            Untested (16019) [0x10154c68]:
> syscall_kern.c line 662 

Something did a mremap.  Not all of the system calls are hooked up yet.  If 
you see that again, attach gdb to the tracing thread, and look at 
current_task.comm, and tell me what the command line was for it.  I like to 
watch the newly-hooked-up system calls run once just to make sure that I 
didn't mess something up.

> 	Am I right in guessing that you already know exactly from
> execute_syscall which ones need work, or is it useful to hear about
> these, either on the mailing list or privately? 

Yup.  Either way is fine.

> I'll try putting together my own root_fs at some point, but need a
> working loop device in my host kernel first; 2.3.48-i386 doesn't quite
> seem to have it yet.

Where do you get your kernels from?  My RH kernels have always had the loop 
device.

				Jeff