page fault

page fault

[bharat]

hi Everyone
	i am novice in this field and trying to port hardhat linux on
my custome board i have configured whole kernel and  in last when i try to
start the /sbin/init function i get the error
PAGE FAULT IN INTERRUPT HANDLER
and sometime scheduling in interrupt
what should i do
please help me
thanks in anticipation
bharat

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[PATCH] export m8xx_cpm_hostalloc

[Andreas Oberritter]

Hi Tom,

to build an i2c driver as a module, m8xx_cpm_hostalloc must be exported.
We are using a driver which is not in the kernel tree[1]. I tried to
merge the in-kernel i2c driver with it, but I failed and don't have the
time to investigate why our driver works with the dbox2 board and the
in-kernel driver doesn't.

This function has been exported in 2.4. Is it ok to do that for 2.6,
too?

Regards,
Andreas

[1]:
http://cvs.tuxbox.org/cgi-bin/viewcvs.cgi/tuxbox/driver/i2c/dbox2_i2c.c?rev=1.28&content-type=text/vnd.viewcvs-markup


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page fault

[bharat]

hi all,
i am a newbie,so i may be far behind the curve,but please bear with me.
i am porting hardhat linux for MPPC860T for our custome hardware and i
am not using any bootloader instead i use my custome utility to download
kernel to board,in /arch/ppc/m8xx_setup.c in function m8xx_init i give

	bd_t *binfo;

        binfo =res;

        binfo->bi_memstart=0;
        binfo->bi_memsize=10*1024*1024;
        binfo->bi_intfreq=50;

#ifdef CONFIG_BLK_DEV_INITRD
        initrd_start = 10*1024*1024 + KERNELBASE;
        initrd_end = 16*1024*1024 + KERNELBASE;
#endif
as i want to use 10 mb of my ram for execution and rest up to 16 mb
for file system currently it is nfs mounted.
problem is that it all went ok in kernel space but as soon as it enters
in user space it starts giving PAGE_FAULTS.
how can i remove this.
Thanks in anticipation
--

YOU CAN ACHIEVE ANYTHING BY PROGRAMMING YOUR MIND-SET !

with warm regards
Bharat Bhushan
coral Telecom,Noida
india


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Re: page fault

[David Woodhouse]

On Sat, 2004-07-24 at 09:22 +0530, bharat wrote:
> problem is that it all went ok in kernel space but as soon as it enters
> in user space it starts giving PAGE_FAULTS.

You seem to have posted this in reply to Andreas Oberritter's message in
which he offered a patch to export m8xx_cpm_hostalloc().

Please could you explain why these are related -- did you only start
seeing this problem after you applied his patch?

--
dwmw2


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Page fault

[bharat]

hi,
the patch  has nothing to do with my page fault problem,it's by mistake,
went in answer to that patch .
i sincerely apologize for that.

--

YOU CAN ACHIEVE ANYTHING BY PROGRAMMING YOUR MIND-SET !

with regards
Bharat Bhushan


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