[MIPS]mcheck error

[MIPS]mcheck error

[POORNIMA R]

Hi,

I am working on MIPS architecture and my kernel version
is linux-2.6.10  and  I am a newbie to MIPS architecture.
If I try inserting  any module (.ko), I get meck exception
due to multiple matching entries in TLB

1. What is the reason for multiple enteries in TLB
due to module insertion?

2. Should the TLB operations be performed with interrupts disabled?

Poornima

_________________________________________________________________
Find a local pizza place, movie theater, and more….then map the best route! 
http://maps.live.com/default.aspx?v=2&ss=yp.bars~yp.pizza~yp.movie%20theater&cp=42.358996~-71.056691&style=r&lvl=13&tilt=-90&dir=0&alt=-1000&scene=950607&encType=1&FORM=MGAC01

Re: [MIPS]mcheck error

[Ralf Baechle]

On Thu, Aug 16, 2007 at 01:34:13PM +0000, POORNIMA R wrote:

> I am working on MIPS architecture and my kernel version
> is linux-2.6.10  and  I am a newbie to MIPS architecture.
> If I try inserting  any module (.ko), I get meck exception
> due to multiple matching entries in TLB

Linux 2.6.10 is now well over 2 1/2 years old so forgive if my memory
on bugs that can cause machine checks is fading a little.  You should
upgrade.  REALLY.

> 1. What is the reason for multiple enteries in TLB
> due to module insertion?

A machine check exception will be generated if during a TLB lookup (for
example during instruction fetch or loading/storing the data for a load
rsp. store instruction) multiple entries match.

> 2. Should the TLB operations be performed with interrupts disabled?

Yes; the kernel does so.

  Ralf

PS: Ditch that 2.6.10 antique!  It belongs into a vitrine in the
MIPSonian Institude, not a life a computer system :-)

PPS: Have you considered upgrading your kernel?