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Hi Florian,
We use MIPS 4kec.
Linux runs in Interrupt Compatibility Mode, and it will use
0x80000200 to store the "Jump" instruction.
Therefore, we can move Linux kernel to 0x80000204. Is it
right?
Another new question. If we modify Linux to use Ventored
Interrupt mode, can we gain much performance?
Regards,
Colin
----- Original Message -----
Sent: Tuesday, December 13, 2005 8:28
PM
Subject: Réf. : Re: To put Linux kernel as
closer as possible to 0x80000000
> Yoichi Yuasa wrote :
> Hi
>
> It has no problem.
> Kernel has reserved
space for exception handlers.
>
> Yoichi
>
>
2005/12/13, colin <colin@xxxxxxxxxxxxxx>:
>
>
> > Hi all,
> > We want to put Linux kernel as closer
as possible to the bottom of memory.
> > I know that there is some
stuff put in the beginning of memory, like
> > Exception
table.
> > So, what's the closest address to 0x80000000 that is
allowable to store
> > kernel?
You should just take care to start after reserved
exception/interruption vectors
0x80000000 : TLB Refull
0x80000080 : General Exception Vector
+ 32 instructions.
Depending on your architecture, those addresses may
vary (I don't know anything about MIPS64
BTW, what's your arch ?
-- Florian
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