* Kernel link address assumption
@ 2011-02-24 18:13 Himanshu Chauhan
2011-02-24 18:16 ` Kevin D. Kissell
0 siblings, 1 reply; 5+ messages in thread
From: Himanshu Chauhan @ 2011-02-24 18:13 UTC (permalink / raw)
To: linux-mips
Hi,
Does Linux kernel for MIPS assumes that its link address is always in Kseg0?
What if I change the link address to somewhere in useg?
Regards
Himanshu
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Kernel link address assumption
2011-02-24 18:13 Kernel link address assumption Himanshu Chauhan
@ 2011-02-24 18:16 ` Kevin D. Kissell
2011-02-24 18:21 ` Himanshu Chauhan
0 siblings, 1 reply; 5+ messages in thread
From: Kevin D. Kissell @ 2011-02-24 18:16 UTC (permalink / raw)
To: Himanshu Chauhan; +Cc: linux-mips
On 02/24/11 10:13, Himanshu Chauhan wrote:
> Hi,
>
> Does Linux kernel for MIPS assumes that its link address is always in
> Kseg0?
> What if I change the link address to somewhere in useg?
Your page fault handlers will be in for an interesting time. ;o)
What you describe can be, and is done, for virtualized kernels running
on top
of a hypervisor, but there's a bit more involved than just changing the
link address.
/K.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Kernel link address assumption
2011-02-24 18:16 ` Kevin D. Kissell
@ 2011-02-24 18:21 ` Himanshu Chauhan
2011-02-24 21:44 ` Kevin D. Kissell
2011-03-01 8:06 ` Yang Shi
0 siblings, 2 replies; 5+ messages in thread
From: Himanshu Chauhan @ 2011-02-24 18:21 UTC (permalink / raw)
To: Kevin D. Kissell; +Cc: linux-mips
On Thursday 24 February 2011 11:46 PM, Kevin D. Kissell wrote:
> On 02/24/11 10:13, Himanshu Chauhan wrote:
>> Hi,
>>
>> Does Linux kernel for MIPS assumes that its link address is always in
>> Kseg0?
>> What if I change the link address to somewhere in useg?
> Your page fault handlers will be in for an interesting time. ;o)
>
> What you describe can be, and is done, for virtualized kernels running
> on top
> of a hypervisor, but there's a bit more involved than just changing
> the link address.
Hi Kevin,
You just caught that. Thats what I am trying to evaluate. What all I
would need to do apart from changing the link address. I am working on a
bare metal hypervisor for MIPS architecture.
Any pointers?
Regards
Himanshu
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Kernel link address assumption
2011-02-24 18:21 ` Himanshu Chauhan
@ 2011-02-24 21:44 ` Kevin D. Kissell
2011-03-01 8:06 ` Yang Shi
1 sibling, 0 replies; 5+ messages in thread
From: Kevin D. Kissell @ 2011-02-24 21:44 UTC (permalink / raw)
To: Himanshu Chauhan; +Cc: linux-mips
On 02/24/11 10:21, Himanshu Chauhan wrote:
> On Thursday 24 February 2011 11:46 PM, Kevin D. Kissell wrote:
>> On 02/24/11 10:13, Himanshu Chauhan wrote:
>>> Hi,
>>>
>>> Does Linux kernel for MIPS assumes that its link address is always
>>> in Kseg0?
>>> What if I change the link address to somewhere in useg?
>> Your page fault handlers will be in for an interesting time. ;o)
>>
>> What you describe can be, and is done, for virtualized kernels
>> running on top
>> of a hypervisor, but there's a bit more involved than just changing
>> the link address.
>
> You just caught that. Thats what I am trying to evaluate. What all I
> would need to do apart from changing the link address. I am working on
> a bare metal hypervisor for MIPS architecture.
>
> Any pointers?
>
I've done a design of something like this for a non-MIPS architecture,
but I'd prefer someone who's done this for MIPS (and I know that there
are people out there who have) advise you.
Regards,
Kevin K.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Kernel link address assumption
2011-02-24 18:21 ` Himanshu Chauhan
2011-02-24 21:44 ` Kevin D. Kissell
@ 2011-03-01 8:06 ` Yang Shi
1 sibling, 0 replies; 5+ messages in thread
From: Yang Shi @ 2011-03-01 8:06 UTC (permalink / raw)
To: Himanshu Chauhan; +Cc: Kevin D. Kissell, linux-mips
Himanshu Chauhan 写道:
> On Thursday 24 February 2011 11:46 PM, Kevin D. Kissell wrote:
>
>> On 02/24/11 10:13, Himanshu Chauhan wrote:
>>
>>> Hi,
>>>
>>> Does Linux kernel for MIPS assumes that its link address is always in
>>> Kseg0?
>>> What if I change the link address to somewhere in useg?
>>>
>
>
>> Your page fault handlers will be in for an interesting time. ;o)
>>
>> What you describe can be, and is done, for virtualized kernels running
>> on top
>> of a hypervisor, but there's a bit more involved than just changing
>> the link address.
>>
> Hi Kevin,
>
> You just caught that. Thats what I am trying to evaluate. What all I
> would need to do apart from changing the link address. I am working on a
> bare metal hypervisor for MIPS architecture.
>
You need setup suitable TLB mappings for Linux kernel in bootloader or
Hypervisor.
Yang
> Any pointers?
>
> Regards
> Himanshu
>
>
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-03-01 8:06 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-02-24 18:13 Kernel link address assumption Himanshu Chauhan
2011-02-24 18:16 ` Kevin D. Kissell
2011-02-24 18:21 ` Himanshu Chauhan
2011-02-24 21:44 ` Kevin D. Kissell
2011-03-01 8:06 ` Yang Shi
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