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SubjectRe: [PATCH] PowerPC: kernel: compiling issue, make additional room in exception vector area
On 2013年04月25日 17:05, Chen Gang wrote:
> On 2013年04月25日 17:00, Michael Neuling wrote:
>>>>
>>>> Signed-off-by: Chen Gang <gang.chen@asianux.com>
>>>> ---
>>>> arch/powerpc/include/asm/kvm_asm.h | 2 +-
>>>> arch/powerpc/kernel/exceptions-64s.S | 6 +++---
>>>> 2 files changed, 4 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/arch/powerpc/include/asm/kvm_asm.h b/arch/powerpc/include/asm/kvm_asm.h
>>>> index b9dd382..2c65bae 100644
>>>> --- a/arch/powerpc/include/asm/kvm_asm.h
>>>> +++ b/arch/powerpc/include/asm/kvm_asm.h
>>>> @@ -86,7 +86,7 @@
>>>> #define BOOK3S_INTERRUPT_PROGRAM 0x700
>>>> #define BOOK3S_INTERRUPT_FP_UNAVAIL 0x800
>>>> #define BOOK3S_INTERRUPT_DECREMENTER 0x900
>>>> -#define BOOK3S_INTERRUPT_HV_DECREMENTER 0x980
>>>> +#define BOOK3S_INTERRUPT_HV_DECREMENTER 0x988
>> This is hardwird in the architecture.. you can't just move it
>>
>

I think of a way to solve it: we just move the related code to another
area, after enter the original entry (e.g. 0x900), we let it jump to
that area to excuse the related code.

:-)

> OK, thank you, I need continue to fix it. It seems we have to read the
> details to shrink one instruction (4 bytes), at least.
>
> Welcome additional suggestions or completions.
>
> Thanks.
>


--
Chen Gang

Asianux Corporation
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