linux-kernel - Re: [PATCH] PowerPC: kernel: compiling issue, make additional room in exception vector area

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Message-ID: <5178F1BC.6050905@asianux.com>
Date:	Thu, 25 Apr 2013 17:05:00 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Michael Neuling <mikey@...ling.org>
CC:	Mike Qiu <qiudayu@...ux.vnet.ibm.com>,
	Michael Ellerman <michael@...erman.id.au>,
	linuxppc-dev@...ts.ozlabs.org, sfr@...b.auug.org.au,
	matt@...abs.org, linux-kernel@...r.kernel.org, paulus@...ba.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: [PATCH] PowerPC: kernel: compiling issue, make additional room
 in exception vector area

On 2013年04月25日 17:00, Michael Neuling wrote:
>> > 
>> > Signed-off-by: Chen Gang <gang.chen@...anux.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
> 

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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