Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755789Ab3DYJbc (ORCPT ); Thu, 25 Apr 2013 05:31:32 -0400 Received: from intranet.asianux.com ([58.214.24.6]:1707 "EHLO intranet.asianux.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752093Ab3DYJbb (ORCPT ); Thu, 25 Apr 2013 05:31:31 -0400 X-Spam-Score: -100.8 Message-ID: <5178F7C3.6070700@asianux.com> Date: Thu, 25 Apr 2013 17:30:43 +0800 From: Chen Gang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Michael Neuling CC: Mike Qiu , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, sfr@canb.auug.org.au, matt@ozlabs.org, linux-kernel@vger.kernel.org, paulus@samba.org, "Aneesh Kumar K.V" Subject: Re: [PATCH] PowerPC: kernel: compiling issue, make additional room in exception vector area References: <5177965D.9090406@linux.vnet.ibm.com> <20130424083142.GB26834@concordia> <51779941.8080403@linux.vnet.ibm.com> <30651.1366799858@ale.ozlabs.ibm.com> <1366807638.5911.2.camel@localhost> <5178816D.3000309@asianux.com> <5178ABA2.4030109@linux.vnet.ibm.com> <5178E6C3.4060603@asianux.com> <1659.1366880440@ale.ozlabs.ibm.com> <5178F1BC.6050905@asianux.com> In-Reply-To: <5178F1BC.6050905@asianux.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1558 Lines: 47 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 >>>> --- >>>> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/