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Date: Fri, 26 Apr 2013 10:06:23 +0800 From: Chen Gang <gang.chen@...anux.com> To: Mike Qiu <qiudayu@...ux.vnet.ibm.com> CC: Michael Neuling <mikey@...ling.org>, Paul Mackerras <paulus@...ba.org>, Michael Ellerman <michael@...erman.id.au>, linuxppc-dev@...ts.ozlabs.org, sfr@...b.auug.org.au, matt@...abs.org, linux-kernel@...r.kernel.org, "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com> Subject: Re: [PATCH v2] PowerPC: kernel: compiling issue, make additional room in exception vector area On 2013年04月26日 10:03, Mike Qiu wrote: > �� 2013/4/26 9:36, Chen Gang д��: >> > On 2013��04��26�� 09:18, Chen Gang wrote: >>> >> On 2013��04��26�� 09:06, Chen Gang wrote: >>>>> >>>> CFAR is the Come From Register. It saves the location of the last >>>>>> >>>>> branch and is hence overwritten by any branch. >>>>>> >>>>> >>>> >>> Do we process it just like others done (e.g. 0x300, 0xe00, 0xe20 ...) ? >>>> >>> . = 0x900 >>>> >>> .globl decrementer_pSeries >>>> >>> decrementer_pSeries: >>>> >>> HMT_MEDIUM_PPR_DISCARD >>>> >>> SET_SCRATCH0(r13) >>>> >>> b decrementer_pSeries_0 >>>> >>> >>>> >>> ... >>>> >>> >>>> >>> >> > Oh, it seems EXCEPTION_PROLOG_1 will save the regesters which related >> > with CFAR, so I think need move EXCEPTION_PROLOG_1 to near 0x900. > I will try your diff V2, to see if the machine can boot up OK, thanks. (hope it can work) :-) -- Chen Gang Asianux Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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