Messages in this thread | | | Date | Wed, 27 Jun 2001 22:19:37 +0200 (MET DST) | From | Mikael Pettersson <> | Subject | Re: PROBLEM:Illegal instruction when mount nfs file systems using cyr ixIII |
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On Wed, 27 Jun 2001 17:42:01 +0800, Frank Zhu wrote:
>I use a PIII machine as the server and cyrixIII machine as the client.The >kernel is 2.4.5.The distribute is red hat 7.1 >when i mount the nfs file system at the client it failed.The core file is >created.using the gdb it report : >Program terminated with signal 4(SIGILL),Illegal instruction >#0 0x40003e28 in ??() > >If i change the cpu (CyrixIII) to PIII all is ok.
You don't say exactly where the failure occurs, but I suspect that you're feeding i686-class machine code to your VIA Cyrix III.
The problem is that VIA Cyrix III announces itself (via CPUID) as a "family 6" processor, i.e. i686 compatible. This is not completely accurate, since it doesn't implement the conditional move instruction. [Yeah, I know there's a CPUID feature flag for CMOV. I also know gcc doesn't check it, and I suspect glibc doesn't either.]
To make the machine work you'll have to ensure that the kernel, user-space libraries and programs, and NFS-imported programs all are compiled for a lesser CPU than i686.
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