RE: [Xen-users] FPU problem

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> artsd fails to start on dom0 with this message:
> 
>     ** ERROR **: file ../../../flow/gsl/gslopmaster.c: line 521
>     (master_process_flow): assertion failed: (gsl_fpu_okround 
> () == TRUE)
>     aborting...

Which version of Xen is this? I'd be very interested to know whether you
can reproduce under 2.0.6 or unstable.

Ian
 
> gsl_fpu_okround() is defined as follows:
> 
>     static inline int
>     gsl_fpu_okround (void)
>     {
>       GslFpuState cv;
> 
>       __asm__ ("fnstcw %0"
>                : "=m" (*&cv));
>       return !(cv & 0x0c00);
>     }
> 
> Doesn't this mean Xen fails to save/restore FPU status bits?
> 
> Sound driver itself is working well under Xen.
> 
> Below is output of cat /proc/cpuinfo, if it helps.
> 
>     processor       : 0
>     vendor_id       : GenuineIntel
>     cpu family      : 6
>     model           : 7
>     model name      : Pentium III (Katmai)
>     stepping        : 2
>     cpu MHz         : 501.144
>     cache size      : 512 KB
>     fdiv_bug        : no
>     hlt_bug         : yes
>     f00f_bug        : no
>     coma_bug        : no
>     fpu             : yes
>     fpu_exception   : yes
>     cpuid level     : 2
>     wp              : yes
>     flags           : fpu tsc msr pae mce cx8 apic mtrr mca 
> cmov pat pse36 mmx fxsr sse
>     bogomips        : 999.42
> 
> --
> Takeshi
> 
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> 

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