Re: [Qemu-ppc] [TRIVIAL][RFC][PATCH] FU exceptions should carry a cause (IC)

[David Gibson]

On Thu, Nov 10, 2016 at 01:06:17PM +1100, David Gibson wrote:
> On Thu, Nov 10, 2016 at 12:42:37PM +1100, Balbir Singh wrote:
> > 
> > 
> > As per the ISA we need a cause for FU exceptions.Executing a tabort r9
> > for example in libc, causes a EXCP_FU exception. We don't wire up the
> > IC (cause) when we post the exception. The cause is required
> > for the kernel to do the right thing. I caught this issue while testing
> > the latest kernel against Cedrics' latest pnv ipmi branch.
> > 
> > Signed-off-by: Balbir singh <address@hidden>
> 
> Applied to ppc-for-2.8

Or not..

This causes compile breakage for the ppc32 targets.

> 
> > ---
> >  target-ppc/excp_helper.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/target-ppc/excp_helper.c b/target-ppc/excp_helper.c
> > index 808760b..cccea8d 100644
> > --- a/target-ppc/excp_helper.c
> > +++ b/target-ppc/excp_helper.c
> > @@ -427,6 +427,7 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int 
> > excp_model, int excp)
> >      case POWERPC_EXCP_VPU:       /* Vector unavailable exception           
> >   */
> >      case POWERPC_EXCP_VSXU:       /* VSX unavailable exception             
> >   */
> >      case POWERPC_EXCP_FU:         /* Facility unavailable exception        
> >   */
> > +        env->spr[SPR_FSCR] |= ((target_ulong)env->error_code << 56);
> >          break;
> >      case POWERPC_EXCP_PIT:       /* Programmable interval timer interrupt  
> >   */
> >          LOG_EXCP("PIT exception\n");
> 



-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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