Re: [PATCH] e500: Erratum cpu a005 workaround

2011-03-15 Thread Kumar Gala
On Jan 25, 2011, at 12:02 AM, Liu Yu wrote: > This errata can occur if a single-precision floating-point, double-precision > floating-point or vector floating-point instruction on a mispredicted branch > path signals one of the floating-point data interrupts which are enabled by > the > SPEFSCR

RE: [PATCH] e500: Erratum cpu a005 workaround

2011-02-06 Thread Benjamin Herrenschmidt
> > > > This isn't the way to do this. We normally add entries in > > cputable.c an add a new cpu_feature_bit for the errata. > > > > Than above we'd do: > > > > if (cur_cpu_spec->cpu_features & CPU_FTR_E500_A005_ERRATUM) > > > > > > IMHO, a cpu erratum is not a cpu feature. > See there're

RE: [PATCH] e500: Erratum cpu a005 workaround

2011-01-25 Thread Liu Yu-B13201
> -Original Message- > From: Gala Kumar-B11780 > Sent: Tuesday, January 25, 2011 3:01 PM > To: Liu Yu-B13201 > Cc: linuxppc-dev@lists.ozlabs.org; Gala Kumar-B11780 > Subject: Re: [PATCH] e500: Erratum cpu a005 workaround > > > On Jan 25, 2011, at 12:02 AM

Re: [PATCH] e500: Erratum cpu a005 workaround

2011-01-24 Thread Kumar Gala
On Jan 25, 2011, at 12:02 AM, Liu Yu wrote: > This errata can occur if a single-precision floating-point, double-precision > floating-point or vector floating-point instruction on a mispredicted branch > path signals one of the floating-point data interrupts which are enabled by > the > SPEFSCR