Quoting Benjamin Herrenschmidt (benh@xxxxxxxxxxxxxxxxxxx):
>
> > +struct cr_hdr_cpu {
> > + struct pt_regs pt_regs;
> > + /* relevant fields from thread_struct */
> > + double fpr[32][TS_FPRWIDTH];
> > + unsigned int fpscr;
> > + int fpexc_mode;
> > + /* unsigned int align_ctl; this is never updated? */
> > + unsigned long dabr;
> > +};
>
> Is there some version or other identification somewhere ? If not there
> should be. ie, we're going to add things here. For example, what about
> the vector registers ? Also, some CPUs will have more HW debug registers
> than just the DABR (we plan to add support for all the BookE architected
> IACs and DACs for example), etc...
The arch-independent checkpoint header does have kernel
maj:min:rev:patch info. We expect to have to do more,
assuming that the .config can change the arch-dependent
cpu header (i.e. perhaps TS_FPRWIDTH could be changed).
-serge
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