thanks.
i saw the note and was wondering if for xen3 it could be
stubbed out.
>> i had to make the following changes to the kernel for xen3 to match up
>> to recent labs pc kernel and to compile successfully. can anyone
>> verify the changes are correct? (i could to a smoke test on EC2, but
>> don't feel adventurous at the moment)
>
> The evenaddr function in trap.c should be replaced by validalign:
>
> void
> validalign(uintptr addr, unsigned align)
> {
> /*
> * Plan 9 is a 32-bit O/S, and the hardware it runs on
> * does not usually have instructions which move 64-bit
> * quantities directly, synthesizing the operations
> * with 32-bit move instructions. Therefore, the compiler
> * (and hardware) usually only enforce 32-bit alignment,
> * if at all.
> *
> * Take this out if the architecture warrants it.
> */
> if(align == sizeof(vlong))
> align = sizeof(long);
>
> /*
> * Check align is a power of 2, then addr alignment.
> */
> if((align != 0 && !(align & (align-1))) && !(addr & (align-1)))
> return;
> postnote(up, 1, "sys: odd address", NDebug);
> error(Ebadarg);
> /*NOTREACHED*/
> }
>
> This is a change done by Jim McKie on 2014-05-15.
>
> --
> David du Colombier
