On 06/11, Rob Herring wrote:
> On Tue, Jun 11, 2013 at 8:30 PM, Stephen Boyd <sboyd@xxxxxxxxxxxxxx> wrote:
>
> > diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
> > index e0d8565..04fe160 100644
> > --- a/arch/arm/mm/mmu.c
> > +++ b/arch/arm/mm/mmu.c
> > @@ -938,8 +938,12 @@ static void __init pci_reserve_io(void)
> > #ifdef CONFIG_DEBUG_LL
> > void __init debug_ll_io_init(void)
> > {
> > + struct vm_struct *vm;
> > + struct static_vm *svm;
> > struct map_desc map;
> >
> > + svm = early_alloc_aligned(sizeof(*svm), __alignof__(*svm));
> > +
> > debug_ll_addr(&map.pfn, &map.virtual);
> > if (!map.pfn || !map.virtual)
> > return;
> > @@ -948,6 +952,15 @@ void __init debug_ll_io_init(void)
> > map.length = PAGE_SIZE;
> > map.type = MT_DEVICE;
> > create_mapping(&map);
> > +
> > + vm = &svm->vm;
> > + vm->addr = (void *)map.virtual;
> > + vm->size = map.length;
> > + vm->phys_addr = __pfn_to_phys(map.pfn);
> > + vm->flags = VM_IOREMAP | VM_ARM_STATIC_MAPPING;
> > + vm->flags |= VM_ARM_MTYPE(map.type);
> > + vm->caller = debug_ll_io_init;
> > + add_static_vm_early(svm);
>
> Can you use vm_reserve_area_early here or perhaps just call
> iotable_init instead of create_mapping directly? I don't recall if
> there was some reason I didn't do that.
>
I had iotable_init() before but I thought it was better to have
the ->caller argument say debug_ll_io_init() instead of
iotable_init(). Shall I extract out the similar code?
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