On Tue, 2017-09-12 at 15:43 +0530, Aneesh Kumar K.V wrote:
> Yes. I added the limit to radix after I observed that we have MSR[SF] =
> 0.
>
> IIRC it was PACA access that was causing it to crash on return from RTAS.
>
> hmm the commit also explains that.
>
> powerpc/mm/radix: Limit paca
Benjamin Herrenschmidt writes:
> On Mon, 2017-08-14 at 22:49 +1000, Michael Ellerman wrote:
>> > - /*
>> > - * We limit the allocation that depend on ppc64_rma_size
>> > - * to first_memblock_size. We also clamp it to 1GB to
>> > - * avoid some funky things
On Tue, 15 Aug 2017 22:48:22 +1000
Benjamin Herrenschmidt wrote:
> On Tue, 2017-08-15 at 22:10 +1000, Nicholas Piggin wrote:
> > On Mon, 14 Aug 2017 23:13:07 +1000
> > Benjamin Herrenschmidt wrote:
> >
> > > On Mon, 2017-08-14 at 22:49 +1000, Michael
On Tue, 2017-08-15 at 22:10 +1000, Nicholas Piggin wrote:
> On Mon, 14 Aug 2017 23:13:07 +1000
> Benjamin Herrenschmidt wrote:
>
> > On Mon, 2017-08-14 at 22:49 +1000, Michael Ellerman wrote:
> > > > - /*
> > > > - * We limit the allocation that depend on
On Mon, 14 Aug 2017 23:13:07 +1000
Benjamin Herrenschmidt wrote:
> On Mon, 2017-08-14 at 22:49 +1000, Michael Ellerman wrote:
> > > - /*
> > > - * We limit the allocation that depend on ppc64_rma_size
> > > - * to first_memblock_size. We also clamp it to 1GB to
>
On Mon, 14 Aug 2017 23:10:50 +1000
Benjamin Herrenschmidt wrote:
> On Mon, 2017-08-14 at 22:49 +1000, Michael Ellerman wrote:
> > Nicholas Piggin writes:
> >
> > > This removes the RMA limit on powernv platform, which constrains
> > > early allocations
On Mon, 2017-08-14 at 22:49 +1000, Michael Ellerman wrote:
> > - /*
> > - * We limit the allocation that depend on ppc64_rma_size
> > - * to first_memblock_size. We also clamp it to 1GB to
> > - * avoid some funky things such as RTAS bugs.
>
> That comment about RTAS is 7 years
On Mon, 2017-08-14 at 22:49 +1000, Michael Ellerman wrote:
> Nicholas Piggin writes:
>
> > This removes the RMA limit on powernv platform, which constrains
> > early allocations such as PACAs and stacks. There are still other
> > restrictions that must be followed, such as
Nicholas Piggin writes:
> This removes the RMA limit on powernv platform, which constrains
> early allocations such as PACAs and stacks. There are still other
> restrictions that must be followed, such as bolted SLB limits, but
> real mode addressing has no constraints.
>
>