On 22/10/2019 13:23, Nicolas Saenz Julienne wrote:
> On Mon, 2019-10-21 at 16:36 -0400, Qian Cai wrote:
>> I managed to get more information here,
>>
>> [0.00] cma: dma_contiguous_reserve(limit c000)
>> [0.00] cma: dma_contiguous_reserve: reserving 64 MiB for global area
>> [
On Mon, 2019-10-21 at 16:36 -0400, Qian Cai wrote:
> I managed to get more information here,
>
> [0.00] cma: dma_contiguous_reserve(limit c000)
> [0.00] cma: dma_contiguous_reserve: reserving 64 MiB for global area
> [0.00] cma: cma_declare_contiguous(size 0x040
> On Oct 21, 2019, at 1:55 PM, Nicolas Saenz Julienne
> wrote:
>
> On Mon, 2019-10-21 at 13:25 -0400, Qian Cai wrote:
>>> On Oct 21, 2019, at 1:01 PM, Nicolas Saenz Julienne
>>> wrote:
>>>
>>> Could you enable CMA debugging to see if anything interesting comes out of
>>> it.
>>
>> I did bu
On Mon, 2019-10-21 at 13:25 -0400, Qian Cai wrote:
> > On Oct 21, 2019, at 1:01 PM, Nicolas Saenz Julienne
> > wrote:
> >
> > Could you enable CMA debugging to see if anything interesting comes out of
> > it.
>
> I did but nothing interesting came out. Did you use the same config I gave?
Yes, a
> On Oct 21, 2019, at 1:01 PM, Nicolas Saenz Julienne
> wrote:
>
> Could you enable CMA debugging to see if anything interesting comes out of it.
I did but nothing interesting came out. Did you use the same config I gave?
Also, it has those cmdline.
page_poison=on page_owner=on numa_balanc
On Mon, 2019-10-21 at 10:46 -0400, Qian Cai wrote:
> > On Oct 21, 2019, at 10:34 AM, Nicolas Saenz Julienne > > wrote:
> >
> > On Mon, 2019-10-21 at 10:15 -0400, Qian Cai wrote:
> > > > On Sep 11, 2019, at 2:25 PM, Nicolas Saenz Julienne <
> > > > nsaenzjulie...@suse.de>
> > > > wrote:
> > > >
>
> On Oct 21, 2019, at 10:34 AM, Nicolas Saenz Julienne
> wrote:
>
> On Mon, 2019-10-21 at 10:15 -0400, Qian Cai wrote:
>>> On Sep 11, 2019, at 2:25 PM, Nicolas Saenz Julienne
>>> wrote:
>>>
>>> So far all arm64 devices have supported 32 bit DMA masks for their
>>> peripherals. This is not t
On Mon, 2019-10-21 at 10:15 -0400, Qian Cai wrote:
> > On Sep 11, 2019, at 2:25 PM, Nicolas Saenz Julienne
> > wrote:
> >
> > So far all arm64 devices have supported 32 bit DMA masks for their
> > peripherals. This is not true anymore for the Raspberry Pi 4 as most of
> > it's peripherals can onl
> On Sep 11, 2019, at 2:25 PM, Nicolas Saenz Julienne
> wrote:
>
> So far all arm64 devices have supported 32 bit DMA masks for their
> peripherals. This is not true anymore for the Raspberry Pi 4 as most of
> it's peripherals can only address the first GB of memory on a total of
> up to 4 GB
So far all arm64 devices have supported 32 bit DMA masks for their
peripherals. This is not true anymore for the Raspberry Pi 4 as most of
it's peripherals can only address the first GB of memory on a total of
up to 4 GB.
This goes against ZONE_DMA32's intent, as it's expected for ZONE_DMA32
to be
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