I think we have to wait to Roland’s test results with his SCSI PCI card.

Christian

Sent from my iPhone

On 4. Dec 2019, at 09:56, Christoph Hellwig [off-list ref] wrote:

quoted

On Wed, Nov 27, 2019 at 08:56:25AM +0200, Mike Rapoport wrote:

quoted

On Tue, Nov 26, 2019 at 05:40:26PM +0100, Christoph Hellwig wrote:

quoted

On Tue, Nov 26, 2019 at 12:26:38PM +0100, Christian Zigotzky wrote:
Hello Christoph,

The PCI TV card works with your patch! I was able to patch your Git kernel 
with the patch above.

I haven't found any error messages in the dmesg yet.

Thanks.  Unfortunately this is a bit of a hack as we need to set
the mask based on runtime information like the magic FSL PCIe window.
Let me try to draft something better up, and thanks already for testing
this one!

Maybe we'll simply force bottom up allocation before calling
swiotlb_init()? Anyway, it's the last memblock allocation.

So I think we should go with this fix (plus a source code comment) for
now.  Revamping the whole memory initialization is going to take a
while, and this fix also is easily backportable.