Re: [PATCH] arm64: Enable PCI write-combine resources under sysfs

Leon Romanovsky
2020-09-16T19:56:15Z

On Wed, Sep 16, 2020 at 05:59:24PM +1000, Benjamin Herrenschmidt wrote:
> On Tue, 2020-09-15 at 20:40 -0300, Jason Gunthorpe wrote:
>
> > Like I said, the case where the driver can't self test probably
> > doesn't intersect with the ARM implementations that can't do write
> > combining, and if it did, the users probably run the out of tree
> > driver that has the hacky stuff to make it use DEVICE_GRE.
>
> Ok. So you are saying to go for it and ignore that Mellanox case then ?
> :-)

Regarding Mellanox, as I wrote it in the beginning of this thread, you
can ignore mlx5 driver.
https://lore.kernel.org/linux-pci/20200910105419.GH421756@unreal/

Thanks