Userptr broken with the latest amdgpu driver

[Yang, Philip]

Hi Marek,

I guess you are using old kernel config with 5.x kernel, and the kernel 
config option CONFIG_HMM is missing because the dependency option 
CONFIG_ZONE_DEVICE is missing in old config file. Please update your 
kernel config file to enable option CONFIG_ZONE_DEVICE.

You should have this message in dmesg log:

"HMM_MIRROR kernel config option is not enabled, "
"add CONFIG_ZONE_DEVICE=y in config file to fix

Philip


On 2019-04-08 4:46 p.m., Marek Olšák wrote:
> Hi,
> 
> amdgpu_mn_register fails with -ENODEV in amdgpu_gem_userptr_ioctl.
> 
> The regression happened within the last 1-2 months.
> 
> Marek
> 
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