On Mon, Jan 13, 2025 at 05:12:01PM +0530, Tejas Upadhyay wrote:
Next time, please identify the patch with 'drm/xe/uapi' to get
it more visible to maintainers.
> In order to avoid having userspace to use MI_MEM_FENCE,
> we are adding a mechanism for userspace to generate a
> PCI memory barrier wit
In order to avoid having userspace to use MI_MEM_FENCE,
we are adding a mechanism for userspace to generate a
PCI memory barrier with low overhead (avoiding IOCTL call
as well as writing to VRAM will adds some overhead).
This is implemented by memory-mapping a page as uncached
that is backed by MM
