Hey, everyone. I've run into problems starting up my Xen domUs as of
the latest batch of stable updates. Whenever I try to create one, I
get a bunch of block device errors like this:
libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to
add device with path /local/domain
00 00 00 00 c1 00 00 00 00 00 00 00 80 e1 d2 03 00 00
This commit renames drm_get_max_iomem() to drm_need_swiotlb(), adds a
xen_pv_domain() check to it, and moves the bit shifting comparison that
always follows its usage into the function (simplifying the drm driver
code).
Signed-off-by: Mic
This commit fixes DRM failures on Xen PV systems that were introduced in
v4.17 by the following commits:
82626363 drm: add func to get max iomem address v2
fd5fd480 drm/amdgpu: only enable swiotlb alloc when need v2
1bc3d3cc drm/radeon: only enable swiotlb path when need v2
The introduction of ->
