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CA-193817: Allow GVT-g even when device is hidden from xen/dom0 #2540

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johnelse merged 1 commit into from
Dec 17, 2015
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CA-193817: Allow GVT-g even when device is hidden from xen/dom0 #2540

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CA-193817: Allow GVT-g even when device is hidden from xen/dom0 
GVT-g is now always enabled, independent of whether the device is hidden
from xen/dom0.

Passthrough of Intel GPUs still requires the device to be hidden from
both xen and dom0.

Signed-off-by: John Else <[email protected]>
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@johnelse
johnelse committed Dec 16, 2015
commit 3c65fa0218718a7b1d3699134ae354754beec38c
19 changes: 7 additions & 12 deletions ocaml/xapi/xapi_vgpu_type.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -486,18 +486,13 @@ module Intel = struct
~is_host_display_enabled
~is_pci_hidden =
let types =
if is_system_display_device
then begin
match is_host_display_enabled, is_pci_hidden with
| false, true -> [passthrough_gpu]
| true, true -> []
| _, false ->
(make_vgpu_types ~__context
~pci ~whitelist:!Xapi_globs.gvt_g_whitelist)
end else
passthrough_gpu ::
(make_vgpu_types ~__context
~pci ~whitelist:!Xapi_globs.gvt_g_whitelist)
let passthrough_types =
if is_system_display_device && (is_host_display_enabled || not is_pci_hidden)
then []
else [passthrough_gpu]
in
passthrough_types @
(make_vgpu_types ~__context ~pci ~whitelist:!Xapi_globs.gvt_g_whitelist)
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@simonjbeaumont simonjbeaumont Dec 15, 2015

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The match statement means I have to keep track of what's what. Given they're all boolean values wouldn't it be jsut as clean to use if statements?

let passthrough_types = 
  if not is_system_display_device || not is_host_display_enabled && is_pci_hidden
  then [passthrough_gpu]
  else [] in
...

The match case with false, _, _ and then true, [other stuff] are collapsed.

in
List.map (find_or_create ~__context) types
end
Expand Down