CDD: Relax VR high performance requirement related to exclusive cores.
Some device implementation have been proven to work better without
using exclusive cores but only by utilizing SCHED_FIFO properly.
Bug:34973979
Change-Id: I99358bc41d6809ac30b85d168239be7b34e95774
diff --git a/7_hardware-compatibility/7_9_virtual-reality.md b/7_hardware-compatibility/7_9_virtual-reality.md
index 1b017b2..e19dd96 100644
--- a/7_hardware-compatibility/7_9_virtual-reality.md
+++ b/7_hardware-compatibility/7_9_virtual-reality.md
@@ -20,11 +20,13 @@
* Device implementations MUST have at least 2 physical cores.
* Device implementations MUST declare android.software.vr.mode feature.
-* Device implementations MUST provide an exclusive core to the foreground application and MUST
- support the Process.getExclusiveCores API to return the numbers of the cpu cores that are
- exclusive to the top foreground application. This core MUST not allow any other userspace
- processes to run on it (except device drivers used by the application), but MAY allow some
- kernel processes to run as necessary.
+* Device implementations MAY provide an exclusive core to the foreground
+ application and MAY support the Process.getExclusiveCores API to return
+ the numbers of the cpu cores that are exclusive to the top foreground
+ application. If exclusive core is supported then the core MUST not allow
+ any other userspace processes to run on it (except device drivers used
+ by the application), but MAY allow some kernel processes to run as
+ necessary.
* Device implementations MUST support sustained performance mode.
* Device implementations MUST support OpenGL ES 3.2.
* Device implementations MUST support Vulkan Hardware Level 0 and SHOULD support
@@ -63,4 +65,4 @@
* The display MUST support a low-persistence mode with ≤5 ms persistence,persistence being
defined as the amount of time for which a pixel is emitting light.
* Device implementations MUST support Bluetooth 4.2 and Bluetooth LE Data Length Extension
- [section 7.4.3](#7_4_3_bluetooth).
\ No newline at end of file
+ [section 7.4.3](#7_4_3_bluetooth).
