[Android] libopenxr_loader.so Support 16 KB page size

[jsyjbaba]

[Android] libopenxr_loader.so Support 16 KB page size
modified: src/loader/CMakeLists.txt

Beginning with Android 15, AOSP supports devices that are configured to use a page size of 16 KB (16 KB devices).
https://android-developers.googleblog.com/2025/05/prepare-play-apps-for-devices-with-16kb-page-size.html

issue: #546

[CLAassistant]

All committers have signed the CLA.

[rpavlik]

So this appears to apply on all Android architectures. I thought this was just an ARM thing, but the linked blog post doesn't actually say that. Should this be applied on all architectures?

[jsyjbaba]

As you know, Android devices—excluding emulators—use ARM architectures.
Also, this code is safely supported across other ABIs without issues.
Both Epic and the Vulkan validation layers configure this setting based on the Android platform.

Vulkan Validation Layers commit

Epic Games Unreal Engine commit

[rpavlik]

there are x64 devices (magic leap 2) and emulators (android xr emulator) in the wild, so I try to care about all the architectures. thanks for the references.

[Wallbraker]

Reading the various Android pages that touches on the 16KB pages thing it doesn't seem like 16KB pages breaks on x86_64?

[utzcoz]

https://developer.android.com/guide/practices/page-sizes#linux-or-macos_1

Google APIs Experimental 16 KB Page Size Intel x86_64 Atom System Image

Looks like Google has prepared 16kb image for x86_64. What my thought after reading it is: 16kb is supported by x86_64 Android.

[rpavlik]

Thank you for this!