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Xen decoding instruction 0xad400420 is not supported

To: Xianzhong Li <xianzhong.li@xxxxxxx>, Peng Fan <peng.fan@xxxxxxx>

From: Wujian Sun <wujian.sun_1@xxxxxxx>

Date: Mon, 2 Nov 2026 01:43:07 +0000

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Thread-topic: Xen decoding instruction 0xad400420 is not supported

Hi everyone,

I am trying to enable virgl native drm context feature on GPU Mali G310 with mesa panther driver.

https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/1694

https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/45055/commits

I tried both xen 4.21 and 4.22, but both met the below issue. Does anyone have any suggestion about the issue?

(XEN) d1v0 Decoding instruction 0xad400420 is not supported

(XEN) d1v0 unhandled Arm instruction 0xad400420

(XEN) d1v0 Unable to decode instruction

Best Regards

Wujian

NXP Confidential