From 79224797fb36d5823b04cc266c08db5089246d2d Mon Sep 17 00:00:00 2001
From: James Barford-Evans <james.barford-evans@arm.com>
Date: Tue, 2 Dec 2025 15:36:21 +0000
Subject: [PATCH] Regression tests for system register `ttbr0_el2`

---
 tests/ui/asm/aarch64/ttbr0_el2.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 tests/ui/asm/aarch64/ttbr0_el2.rs

diff --git a/tests/ui/asm/aarch64/ttbr0_el2.rs b/tests/ui/asm/aarch64/ttbr0_el2.rs
new file mode 100644
index 0000000000000..a283d75c8fffd
--- /dev/null
+++ b/tests/ui/asm/aarch64/ttbr0_el2.rs
@@ -0,0 +1,11 @@
+//! Regression test for #97724, recognising ttbr0_el2 as a valid armv8 system register
+//@ only-aarch64
+//@ build-pass
+use std::arch::asm;
+
+static PT: [u64; 512] = [0; 512];
+fn main() {
+    unsafe {
+        asm!("msr ttbr0_el2, {pt}", pt = in(reg) &PT as *const _ );
+    }
+}