The branch main has been updated by andrew:
URL:
https://cgit.FreeBSD.org/src/commit/?id=05e834d5dae4c963f92cfb98720c358e1eb6e37e
commit 05e834d5dae4c963f92cfb98720c358e1eb6e37e
Author: Andrew Turner <and...@freebsd.org>
AuthorDate: 2025-07-30 22:07:25 +0000
Commit: Andrew Turner <and...@freebsd.org>
CommitDate: 2025-07-30 22:33:27 +0000
arm64: Use xzr directly to set HCRX_EL2
There is no need to zero another register, just use the zero register
directly.
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D51378
---
sys/arm64/arm64/locore.S | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sys/arm64/arm64/locore.S b/sys/arm64/arm64/locore.S
index 47c609fad523..f200195906ac 100644
--- a/sys/arm64/arm64/locore.S
+++ b/sys/arm64/arm64/locore.S
@@ -415,8 +415,7 @@ LENTRY(enter_kernel_el)
*/
CHECK_CPU_FEAT(x2, ID_AA64MMFR1, HCX, IMPL, 2f)
/* Extended Hypervisor Configuration */
- mov x2, xzr
- msr HCRX_EL2_REG, x2
+ msr HCRX_EL2_REG, xzr
isb
2:
