linux-kernel - [PATCH 06/11] arm64: init SCTLR2_EL1 at cpu_soft

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Message-Id: <20250804121724.3681531-7-yeoreum.yun@arm.com>
Date: Mon,  4 Aug 2025 13:17:19 +0100
From: Yeoreum Yun <yeoreum.yun@....com>
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	Yeoreum Yun <yeoreum.yun@....com>
Subject: [PATCH 06/11] arm64: init SCTLR2_EL1 at cpu_soft_restart()

Initailize SCTLR2_EL1 at cpu_soft_restart().

Signed-off-by: Yeoreum Yun <yeoreum.yun@....com>
---
 arch/arm64/kernel/cpu-reset.S | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S
index c87445dde674..123564af345b 100644
--- a/arch/arm64/kernel/cpu-reset.S
+++ b/arch/arm64/kernel/cpu-reset.S
@@ -37,6 +37,12 @@ SYM_TYPED_FUNC_START(cpu_soft_restart)
 	 * regime if HCR_EL2.E2H == 1
 	 */
 	msr	sctlr_el1, x12
+
+alternative_if ARM64_HAS_SCTLR2
+	mov_q	x12, INIT_SCTLR2_EL1
+	msr_s	SYS_SCTLR2_EL1, x12
+alternative_else_nop_endif
+
 	isb

 	cbz	x0, 1f				// el2_switch?
--
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}