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Message-Id: <20250804121724.3681531-3-yeoreum.yun@arm.com>
Date: Mon, 4 Aug 2025 13:17:15 +0100
From: Yeoreum Yun <yeoreum.yun@....com>
To: catalin.marinas@....com,
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Cc: linux-arm-kernel@...ts.infradead.org,
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Yeoreum Yun <yeoreum.yun@....com>
Subject: [PATCH 02/11] arm64: make SCTLR2_EL1 accessible
make SCTLR2_EL1 accssible to initilise it.
Signed-off-by: Yeoreum Yun <yeoreum.yun@....com>
---
arch/arm64/include/asm/el2_setup.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el2_setup.h
index 9f38340d24c2..33b59601e8c2 100644
--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -57,9 +57,15 @@
/* Enable GCS if supported */
mrs_s x1, SYS_ID_AA64PFR1_EL1
ubfx x1, x1, #ID_AA64PFR1_EL1_GCS_SHIFT, #4
- cbz x1, .Lset_hcrx_\@
+ cbz x1, .Lskip_hcrx_GCSEn_\@
orr x0, x0, #HCRX_EL2_GCSEn
+.Lskip_hcrx_GCSEn_\@:
+ mrs_s x1, SYS_ID_AA64MMFR3_EL1
+ ubfx x1, x1, #ID_AA64MMFR3_EL1_SCTLRX_SHIFT, #4
+ cbz x1, .Lset_hcrx_\@
+ orr x0, x0, HCRX_EL2_SCTLR2En
+
.Lset_hcrx_\@:
msr_s SYS_HCRX_EL2, x0
.Lskip_hcrx_\@:
--
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}
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