From: Huacai Chen <chenhuacai@loongson.cn>
Date: Thu, 15 Jan 2026 10:50:48 +0000 (+0800)
Subject: LoongArch: Remove redundant code in head.S
X-Git-Tag: v6.19-rc6~16^2~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d26ca8ec461c01f682402f73a89643f4fefbbb3;p=thirdparty%2Flinux.git

LoongArch: Remove redundant code in head.S

SETUP_MODES already setup the initial values of CSR.CRMD, CSR.PRMD and
CSR.EUEN, so the redundant open code can be removed.

Fixes: 7b2afeafaf9c2d5 ("LoongArch: Adjust boot & setup for 32BIT/64BIT")
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---

diff --git a/arch/loongarch/kernel/head.S b/arch/loongarch/kernel/head.S
index 7f288e89573b..4eed7bc312a8 100644
--- a/arch/loongarch/kernel/head.S
+++ b/arch/loongarch/kernel/head.S
@@ -126,14 +126,6 @@ SYM_CODE_START(smpboot_entry)
 	LONG_LI		t1, CSR_STFILL
 	csrxchg		t0, t1, LOONGARCH_CSR_IMPCTL1
 #endif
-	/* Enable PG */
-	li.w		t0, 0xb0		# PLV=0, IE=0, PG=1
-	csrwr		t0, LOONGARCH_CSR_CRMD
-	li.w		t0, 0x04		# PLV=0, PIE=1, PWE=0
-	csrwr		t0, LOONGARCH_CSR_PRMD
-	li.w		t0, 0x00		# FPE=0, SXE=0, ASXE=0, BTE=0
-	csrwr		t0, LOONGARCH_CSR_EUEN
-
 	la.pcrel	t0, cpuboot_data
 	ld.d		sp, t0, CPU_BOOT_STACK
 	ld.d		tp, t0, CPU_BOOT_TINFO