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new e28c0b4ef1 arm64: Initialize sctrl_el1 when running fork
e28c0b4ef1 is described below
commit e28c0b4ef17eea9ad2e093ecdb06894a5ae7f03c
Author: wangmingrong1 <wangmingro...@xiaomi.com>
AuthorDate: Tue Feb 18 11:18:43 2025 +0800
arm64: Initialize sctrl_el1 when running fork
Signed-off-by: wangmingrong1 <wangmingro...@xiaomi.com>
---
arch/arm64/src/common/arm64_fork.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/src/common/arm64_fork.c
b/arch/arm64/src/common/arm64_fork.c
index bc91bcc5f5..9cd23b5554 100644
--- a/arch/arm64/src/common/arm64_fork.c
+++ b/arch/arm64/src/common/arm64_fork.c
@@ -225,6 +225,11 @@ pid_t arm64_fork(const struct fork_s *context)
child->cmn.xcp.regs[REG_ELR] = (uint64_t)context->lr;
+ child->cmn.xcp.regs[REG_SCTLR_EL1] = read_sysreg(sctlr_el1);
+#ifdef CONFIG_ARM64_MTE
+ child->cmn.xcp.regs[REG_SCTLR_EL1] |= SCTLR_TCF1_BIT;
+#endif
+
child->cmn.xcp.regs[REG_EXE_DEPTH] = 0;
child->cmn.xcp.regs[REG_SP_ELX] = newsp - XCPTCONTEXT_SIZE;
#ifdef CONFIG_ARCH_KERNEL_STACK
