arm64: Initialize sctrl_el1 when running fork

Signed-off-by: wangmingrong1 <[email protected]>
apache · Feb 18, 2025 · 3742be9 · 3742be9
1 parent 0ae633c
commit 3742be9
Showing 1 changed file with 5 additions and 0 deletions.
diff --git 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