From: "Yiren.Xie" 1534428646@qq.com
It is obvious a conflict between the code and the comment. And verified that with this modification it can read the DAIF status.
Signed-off-by: Yiren.Xie 1534428646@qq.com --- arch/arm64/kernel/probes/decode-insn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/probes/decode-insn.c b/arch/arm64/kernel/probes/decode-insn.c index 6438bf62e753..22383eb1c22c 100644 --- a/arch/arm64/kernel/probes/decode-insn.c +++ b/arch/arm64/kernel/probes/decode-insn.c @@ -40,7 +40,7 @@ static bool __kprobes aarch64_insn_is_steppable(u32 insn) */ if (aarch64_insn_is_mrs(insn)) return aarch64_insn_extract_system_reg(insn) - != AARCH64_INSN_SPCLREG_DAIF; + == AARCH64_INSN_SPCLREG_DAIF;
/* * The HINT instruction is steppable only if it is in whitelist