firmware: arm_sdei: Prohibit probing in '_sdei_handler' (2f1d4e24) · Commits · 戴 / test

Functions called in '_sdei_handler' are needed to be marked as 'nokprobe'. Because these functions are called in NMI context and neither the arch-code's debug infrastructure nor kprobes core supports this. Signed-off-by:

Xiongfeng Wang <wangxiongfeng2@huawei.com> Reviewed-by:

James Morse <james.morse@arm.com> Signed-off-by:

Will Deacon <will.deacon@arm.com>

drivers/firmware/arm_sdei.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -165,6 +165,7 @@ static int invoke_sdei_fn(unsigned long function_id, unsigned long arg0,

		return err;
		}
		NOKPROBE_SYMBOL(invoke_sdei_fn);

		static struct sdei_event *sdei_event_find(u32 event_num)
		{
		@@ -879,6 +880,7 @@ static void sdei_smccc_smc(unsigned long function_id,
		{
		arm_smccc_smc(function_id, arg0, arg1, arg2, arg3, arg4, 0, 0, res);
		}
		NOKPROBE_SYMBOL(sdei_smccc_smc);

		static void sdei_smccc_hvc(unsigned long function_id,
		unsigned long arg0, unsigned long arg1,
		@@ -887,6 +889,7 @@ static void sdei_smccc_hvc(unsigned long function_id,
		{
		arm_smccc_hvc(function_id, arg0, arg1, arg2, arg3, arg4, 0, 0, res);
		}
		NOKPROBE_SYMBOL(sdei_smccc_hvc);

		int sdei_register_ghes(struct ghes ghes, sdei_event_callback normal_cb,
		sdei_event_callback *critical_cb)

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