[RFC PATCH 14/36] arm64: interrupts: introduce generic interrupt masking helpers

[Vladimir Murzin]

On 7/13/26 09:43, Jinjie Ruan wrote:
>> diff --git a/arch/arm64/include/asm/interrupts/masking.h b/arch/arm64/include/asm/interrupts/masking.h
>> new file mode 100644
>> index 000000000000..66ee03f7ab68
>> --- /dev/null
>> +++ b/arch/arm64/include/asm/interrupts/masking.h
>> @@ -0,0 +1,101 @@
>> +/* SPDX-License-Identifier: GPL-2.0-only */
>> +/*
>> + * Copyright (C) 2025 Arm Ltd.
>> + */
>> +#ifndef __ASM_INTERRUPTS_MASKING_H
>> +#define __ASM_INTERRUPTS_MASKING_H
>> +
>> +#include <asm/arch_gicv3.h>
>> +#include <asm/bug.h>
>> +#include <asm/cpufeature.h>
>> +#include <asm/interrupts/common_flags.h>
>> +#include <asm/ptrace.h>
>> +
>> +typedef struct arm64_exc_hwstates {
>> +	arm64_exc_hwstate_t saved;
>> +	arm64_exc_hwstate_t expected;
>> +} arm64_exc_hwstates_t;
>> +
>> +#ifdef CONFIG_DEBUG_IRQFLAGS
>> +/* Make sure the CPU init/tear down masking functions are only used once. */
>> +static DEFINE_PER_CPU(bool, irqs_masks_cpu_init_done);
>> +static DEFINE_PER_CPU(bool, irqs_masks_cpu_final_done);
>> +#endif
>> +
>> +static inline
>> +arm64_exc_hwstates_t local_all_irqs_save_mask(arm64_exc_context_t new)
> I think the name "all irqs" is inappropriate, because it also masks
> DEBUG exceptions and SERROR exceptions, which are not irqs.
> 
> Maybe local_exceptions_save_mask()?

Make sense. I'll fix that in next iteration.

Cheers
Vladimir